Product Guides
First Aid Kit Guide: AS 2675 & Workplace Compliance
Workplace first aid kits for Australian industry: AS 2675, Safe Work Australia Code of Practice, low- and high-risk kit selection, mining, vehicle and heavy vehicle compliance.
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Lifting Hooks Guide: G80, G100 Eye, Clevis, Swivel & Self-Locking Hook Selection
Lifting hooks for Australian rigging: eye, clevis, swivel, foundry, grab and self-locking hooks. AS 3776, EN 1677, G80 vs G100 grade selection.
Read moreWire Rope Guide: Construction, Grades, Termination & Australian Standards (AS 2076, AS 2078, AS 2759)
Wire rope explained: 7×7 / 7×19 / 1×19 construction, galvanised vs G316 stainless, AS 2076 grips, thimbles, ferrules, swaging and termination for Australian industry.
Read moreMagnetic Lifter Guide: Permanent, Electro-Permanent (Magswitch) & Electromagnet Selection
A magnetic lifter — also called a lifting magnet — is a below-the-hook lifting device that grips a steel load by magnetic attraction rather than by clamping or wrapping. Hook one onto a chain block, electric hoist, jib crane or overhead crane, switch the magnet on against the load, and the magnetic field generated inside the lifter holds the steel firmly through the lift. When the load is set down, switch the magnet off and the lifter releases. No drilling, no slinging, no clamping forces on the workpiece. For Australian fabrication shops, machine shops, steelyards, and maintenance workshops handling steel plate, sheet, billet, pipe and round bar, the magnetic lifter is the fastest tool in the lifting toolbox. A 1-tonne magnetic lifter cycles a load in seconds — pick up, lift, set down, release — versus the 30+ seconds of slinging and unslinging through holes that don't exist. The trade-off is geometric and material discipline: the lifter only works on ferrous steel, only on flat surfaces, and only above a minimum plate thickness. Get any of those wrong and the load drops. This guide is the comprehensive reference for magnetic lifters in Australian industry. We cover the three types (permanent, electromagnet, electro-permanent), how Magswitch's switchable rare-earth technology works, the pull-off vs Safe Working Load distinction that catches buyers out, surface and material limits, AS 4991 compliance, and the AIMS range across Magswitch MLAY 1000, MLAY 600 and Prolift lines. Browse the lifting magnet range or call (02) 9773 0122 for sizing help. Magnetic lifters sit alongside beam clamps, plate clamps, and the slings triple (chain, wire rope, synthetic) in the AU rigging toolbox. Each tool wins on a different combination of load shape, material, surface condition, and cycle frequency. What a magnetic lifter is — and what it isn't A magnetic lifter is a rated lifting device that uses a controlled magnetic field to attach to a ferrous steel load. The magnetic field is generated by either permanent rare-earth magnets, an electromagnet (energised coil), or an electro-permanent system that combines both. The load attaches when the magnetic field is engaged and releases when it's switched off. It's not the same product as a magnetic-base drill stand, a welding ground clamp magnet, a magnetic sweeper, a pickup tool, or a magnetic chuck. Those are positioning, holding, retrieval or fabrication tools. A lifting magnet is a certified rated lifting device that complies with AS 4991:2004 Lifting Devices and is supplied with an individual test certificate, a unique serial number, and a stamped Working Load Limit (WLL). The simple test: a lifting-rated magnetic lifter is stamped with WLL in tonnes or kilograms, the AS 4991:2004 standard reference, the manufacturer name, a unique serial number, and a minimum plate thickness for the rated WLL. Without those markings, the device is not rated lifting equipment regardless of what it can pick up. Critical: a magnetic lifter only works on ferrous steel. Aluminium, brass, copper, plastic, timber, austenitic stainless steel grades 304 and 316, and most non-ferrous metals are non-magnetic — a lifting magnet will not pick them up. Magnetic stainless grades exist (400-series ferritic and martensitic) but most architectural and industrial stainless used in Australia is austenitic 304 or 316. Confirm the material before the lift. The forum-validated apprentice trap on r/Welding: "I once gave one of our young guys a lifting magnet and asked him to grab a piece of stainless plate for me." The plate didn't move. The three types — permanent, electromagnet, electro-permanent Magnetic lifters fall into three technology categories. Each has a different operating principle, different power requirements, and different fail-safe behaviour. Type How it generates the field Switching mechanism Power required during lift Fail-safe behaviour Permanent Always-on rare-earth or ferrite magnets Mechanical lever moves an iron pole-piece to short-circuit (off) or align (on) the magnetic flux path None Stays attached — fail-safe Electromagnet Coil energised by electric current generates magnetic field Current on / current off Continuous AC or DC supply Drops the load on power loss — battery backup mandatory Electro-permanent (Magswitch) Two opposing rare-earth permanent magnets; one fixed, one rotating Mechanical lever rotates the second magnet to either cancel (off) or reinforce (on) the fixed magnet's field None during lift Stays attached — fail-safe (mechanical not electrical) For most Australian industrial applications — fabrication, machining, steelyard handling, maintenance — the choice is between a permanent magnetic lifter (cheapest entry) and an electro-permanent Magswitch (premium tier). True electromagnets are reserved for very high capacities (10T+) and scrap handling where rapid magnetisation/demagnetisation cycling justifies the cabling and battery backup. AIMS stocks the permanent and electro-permanent types. How Magswitch electro-permanent technology works A Magswitch lifting magnet uses two rare-earth permanent magnets stacked vertically inside a cylindrical housing. The lower magnet is fixed; the upper magnet is mounted on a rotating spindle controlled by an external lever. The trick is in the geometry of how the two magnets' fields combine. When the lever is in the OFF position, the rotating upper magnet is oriented so its north pole sits above the fixed magnet's north pole and its south pole above the fixed south. The two fields oppose each other — they form a closed loop within the lifter housing and almost no flux escapes through the base plate. The lifter is essentially "magnetically silent" — touch it to a steel plate and you feel almost nothing. When the lever is rotated 180° to the ON position, the upper magnet flips: its north pole is now above the fixed south pole, and its south above the fixed north. The two fields reinforce each other and the combined flux flows out through the base plate and into the load. The lifter develops its full rated grip — anywhere from 100kg to 4,000kg+ depending on the model. The result is a lifting magnet with the safety advantages of a permanent magnet (no power required, fail-safe under power loss) plus the operational convenience of an electromagnet (rapid switchable on/off). The mechanical lever is the only moving part. The forum consensus on r/AskEngineers and r/Machinists is consistent: Magswitch's switchable design is the engineering benchmark for safe controlled magnetic lifting. The Magswitch MLAY 1000 is the workhorse single-cell electro-permanent lifting magnet — 1,000 lb (454 kg) Safe Working Load on flat steel ≥25mm thick. The MLAY 1000 series scales by adding cells in line: MLAY 1000x2 doubles the capacity to 908kg, MLAY 1000x3 reaches 1,362kg, and MLAY 1000x4 reaches 1,816kg. The MLAY 600 series follows the same pattern at lower capacity but smaller footprint — useful when access geometry matters more than peak load. Pull-off force vs Safe Working Load — the most-misread spec Pull-off force is the maximum force required to detach a magnet from a perfectly-prepared load under laboratory test conditions. Safe Working Load (SWL) is the rated lifting capacity for routine industrial use. The two numbers are different. Pull-off is typically 2.5 to 3.5× the SWL, depending on the manufacturer's design factor. The marketing "1320 lb pulling capacity" or "880 lb pull" stamped on cheap import lifters is the pull-off figure, not the SWL. Magswitch's official MagDolly manual states the rule plainly: "All magnetic heavy lifting magnets are de-rated for safe lifting. De-rating reduces the magnet's allowed lifting capacity down to the Safe Working Load (SWL)." The de-rating accounts for surface conditions, dynamic loads during the lift, and the inherent variability of magnetic adhesion under field conditions versus a controlled test bench. Term What it measures Conditions Use for Breakaway / pull-off force Force required to detach the magnet at the test instant Lab — perfectly flat, polished, machined, ≥25mm low-carbon steel test plate Comparison between magnet designs only — never use as lifting capacity Safe Working Load (SWL) / Working Load Limit (WLL) Rated lifting capacity for routine industrial use Real-world derated for surface variation, dynamic load, safety factor 2.5:1 to 3.5:1 The number that goes on the load plan — never exceed Safety factor Ratio of breakaway to SWL Typical AU industrial: 3:1 (Magswitch, premium AU brands), 2.5:1 (budget), 3.5:1 (some specialist heavy-duty) Identifying genuine industrial-grade vs over-stated import claims The practical buying rule: ignore the breakaway figure printed on the front of the box, find the SWL on the data plate, confirm the safety factor, and confirm AS 4991 compliance. A "1000lb pulling capacity" cheap import with no AS 4991 stamp is not 1000lb of lifting capacity — typically it's 300-400lb SWL with a 2.5:1 factor, and even that assumes perfect surface conditions. Surface conditions — flat, clean, thick enough The three conditions that determine whether a magnetic lifter develops its rated capacity are: surface flatness, surface cleanliness, and plate thickness. Get any one wrong and the SWL drops dramatically — sometimes to a fraction of the marked rating. Flatness. The magnetic field flows from the lifter's base into the load through the contact area. A flat lifter base on a flat plate face gives 100% contact; a flat lifter base on a curved surface (round bar, pipe, dished plate) gives a tiny line-contact patch that may be only 10-20% of the rated contact area, and the SWL falls proportionally. The forum-validated rule from r/metalworking is direct: "Lifting magnets are only reliably safe when used with flat surfaces. Trusting a lifting magnet to perform safely on curved surfaces is never safe." Some specialist lifters have V-grooves cut into the base for round material — capacity is rated separately for round stock and is typically 30-50% of the flat-plate rating. Cleanliness. Rust scale, paint, mill scale, oil, grease, water, and dirt all interpose between the lifter base and the load. Each layer adds an air gap that the magnetic field must bridge — and magnetic flux drops sharply with air-gap distance. A 0.5mm rust scale or paint layer can reduce capacity by 30-50%. Magswitch's MagDolly manual is explicit: surface preparation requires removing scale, rust, and paint before the lift. The forum direct quote on r/metalworking: "the manual wants you to remove scale/rust/paint as well." Thickness. Each lifting magnet specifies a minimum plate thickness for the rated SWL. Below that thickness, the magnetic flux saturates the plate and excess field leaks out the back face — capacity drops linearly with thickness reduction. Typical minimums: Lifter capacity (SWL) Typical minimum flat-plate thickness for rated SWL Below this thickness 100 kg 10 mm Capacity drops linearly — 8mm typically gives ~80%, 5mm gives ~50% 300 kg 15 mm Manufacturer derating chart applies 500 kg (Prolift) 20 mm Below 20mm, consult manufacturer derating curve 600 kg (Magswitch MLAY 600) 15 mm Magswitch publishes specific derating for thinner stock 1000 kg (Magswitch MLAY 1000) 25 mm Below 25mm, capacity derates per Magswitch chart 2000 kg+ 40 mm+ Heavy plate only at full rating Manufacturer derating curves cover the thickness vs capacity relationship below the minimum. They're worth printing and keeping on the lifter cabinet. For thin sheet stock that falls well below the minimum, vacuum lifters or sheet handling slings are typically the better tools — see our Plate Clamp Guide for the alternative methods. What magnets DO and DON'T pick up — material guide Magnetic lifters work on ferrous (iron-bearing) steel only. The strength of attraction depends on the material's magnetic permeability — how readily the material conducts magnetic flux. Material Magnetic? Lifting capacity (vs rated SWL on low-carbon steel) Mild steel (AS/NZS 3678 grade 250/300/350) ✓ Strongly magnetic 100% — the rated baseline Cast iron (grey, ductile) ✓ Magnetic but porous ~50% — porous structure leaks flux High-carbon steel / spring steel ✓ Magnetic but harder ~80-90% — slightly reduced permeability Tool steel (hardened) ✓ Magnetic ~50-70% — high carbon and hardening reduce permeability 400-series stainless (ferritic, martensitic — e.g. 410, 430) ✓ Magnetic ~50-70% 304 / 316 stainless (austenitic) ✗ NON-magnetic 0% — magnet won't pick it up Aluminium (any grade) ✗ Non-magnetic 0% Brass, bronze, copper ✗ Non-magnetic 0% Lead, zinc, tin ✗ Non-magnetic 0% Titanium ✗ Effectively non-magnetic 0% Galvanised steel ✓ Magnetic (steel substrate) ~95% — galvanising adds tiny air gap; minimal effect Painted / coated steel ✓ Magnetic (steel substrate) Varies — paint thickness adds air gap; typical derate 10-30% The single most important material rule for AU industrial users: 304 and 316 austenitic stainless steel is non-magnetic. A magnetic lifter will not pick up a 304 or 316 plate. This is the most-cited apprentice trap in welding and fabrication forums. Most architectural stainless, food-grade stainless, and chemical-industry stainless plate is austenitic. For stainless plate handling, use non-marring plate clamps with leather pads or vacuum lifters. Plate thickness, surface area, and de-rating in practice The published SWL for a magnetic lifter is the value at full conditions: flat steel, clean surface, plate at or above the minimum specified thickness. For real-world plate that doesn't meet all three conditions, capacity is derated multiplicatively. A worked example shows the maths: Worked example. Lifting an 18mm thick mill-scale-coated mild steel plate measuring 1500 × 750 mm with a Magswitch MLAY 1000 (rated SWL 454 kg / 1000 lb on ≥25mm clean flat steel). Thickness derating. Plate is 18mm against 25mm minimum. Magswitch chart shows ~80% capacity at 18mm. Capacity = 454 × 0.80 = 363 kg. Surface derating. Mill scale on the surface adds typically 0.2-0.5mm of low-permeability layer. Conservative derate 25%. Capacity = 363 × 0.75 = 273 kg. Plate weight check. 18 × 1500 × 750 mm at 7,850 kg/m³ = 159 kg. Well within the 273 kg derated capacity. Margin check. Derated capacity (273 kg) ÷ load (159 kg) = 1.7× margin. Acceptable for a routine lift. For loads where the margin falls below 1.5× after derating, step up to the next lifter size — MLAY 1000x2 at 908 kg SWL, for example, gives much more comfortable margin on the same plate. Or strip the mill scale before the lift to recover the surface-condition derate. Hand-held vs hoist-attached lifters Magnetic lifters split into two product classes by how they're operated. Hand-held lifters are designed for one person to manually pick up a load using the lifter's integrated handle. Capacities run from 60 kg to roughly 200 kg — small enough to lift by arm strength alone. Used for sheet metal handling, small fabrication work, sheet stack picking, and workshop transfers within arm's reach. The Magswitch Fixed Single Hand Lifter (rated 390 lb breakaway / ~120 kg SWL) and Magswitch Fixed Dual Hand Lifter (rated 780 lb breakaway / ~240 kg SWL with two-person operation) are AU workshop standards. Hoist-attached lifters are designed to hang from a chain block, electric hoist, jib crane, or overhead bridge crane. Capacities run from 100 kg to 4,000 kg+ and the lifter has a robust shackle or bail attachment at the top. The Magswitch MLAY 600 and MLAY 1000 series and the Prolift 500 kg are the AIMS hoist-attached range. These are the workhorse lifters for heavy industrial steel handling. The choice is straightforward: weight of routine load. Below 100 kg, a hand-held lifter is faster — no rigging, no overhead structure required. Above 200 kg, a hoist-attached lifter is the only option. Between 100 and 200 kg, it depends on lift height, distance, and frequency. The Magswitch ecosystem — Hand Lifter, Mag Dolly, MagReach Magswitch's electro-permanent technology has spawned a family of related products beyond the core MLAY lifting magnets. Several are stocked at AIMS for specialty applications. Fixed Single Hand Lifter — manual hand-held lifter, 390 lb breakaway. Single-person sheet handling. Fixed Dual Hand Lifter — two-handle version, 780 lb breakaway. Two-person heavier sheet lifting or longer plate handling. MagReach 400 — extended-reach magnetic retrieval tool, 400 lb breakaway, 50.5–90 inch reach. Recovery of ferrous items dropped into pits, drains, machinery interiors, or overboard. A specialty product but useful in mining, marine, and heavy maintenance work. Mag Dolly 917mm — wheeled trolley with integrated lifting magnet, designed for moving long stock (rails, beams, pipes) along a fabrication shop floor. The magnet engages the steel; the dolly's wheels support the load weight; the operator pushes the assembly along. For the core lifting application — picking up a load, lifting it with a hoist, transporting and setting down — the MLAY 600 and MLAY 1000 series are the AIMS workhorse range. The ecosystem products fill niche applications that arise in real workshops. Multi-magnet rigging for long stock For long beams, rails, or pipes, a single lifting magnet at one point applies a bending moment to the load and concentrates the lifting force at a small contact area. Two or more magnetic lifters connected via a spreader bar or lifting beam distribute the load across multiple pickup points and eliminate the bending stress. The standard configuration: two lifting magnets, each rated for at least 60% of the load weight, attached at the 1/4 and 3/4 points along the load length, hanging from a rated lifting beam (spreader bar) above. The spreader bar attaches to the chain block or hoist via a single vertical line. Each magnet sees vertical load only — no bending, no side load, no pry force. Critical: do not rig multiple slings to a single magnetic lifter at angles to vertical. The forum-validated rule from r/Rigging applies to magnets the same as to beam clamps: any side load on the lifter base creates pry forces that can defeat the magnetic adhesion. The lifter base wants to peel off the load. Multi-leg slings need a spreader bar or lifting beam between the slings and the magnet. For long-stock handling at high cycle rate, the Magswitch Mag Dolly or specialist multi-cell heavy lifter assemblies are purpose-designed alternatives. Contact us for engineered multi-magnet configurations. AS 4991:2004 — the Australian standard Magnetic lifters used in Australian industrial lifting comply with AS 4991:2004 Lifting Devices — the same standard governing beam clamps, plate clamps, and other below-the-hook lifting devices. Compliant magnetic lifters carry an AS 4991 stamp on the body or data plate, plus: Manufacturer name and country of origin Working Load Limit (SWL) in tonnes or kilograms Minimum plate thickness for the rated SWL Maximum operating temperature Unique serial number traceable to the individual test certificate Date of manufacture The standard requires a design factor of at least 3:1 for permanent and electro-permanent magnetic lifters — meaning the breakaway force must be at least 3× the SWL. For premium AU and global manufacturers (Magswitch, Eclipse, Walmag, Goudsmit), the design factor is typically 3:1 to 3.5:1. For cheap imports (Vevor, no-name) the factor may be quoted as 2.5:1 — at the lower end of the range and without independent AS 4991 verification. European EN 13155 is the equivalent international standard. AU principal-contractor sites typically require AS 4991 specifically, not just EN 13155. Magswitch certifies its industrial lifting range to AS 4991:2004 plus ISO 9001 quality management. Pre-use inspection Pre-use inspection takes 60 seconds and catches the failures before they happen. Six-point check: Check What you're looking for Data plate / WLL marking Legible SWL, AS 4991, manufacturer, serial number, minimum plate thickness. If you can't read it, the lifter is out of service. Switching lever action Lever moves smoothly through full travel between OFF and ON positions. Detents engage cleanly. No notching, sticking, or excessive force required. Lock pin / safety latch Lock pin engages in ON position to prevent accidental release under vibration. Pin springs back out cleanly when released. Base plate condition Base flat, free of nicks, gouges, chips, or rust pitting. Surface clean and dry. The base is the magnetic contact area — damage = lost capacity. Lifting eye / shackle Eye not opened up, no visible elongation, no cracks in the welds. Shackle pin secure if shackle is permanently fitted. Test certificate currency Periodic inspection within 6-12 months. Annual NATA proof-test for hire-fleet equipment on regulated sites. The functional pre-use test: with the magnet OFF, place the base on a clean steel test plate. Switch ON. Confirm the magnet attaches firmly (a small pull should not detach it). Switch OFF. Confirm the magnet releases freely. Damaged or sticky-lever lifters go out of service until inspected by a competent person. Where lifting magnets fail — forum-validated failure modes Failure mode Cause Prevention Load drops on power loss (electromagnet) Electromagnet de-energised by power outage, cable damage, or operator error. Battery backup mandatory. Permanent or electro-permanent (Magswitch) types are inherently fail-safe — no power required during lift. Magnet won't pick up the load (304/316 stainless) Material is austenitic stainless — non-magnetic. Apprentice trap. Confirm material before lift. For 304/316 use plate clamps or vacuum lifters. Plate slips or peels off mid-lift Surface contamination (rust scale, paint, oil), insufficient plate thickness, or curved surface. Surface preparation per manufacturer manual. Confirm plate thickness ≥ minimum spec. Flat surfaces only unless V-grooved lifter on round stock. Lever rotates partially / weak grip Lever not fully engaged to ON position; lock pin not secured. Always rotate lever to detent stop. Verify lock pin engaged before lifting load. Heat-induced capacity drop Load (e.g. just-welded plate, hot-rolled stock, parts straight from heat treat) above magnet's max operating temperature. Most rare-earth permanent magnets lose capacity above 80°C; some grades fail above 120°C. Wait for parts to cool before lifting. Pry-off from side-load with multi-leg sling Operator rigged 4-leg sling directly from the magnet's lifting eye instead of through a spreader bar. Multi-leg slings always through a lifting beam or spreader bar. Single vertical line direct from hoist. Overload on round bar or pipe Flat-base magnet used at full SWL on round stock with line-contact only. Round-stock derating typically 30-50% of flat-plate SWL. Use V-grooved magnet or specialist pipe lifter. Operator misuse / inadequate training Most documented incidents — see r/Rigging field reports. Operator licensing (CPCCLDG3001 dogging minimum), manufacturer-supplied training, supervised first lifts on each new lifter type. Lifting magnets vs plate clamps vs vacuum lifters Magnetic lifters are not the only option for handling steel plate. The right tool depends on material, surface condition, cycle rate, and load shape. Method Best for Limitations Magnetic lifter High-cycle ferrous steel handling, flat plate, sheet, billet Ferrous steel only; flat and clean surfaces; minimum plate thickness Plate clamps Any plate material (incl. stainless, aluminium); curved or coated surfaces; outdoor work Slower to fit and remove; teeth-marked plate face (toothed clamps); horizontal type requires pairs Vacuum lifters Smooth thin sheet (steel, glass, plastic, painted); marking-sensitive surfaces Surface must be smooth and clean; vacuum loss = load drops; perforated stock won't seal Slings around the load Any load shape with profiled edges or designed lift holes; non-magnetic materials; outdoor field work Slowest; needs lift holes or basket geometry; sling damage from sharp edges Most production-rate fabrication shops have all three — magnetic lifters for the bulk of routine ferrous work, plate clamps for stainless and outdoor jobs, and slings for special cases. The forum consensus from r/Rigging confirms this: magnets and plate clamps are not competitors; they're complementary tools for different jobs. AIMS lifting magnet range AIMS stocks the Magswitch electro-permanent range plus the Prolift permanent magnet line. Magswitch is the AU-engineered premium tier — switchable, fail-safe, AS 4991:2004 compliant, ISO 9001 certified manufacturing. Browse the full lifting magnet collection. Magswitch MLAY 1000 series — workhorse heavy lifter: Magswitch MLAY 1000 — single cell, 1,000 lb (454 kg) SWL on ≥25mm flat steel Magswitch MLAY 1000x2 — dual cell, 908 kg SWL Magswitch MLAY 1000x3 — triple cell, 1,362 kg SWL Magswitch MLAY 1000x4 — quad cell, 1,816 kg SWL Magswitch MLAY 600 series — compact and accessible: Magswitch MLAY 600 — single cell, 600 lb (272 kg) SWL on ≥15mm flat steel Magswitch MLAY 600x2 — dual cell, 544 kg SWL Magswitch MLAY 600x4 — quad cell, 1,089 kg SWL Prolift permanent magnet: Prolift Lifting Magnet 500 kg — entry-level permanent magnetic lifter, AS 4991 compliant Magswitch hand lifters and ecosystem: Magswitch Fixed Single Hand Lifter — 390 lb breakaway, single-handle Magswitch Fixed Dual Hand Lifter — 780 lb breakaway, dual-handle for two-person operation Magswitch MagReach 400 — extended-reach retrieval, 400 lb breakaway, 50.5–90 inch reach Magswitch Mag Dolly 917mm — wheeled long-stock handling trolley Need help sizing for your application? Call us on (02) 9773 0122 or contact our team. We can match the right Magswitch unit to your plate thickness, material, surface conditions, and lift cycle. Selection checklist + how to order A practical pre-order checklist: Confirm material is ferrous steel. Mild steel, structural steel, carbon steel, ferritic stainless = yes. Austenitic 304/316 stainless, aluminium, brass, copper = no. Measure plate thickness. Must be ≥ the lifter's minimum spec for full SWL. Below minimum, apply manufacturer derating chart. Assess surface condition. Mill scale, rust, paint, oil all derate capacity. Plan to clean to bright steel for full SWL, or apply 25-50% surface derating. Confirm load weight with margin. Derated SWL must exceed load weight by at least 1.5× for routine work, 2× for critical lifts. Select capacity. Magswitch MLAY 600 single cell for ~270 kg, MLAY 1000 single cell for ~450 kg, larger multi-cell models or two-magnet rigs for heavier loads. Hand-held or hoist-attached? Hand-held for <100 kg routine; hoist-attached for >200 kg or repetitive work. Confirm AS 4991:2004 compliance on the data plate. Non-negotiable. Operator licensing — dogging or rigging licence as required (CPCCLDG3001 for hoist-attached lifting work). The five most common buyer mistakes — every one of them avoidable: Reading the breakaway/pull-off figure as the lifting capacity (it's typically 3× the actual SWL). Buying for a stainless steel application without confirming the material is magnetic (304/316 = no). Undersizing the lifter for the plate thickness available (thin plate dramatically derates). Choosing a flat-base magnet for round bar or pipe handling without checking the round-stock derate. Buying a cheap import without AS 4991 compliance to save money on a safety-critical lift. Frequently Asked Questions What is a lifting magnet used for? A lifting magnet (also called a magnetic lifter) is a below-the-hook lifting device used to attach a steel load to a chain block, electric hoist, jib crane or overhead bridge crane via magnetic attraction. Common applications include moving steel plate between racks, picking single sheets from a stack, transferring billet between workstations, handling structural sections on a fabrication line, and retrieving ferrous items from drains, pits, or machinery interiors. What's the difference between a permanent magnet, electromagnet, and Magswitch lifter? A permanent magnetic lifter uses always-on rare-earth or ferrite magnets switched between pole-piece configurations by a mechanical lever. An electromagnet uses an electric coil that requires continuous power during the lift; power loss = dropped load. A Magswitch electro-permanent lifter uses two opposing rare-earth permanent magnets switched between cancelling and reinforcing positions by a mechanical lever — no power required, fail-safe, and rapidly switchable. Magswitch is the modern AU industrial standard combining the best features of both. How does a Magswitch magnetic lifter work? A Magswitch lifter contains two rare-earth permanent magnets stacked vertically. The lower magnet is fixed; the upper magnet rotates on a spindle controlled by an external lever. In the OFF position the two magnets oppose each other, forming a closed loop within the housing — almost no flux escapes. In the ON position the upper magnet flips 180°, so the two fields reinforce each other and full flux flows out through the base plate into the load. The mechanical lever is the only moving part; no electric power is required during the lift. Will a lifting magnet pick up stainless steel? Only ferritic and martensitic 400-series stainless grades (e.g. 410, 420, 430). Austenitic 304 and 316 stainless — the most common architectural, food-grade and chemical-industry stainless used in Australia — is non-magnetic; a lifting magnet will not pick it up regardless of plate thickness or magnet capacity. Confirm the grade with a small test magnet before planning a magnetic lift on stainless plate. For 304/316 plate handling, use a non-marring plate clamp or vacuum lifter — see our Plate Clamp Guide. What's the difference between pull-off force and Safe Working Load (SWL)? Pull-off (or breakaway) force is the maximum force required to detach a magnet from a perfectly-prepared load under laboratory conditions — flat, clean, machined, low-carbon steel test plate at full thickness. Safe Working Load (SWL) is the rated lifting capacity for routine industrial use, derated from the pull-off figure by a safety factor (typically 3:1) to account for surface variation, dynamic loads, and field conditions. The marketing "1000 lb pull" on cheap import lifters is the breakaway figure; the SWL is typically 300-400 lb. Always read the SWL from the data plate, not the marketing claim. What plate thickness do I need for a 1000 kg lifting magnet? Approximately 25mm of flat low-carbon mild steel is the typical minimum thickness for full 1000 kg SWL on a single-cell heavy lifter (e.g. Magswitch MLAY 1000). Below 25mm, magnetic flux saturates the plate and excess field leaks through to the back face — capacity drops linearly. Manufacturers publish derating curves: at 18mm typical capacity is ~80%, at 12mm ~60%, at 6mm ~40%. For thinner plate, step up to a multi-cell magnet (MLAY 1000x2 spreads the flux across more contact area) or use plate clamps instead. Can I use a lifting magnet on a curved surface or pipe? Generally no with a flat-base magnet. The magnetic field flows from the lifter base into the load through the contact area; a flat base on a curved surface gives only a tiny line-contact patch and capacity falls to 30-50% of the rated flat-plate SWL. Specialist V-grooved lifters are designed specifically for round bar and pipe — the V-groove maximises contact area against the curved surface. Round-stock SWL is rated separately on the data plate and is significantly lower than the flat-plate rating. For pipe handling, see specialist pipe lifters or use slings. Why do I need to clean the surface before lifting? Magnetic flux drops sharply across air gaps. Rust scale, paint, mill scale, oil, grease, water, and dirt all act as low-permeability layers between the lifter base and the load — each layer reduces effective flux transfer. A 0.5mm rust scale or paint layer can reduce capacity by 30-50%. Magswitch's MagDolly manual is explicit on this: surface preparation requires removing scale, rust, and paint to bright steel before the lift for the rated SWL. Without preparation, the lifter is operating in the manufacturer's derating zone. Do lifting magnets comply with AS 4991? All lifting magnets stocked at AIMS for industrial use comply with AS 4991:2004 Lifting Devices, the Australian standard governing below-the-hook lifting equipment. Each unit carries an AS 4991 stamp, manufacturer name, SWL, minimum plate thickness, serial number, and ships with an individual test certificate. Magswitch additionally certifies to ISO 9001 quality management. Australian principal-contractor sites typically reject lifting equipment that carries only the European EN 13155 mark — AS 4991 is the AU site requirement. What happens to a lifting magnet if the power fails? Permanent and electro-permanent (Magswitch) lifting magnets are inherently fail-safe — they require no power during the lift. The magnetic field is generated by permanent rare-earth magnets, and the switching mechanism is purely mechanical. Power loss has no effect on the magnetic adhesion. Electromagnet lifters are not fail-safe — they require continuous current during the lift, and power loss causes the field to collapse and the load to drop. For this reason, AU industrial sites overwhelmingly choose permanent or electro-permanent technology. Where electromagnets are used (very high capacity, scrap handling), battery backup systems are mandatory. How hot can a lifting magnet get before losing capacity? Most rare-earth (neodymium-iron-boron) permanent magnets used in industrial lifting magnets begin to lose magnetic strength above 80°C and lose strength dramatically above 120°C. Standard-grade neodymium magnets are rated to 80°C max operating temperature; high-temperature variants (SH, UH grades) reach 150°C. Loads coming straight from welding, heat treatment, hot-rolling, or annealing must cool to below the magnet's max temperature before lifting. The data plate specifies the maximum operating temperature for the unit — exceed it and capacity is unreliable. Can I rig a multi-leg sling to a single lifting magnet? No — not without a spreader bar between the slings and the magnet. Multi-leg slings applied directly to a single magnetic lifter's lifting eye apply pry forces at angle to the base plate; the lifter base wants to peel off the load, defeating magnetic adhesion. The correct rig is a single vertical line from the hoist to the magnet's lifting eye, or two/more magnets attached to a rated lifting beam (spreader bar) with the slings connecting from the beam to the load. Same rule applies to beam clamps and plate clamps. Does a lifting magnet damage the load surface? Generally no. The base of a lifting magnet contacts the load over a flat area with no biting teeth, no clamping pressure, and no edge contact. Surface marks from a lifting magnet are typically minimal — magnetic residue (which wipes off) and possible light contact marks if the base is dragged across the load. For finished or polished steel surfaces, the lifter is gentler than a toothed plate clamp. The exception is if the lifter is dropped onto the load (mechanical damage from impact) or if magnetic particles contaminate the load surface — relevant for some food-grade and pharmaceutical applications. What's the difference between Magswitch MLAY 600 and MLAY 1000? The MLAY 600 is rated 600 lb (272 kg) SWL per cell on ≥15mm flat steel; the MLAY 1000 is rated 1,000 lb (454 kg) SWL per cell on ≥25mm flat steel. Both use the same electro-permanent technology but the MLAY 1000 has larger rare-earth magnets, a heavier base plate, and requires thicker plate to develop full SWL. The MLAY 600 is the choice for medium-capacity work on plate around 15-20mm; the MLAY 1000 is the choice for heavier capacity on plate ≥25mm. Both ranges scale by adding cells in line — 1×, 2×, 3×, 4× configurations multiply the single-cell SWL. Can a lifting magnet pick up aluminium, brass or copper? No. Aluminium, brass, copper, lead, zinc, tin, titanium, and most non-iron metals are non-magnetic and will not be picked up by any lifting magnet regardless of capacity. The magnetic field cannot grip non-ferrous materials. For aluminium plate handling, use plate clamps or vacuum lifters. For aluminium sheet, vacuum lifters with smooth-surface cups are the standard tool. For brass, copper, or other non-ferrous metals, slings around the load through lift holes or rigged in a basket configuration are the typical method. AIMS stocks the full welding range — MIG, TIG, stick welders, wire, rods, gases and consumables. Browse the AIMS Lubrication collection for industrial greases, gear oils, hydraulic fluids and dispensing equipment. Need lifting chain links? Browse the AIMS range at lifting chain links. People Also Ask — Magnetic Lifters Q: What is a magnetic lifter? A magnetic lifter is a handling device that uses permanent or electro-permanent magnetic force to pick up and move ferromagnetic materials such as steel plate, blocks, and billets. Magnetic lifters eliminate the need for slings, clamps, or through-holes in the workpiece — the magnet attaches directly to a flat ferromagnetic surface, making them ideal for thin plate, precision parts, and situations where conventional rigging would damage the surface. Q: What is the difference between a permanent magnet lifter and a Magswitch? A traditional permanent magnet lifter uses a lever or handle to align or misalign fixed permanent magnets to turn the holding force on and off. A Magswitch uses electro-permanent technology — a brief electrical pulse reorients internal permanent magnets to switch holding force on or off, but no power is required to maintain the magnetic circuit. This means Magswitch lifters retain their hold even if power is lost during a lift, unlike electromagnets which release when power fails. Q: What is the difference between SWL and pull-off force for magnetic lifters? The Safe Working Load (SWL) is the maximum load the lifter should be used to lift under safe working conditions, accounting for a safety factor (typically 3:1 to 5:1). The pull-off force is the maximum force measured in a laboratory test before the magnet releases. Because real-world conditions — surface finish, plate thickness, air gaps from rust or paint, and side-loading — reduce effective holding force, the SWL will always be substantially lower than the maximum pull-off force. Q: What materials can a magnetic lifter pick up? Magnetic lifters work only on ferromagnetic materials — mild steel and iron are the primary targets. Aluminium, copper, brass, titanium, and non-metallic materials such as plastic, wood, and concrete are non-magnetic and cannot be lifted. Stainless steel varies by grade — austenitic grades (304, 316) are generally non-magnetic, while ferritic and martensitic grades can be magnetic, though holding force may be reduced compared to mild steel. Q: What plate thickness is required for magnetic lifting? As a general rule, the steel plate needs to meet the lifter's specified minimum plate thickness — typically 10–20mm for medium-duty lifters. Thin plate does not provide a complete magnetic circuit, which dramatically reduces effective holding force. Some Magswitch models publish working loads for different plate thickness ranges, and the rated SWL applies only when the minimum plate thickness is met on a clean, flat surface. Q: How do I lift long stock like beams or pipes with magnetic lifters? A single lifting magnet at one point on a long beam, rail or pipe applies a bending moment and concentrates the lifting force at a small contact area — not ideal. The standard approach is two magnetic lifters, each rated for at least 60% of the load weight, attached at the 1/4 and 3/4 points along the load, hanging from a rated lifting beam (spreader bar) that connects to the hoist via a single vertical line. This distributes the load and means each magnet sees vertical load only — no bending or side load. Never rig multiple slings to a single magnetic lifter at an angle to vertical: any side load on the lifter base creates pry forces that can peel it off the load, the same rule that applies to beam clamps. Q: What other Magswitch products does AIMS stock besides the core lifting magnets? Beyond the MLAY series lifting magnets, AIMS stocks several Magswitch products for specialty applications: the Fixed Single Hand Lifter (manual hand-held, 390 lb breakaway, single-person sheet handling), the Fixed Dual Hand Lifter (two-handle version, 780 lb breakaway, for two-person or longer plate handling), the MagReach 400 (extended-reach magnetic retrieval tool, 400 lb breakaway, 50.5–90 inch reach, for recovering ferrous items from pits, drains or machinery interiors), and the Mag Dolly 917mm (a wheeled trolley with an integrated lifting magnet for moving long stock like rails, beams and pipes along a fabrication shop floor). Q: What happens if an electromagnet lifter loses power mid-lift? An electromagnet's load drops if it's de-energised by a power outage, cable damage, or operator error — which is why battery backup is mandatory on electromagnetic lifting equipment. Permanent and electro-permanent (Magswitch) magnetic lifters are inherently fail-safe by comparison: they don't require power to maintain the lift, so a power loss can't cause the load to drop. Q: What lifting magnet capacities does AIMS stock in Australia? AIMS stocks the Magswitch MLAY electro-permanent range across two capacity series: MLAY 600 (single cell, 600 lb / 272 kg SWL on 15mm+ flat steel, plus a dual-cell 600x2 at 544 kg) for lighter, more compact jobs, and MLAY 1000 (single cell, 1,000 lb / 454 kg SWL on 25mm+ flat steel, scaling through 1000x2 at 908 kg, 1000x3 at 1,362 kg and 1000x4 at 1,816 kg) for heavier plate and multi-cell lifts. AIMS also stocks the Prolift permanent magnet line alongside the Magswitch range — Magswitch is Australian-engineered, switchable, fail-safe and AS 4991:2004 compliant with ISO 9001 certified manufacturing.
Read morePlate Clamp Guide: Vertical, Horizontal, Universal & MAGIC Selection Method
Plate clamps for lifting steel: vertical, horizontal and universal types, AS 4991, jaw selection, hardness limits and Australian brand guidance.
Read moreWebbing & Round Slings Guide: WLL Colour Codes, Hitches & AS 1353 Standards
If you lift loads in an Australian workshop, fabrication shop, or on a construction site, you'll reach for a sling almost every day. Three types do almost all the work: chain slings for heavy-duty production lifting, wire rope slings for high-temperature and abrasive environments, and synthetic slings — the webbing and round slings covered in this guide — for almost everything else. Synthetic slings are the most-used sling type in AU industry. They're light, flexible, gentle on painted and machined surfaces, and rated to AS 1353 (webbing) or AS 4497 (round) with an 8:1 safety factor. A 1-tonne webbing sling weighs about 350 grams; a 1-tonne chain sling weighs over 4 kilograms. The trade-off is abrasion sensitivity — a synthetic sling that's been dragged across a sharp edge or chemical-soaked is finished, where a chain sling would shrug it off. This guide covers webbing (flat) slings and round slings — the two synthetic-sling formats — for Australian industrial lifting. We'll cover construction, the AS 1353 + AS 4497 standards framework, the WLL colour-code chart, hitch types and deration, inspection and retirement criteria, and where each format wins. AIMS stocks the full range across Austlift, Beaver, Garrick Herbert, and Yoke — 100+ SKUs. Browse the rigging and lifting slings range or call (02) 9773 0122 for sizing help. For chain slings see our Chain Sling Guide; for wire rope slings see the Wire Rope, Slings & Rigging Guide. This article is the third in the slings triple — synthetic webbing and round slings, both governed by AS 1353 and AS 4497. What synthetic slings are — webbing vs round Synthetic slings are flexible textile lifting devices made from high-tenacity polyester yarn. Two formats dominate the AU market: Webbing (flat) slings are woven polyester webbing — flat, ribbon-like, with sewn loop eyes at each end (or sewn endless for the rarer endless variant). The webbing is usually constructed in 1, 2, or 4 plies of webbing layered together — a 4-ply sling at the same WLL is shorter and stiffer than a 1-ply sling, but more abrasion-resistant. Most operators recognise webbing slings as the "flat blue/green/yellow lifting straps" they see on workshop walls and at builders' yards. Round slings are continuous loops of polyester core fibres encased in a woven polyester jacket. The jacket protects the core from abrasion; the core takes the load. Round slings are even more flexible than webbing — they conform around odd-shaped loads, distribute load evenly across multiple pickup points, and are softer on painted or polished surfaces. Heavy-duty round slings (Beaver Jumbo and Mega ranges) are how 30-, 50- and even 100-tonne loads get lifted in modular construction and heavy industry. Both formats sit alongside chain slings and wire rope slings in the AU rigging toolbox. The slings triple — chain (covered in our Chain Sling Guide), wire rope (covered in our Wire Rope, Slings & Rigging Guide), and synthetic (this guide) — covers the vast majority of below-the-hook lifting. Synthetic slings own the day-to-day workshop and trade applications; chain wins on heavy production duty cycles; wire rope wins on heat and severe abrasion. Webbing (flat) slings — construction and anatomy A flat webbing sling is woven polyester webbing fabricated to AS 1353.1 specifications. The most common construction is 100% high-tenacity polyester yarn woven in standard widths (25mm, 50mm, 75mm, 100mm, 150mm, 200mm, 240mm, 300mm), folded back at each end to form a sewn loop eye, and layered into 1-ply, 2-ply, or 4-ply configurations to achieve the rated capacity. The key parts: Body — the main length of webbing that takes the load. Width and ply count combine to set the WLL. Eyes — sewn loops at each end. Standard folded eyes for general-purpose use; reinforced or "twisted" eyes for harder-wearing applications. Sewing — multi-stitch box patterns at the eye joins. The stitching is the weakest point on the sling — a healthy stitch pattern is the inspection focus. Tag — sewn-in label with WLL, manufacturer, AS 1353 reference, serial number, length and date of manufacture. The tag is the legal certificate; if it's illegible, the sling is out of service. Ply count matters: a 2-tonne 1-ply sling and a 2-tonne 2-ply sling have the same vertical WLL but different bend characteristics. The 2-ply is shorter for the same nominal length, less flexible, and harder-wearing. A 1-ply Beaver Flat Webbing Sling 1-Ply is the lighter, more flexible choice for clean workshop work; a 2-Ply or 4-Ply Beaver sling steps up for harder duty. The Garrick Flat Webbing Sling range is the AU mid-tier — 1-ply construction, full 1T to 10T+ capacity range, AS 1353 compliance, sewn-in tag with serial number. Browse the full webbing sling range for the size and capacity you need. Round slings — construction and anatomy A synthetic round sling looks like a continuous polyester loop — there are no visible eyes, no sewn ends. Inside the woven polyester outer jacket, a continuous core of polyester yarns runs in a single endless loop. The number of core yarns determines the capacity; the jacket is purely abrasion protection — it doesn't carry load. Construction is governed by AS 4497.1. Manufacturers wind a continuous polyester yarn around a fixed length to build up the core to the rated capacity, then enclose the core in a woven jacket sleeve. The jacket is colour-coded by capacity (we'll cover the chart below), and a sewn-in label provides the legal WLL, manufacturer, serial number, length, and AS 4497 reference. The key parts: Core — the polyester yarn loop that takes the load. Hidden inside the jacket. Jacket — the woven polyester sleeve. Colour-coded for WLL (1T violet, 2T green, 3T yellow, etc.). Provides abrasion protection. Tag — same data as a webbing sling tag. Sewn into the jacket. The big advantage: round slings cradle a load with a rounded, soft contact area. Webbing slings squeeze a load between two flat surfaces; round slings flow around the load. For odd-shaped or coated loads — castings, finished machinery, fragile fabrications, painted assemblies — the round sling is gentler and more secure. The trade-off is that the jacket can hide internal core damage; an abraded jacket is obvious, but shock-loading or chemical exposure can damage the core without leaving visible jacket marks. AIMS stocks the full Austlift range across all common WLLs: Austlift Round Sling 1-Tonne (Violet) — workhorse light-duty option, 0.5m to 8m lengths. Austlift Round Sling 2-Tonne (Green) — the most-used WLL in AU industrial work. Austlift Round Sling 3-Tonne (Yellow) — step-up for heavier loads. Austlift Durabone Round Sling 2-Tonne — heavy-duty jacket variant for high-abrasion environments. Garrick Round Sling 5-Tonne (Red) — mid-tier 5T option. Beaver Mega Round Sling 6-Tonne (Brown) — heavy-duty premium tier. Beaver Jumbo Round Sling 30-Tonne — for modular construction, transformers, and other heavy industrial lifts. Webbing vs round — when to use each Both work. Both are AS-compliant. Both come in the same WLL range. The decision usually comes down to load shape, surface sensitivity, and how harsh the environment is. Choose webbing (flat) when Choose round when Load has flat parallel surfaces (boxes, crates, bundles, beams) Load has curved, irregular, or rounded surfaces (castings, vessels, tanks) Visual abrasion inspection matters — webbing shows damage clearly Surface protection matters — finished/painted/polished surfaces You need a wide bearing area to spread load on soft material You need maximum flexibility for complex multi-leg setups Heavier-duty cycle work (4-ply construction is more abrasion-resistant) Frequent re-rigging — round slings stow into smaller bundles Lower price point at equivalent WLL — typical for trade and maintenance Choker and basket hitches that need to flex tightly around the load In real workshops, most operators have both. A 2T webbing sling and a 2T round sling cover 80% of day-to-day lifting between them. The forum consensus from r/Rigging and Practical Machinist machine-shop threads matches this: webbing for boxes and beams, round for castings and machinery. AS 1353 + AS 4497 — Australian standards explained Two Australian Standards govern synthetic slings: AS 1353.1-1997 Flat synthetic-webbing slings (Product specification). Sets the design, materials, construction, marking and testing requirements for webbing slings sold in Australia. AS 1353.2-1997 Flat synthetic-webbing slings (Care and use). Covers correct use, inspection, retirement criteria and operator responsibilities. AS 4497.1-1997 Round slings — synthetic fibre (Specification). Equivalent design and testing standard for round slings. AS 4497.2-1997 Round slings — synthetic fibre (Care and use). Equivalent care-and-use standard for round slings. Both standards mandate a safety factor of 8:1 — meaning the minimum breaking load (MBL) of the sling is at least 8 times the marked WLL. A 1-tonne sling has an MBL of at least 8 tonnes. This is much higher than the 4:1 or 5:1 typical for chain slings — the higher safety factor compensates for synthetic slings' greater sensitivity to damage and shock loading. Compliant slings supplied in Australia are individually serial-numbered, NATA-tested, and supplied with a test certificate. Look for the AS 1353 (webbing) or AS 4497 (round) reference printed on the sewn-in tag along with the manufacturer name, WLL, length, serial number, and date of manufacture. If any of those data points is missing or illegible, the sling is out of service until re-certified by a competent person. For the broader WLL/SWL/MBL framework — what each acronym means and how they relate — see our SWL meaning explainer. The colour-code chart — WLL by jacket colour One of the most-cited features of synthetic slings is the standardised colour code. Every round sling jacket and every webbing sling label uses the same colour-by-WLL scheme across AU and global markets, harmonised with EN 1492 (the European equivalent). At a glance, an experienced rigger reads the WLL off the colour without picking the sling up. Jacket colour WLL Common uses Violet 1 tonne Light-duty workshop, hand tools, small assemblies, test rigs Green 2 tonnes General workshop and trade work — the most-used WLL in AU industry Yellow 3 tonnes Maintenance lifts, mechanical assemblies, structural fabrications Grey 4 tonnes Heavier maintenance, light structural steel, machinery transport Red 5 tonnes Structural steel, large machinery, motors and gearboxes Brown 6 tonnes Pipe sections, vessels, heavy mechanical assemblies Blue 8 tonnes Modular construction, structural sections, transformers Orange 10 tonnes and above Heavy industrial — pre-cast panels, transformers, vessels, modular plant For higher capacities (12T, 15T, 20T, 30T+) the orange code continues, with the WLL printed on the tag. The Beaver Jumbo and Mega Round Sling ranges cover 6T to 50T+ in orange jackets, with the precise WLL on the tag. Critical: the colour is a starting point, not a substitute for reading the tag. Always confirm the WLL by reading the sewn-in tag before the lift. A jacket that's been replaced (it happens with re-jacketed slings on rare occasions) or a tag that's been bleached by UV may not match. The tag is the legal document; the colour is a fast cross-check. Hitch types — vertical, choker, basket The same sling rated to 2 tonnes can be safely loaded to anything from 1.6 tonnes to 4 tonnes depending on how you rig it. Understanding the three hitch types and their derating factors is the difference between a safe lift and an overload. Vertical hitch (1.0×). The sling hangs straight down from the hook with both eyes attached to a single load point or a shackle. WLL is the rated value. This is the baseline. Choker hitch (0.8×). The sling is wrapped around the load, then one eye is passed through the other, forming a self-tightening loop. The sling tightens on itself as the load is lifted. WLL drops to 80% of vertical because of the bend angle at the choke point. The forum consensus from r/Rigging and r/cranes is consistent: "if you choke, multiply by 0.8." Basket hitch (2.0×, parallel legs). The sling passes under or around the load, with both eyes attached up at the hook. The load hangs in a U or "basket" formed by the sling. With both legs vertical (parallel), capacity doubles to 200% — both legs share the load. As the basket angles spread (the legs come apart at the top), capacity derates by the sling-angle factor — the same maths as a 2-leg sling. Hitch WLL multiplier Notes Vertical (single line) 1.0× Baseline. Both eyes attached to a single point or shackle. Choker 0.80× Self-tightening loop around the load. Sharp bend at the choke reduces WLL. Basket — parallel legs (both vertical) 2.0× Both legs share load equally. Maximum capacity for a single sling. Basket — 60° from horizontal 1.732× 2 × sin(60°) = 1.732. Standard rigging angle. Basket — 45° from horizontal 1.414× 2 × sin(45°) = 1.414. Wide spread — confirm sling length is sufficient. Basket — 30° from horizontal 1.0× 2 × sin(30°) = 1.0. Same as a single vertical line — and not recommended. The rule riggers live by: 60° from horizontal is the practical minimum. Below 60° (more horizontal sling angle), capacity loss is severe and side loads on attachment points climb fast. Below 45° you've lost more than 30% of capacity and you're applying significant inward force on the lifting points. Below 30° you've thrown away half the capacity and the geometry is dangerous. For more on sling angle deration and the 60° rule, see our Chain Sling Guide sling-angle section — the maths is identical for chain, wire rope and synthetic slings. Reading the sling tag — what it tells you Every compliant sling has a sewn-in tag. The tag contains the legally-required information for use: WLL in vertical, choker and basket configurations — three numbers on a single tag. Vertical is the baseline; choker is 0.80× the vertical; basket is 2.0× the vertical (parallel legs). Manufacturer name and country of origin. AS 1353 (webbing) or AS 4497 (round) reference. Serial number. Ties the sling to its individual test certificate. Length. Usually printed in metres. Date of manufacture. Used to track service life — 10 years is the typical hard limit, less in harsh environments. Material code. "PES" = polyester (the AU industrial standard). "PA" = polyamide (nylon). "PP" = polypropylene (rare, lower temperature limit). If any of those data points is missing or illegible, the sling is out of service until re-certified. Bleached, faded, ripped, or covered tags are common failure modes — UV exposure, paint over-spray, abrasion, and chemical contact all kill tags. Replacement tags are available from manufacturers but must be authorised — a sling without traceability cannot be used safely on a regulated site. Pre-use inspection — the hand-feel rule The inspection rule for synthetic slings is different from chain or wire rope: visual inspection alone is not enough. The forum consensus from professional riggers is consistent — you must hand-feel the entire length of the sling for each pre-use check. Run the sling through your gloved hands, feeling for: Cuts in the webbing or jacket. Any cut that severs even a single fibre means retire — the load-bearing yarns may be damaged below. Abrasion that's reduced webbing thickness. Significant fluffing, fuzz or fibre loss = retire. Heat damage. Brittle, hard, glossy patches indicate heat exposure (welding splatter, hot work nearby). Polyester degrades from about 100°C; melted polyester is brittle and weak. Chemical attack. Stiff, discoloured, or chalky patches indicate acid, alkali, or solvent exposure. UV damage. Sun-bleached, faded, brittle webbing = the polyester chains have broken down. Common on slings stored on outdoor racks. Stitch damage. Broken, missing, or pulled stitches at the eye joins. Stitch failure is the most common catastrophic failure mode. Knots or kinks. A kinked synthetic sling is permanently damaged. Knots reduce capacity to ~50% and damage the fibres. Internal core damage on round slings. If the jacket is intact but you can feel a discontinuity, lump, or thinning in the core through the jacket, retire the sling. Inspection level Frequency By whom Pre-use visual + hand-feel Every lift Operator (dogger or competent person) Periodic thorough inspection Every 3 months (light duty) to every month (heavy duty) Competent person, recorded Annual NATA proof-test Annually (most regulated sites) or per the company lifting register NATA-accredited test facility Retirement criteria — when to scrap a sling Synthetic slings retire on damage, not on age alone (though most manufacturers specify a 10-year hard maximum from date of manufacture, even on slings that look unused). The conditions that mandate immediate retirement: Any cut through the webbing or jacket exposing core fibres. Significant abrasion with visible fibre loss. Heat or chemical damage — brittle, hard, discoloured, or chalky patches. UV degradation — fading and brittleness. Knots or kinks — permanent fibre damage even after the kink is straightened. Broken or missing stitches at the eyes. Tag illegibility — no traceable WLL or serial number. Shock load — any sling that's been shock-loaded (sudden drop, snatch lift, severe arrest) must be inspected by a competent person before further use; the hidden core damage cannot be ruled out by visual inspection alone. Overload — any sling loaded above its WLL is condemned. The UK LOLER inspector rule applies as a principle: a sling that's been at twice its rated load is finished. Manufacturer's stated service-life limit reached (typically 10 years from manufacture). Cut a retired sling in half so it can't be returned to service by mistake, and remove the tag. This is standard AU rigging practice and is required under several site-specific lifting registers. Edge protection — sleeves, corner protectors, burlap Synthetic slings die fast at sharp edges. Steel plate edges, casting fettle marks, machined corners, even rough timber edges can cut a sling in a single lift. Edge protection is the standard mitigation. Three options: Slip-on protector sleeves. Heavy-duty leather, Cordura, or polyurethane sleeves that slide over the sling at the contact point. Reusable, fast to fit, cover the full circumference. Corner protectors. Rigid plastic or steel V-blocks that sit between the sling and the load corner. Better for sharp 90° angles where a sleeve would still be cut at the apex. Disposable wraps — burlap, hessian, cardboard, even old timber offcuts. Common on field jobs where dedicated protectors aren't to hand. Forum-validated insight (r/Rigging): The reason riggers wrap burlap or hessian under a sling at a contact point isn't softening — it's increasing the bend radius. Polyester slings have a manufacturer-specified minimum bend radius for full WLL. A sharp edge with no protection forces the bend below the minimum and damages the fibres immediately. Burlap or a similar wrap distributes the bend across a larger radius and keeps the sling within spec. Most riggers don't articulate this; the experienced ones do. Sling connectors — terminal fittings and hooks Synthetic slings often need a hook, master link, or connector at the eye end. AIMS stocks two common Yoke products plus the Austlift G80 connector: Yoke G100 Webbing Sling Connector 8mm — Grade 100 alloy steel connector designed to attach a chain hook or master link to a webbing sling eye without damaging the webbing. Yoke G80 Round Sling Connector — designed for the rounded geometry of a round sling, prevents jacket abrasion at the connector. Austlift G80 Type WL Webbing Sling Connector — Grade 80 alloy steel, specifically shaped for webbing sling eye geometry. The wrong connector kills slings. A sharp-edged shackle pin pulled directly through a webbing sling eye creates a stress concentration and can cut the webbing under load. A purpose-designed sling connector spreads the load across a wider, smoother contact area. For shackles attached directly to sling eyes, see our Bow Shackle and D-Shackle Guide — the pin-orientation rules apply equally to chain, wire and synthetic slings. 1-ply, 2-ply, and 4-ply webbing — what the difference means Webbing slings are constructed in single, double, or quadruple plies of webbing layered together at sewn eyes. Same webbing material, same polyester, same AS 1353 — but different stack-up. Construction Characteristics Best for 1-ply (single layer) Lightest, most flexible, longest at given WLL, easiest to inspect — abrasion shows immediately on the single layer Workshop and trade work, clean environments, frequent re-rigging, Beaver 1-Ply 2-ply (double layer) Mid-weight, mid-flexibility, more abrasion resistance than 1-ply at same WLL, shorter overall length General industrial duty, mixed-environment work, Beaver 2-Ply 4-ply (quadruple layer) Heaviest, stiffest, shortest at given WLL, most abrasion-resistant — significantly more durable in harsh environments Heavy industrial, high-cycle hire fleet, abrasive environments, Beaver 4-Ply For the same WLL, a 4-ply sling has roughly 4× the cross-section of a 1-ply sling — making it shorter, stiffer, and tougher on the wear faces. For a workshop wanting the lightest, most flexible 1-tonne sling, the 1-ply is the choice. For a hire fleet or a high-abrasion environment, the 4-ply pays for itself in service life. AIMS synthetic sling range AIMS stocks 100+ webbing and round sling SKUs across the four AU brands most riggers trust: Austlift — AS 1353 / AS 4497 compliant, 100% polyester yarn, individual test certificates, full 1T to 30T+ range. AIMS stocks the entire core Austlift round sling series (1T, 2T, 3T, 4T, 5T at standard lengths 0.5m to 8m) plus the heavy-duty Austlift Durabone Round Sling for high-abrasion work and the G80 Type WL Webbing Sling Connector. Beaver — premium AU rigging brand. 1-Ply, 2-Ply and 4-Ply flat webbing slings, the Flat Endless Sling for choker and basket work without eye joins, plus the Mega Round Sling (6T to 8T) and Jumbo Round Sling (30T to 50T+) for heavy industrial lifts. Garrick Herbert — AU manufacturer with the Garrick Flat Webbing Sling (1T to 10T+, AS 1353, 8:1 safety factor) and the Garrick Round Sling 5-tonne (Red). Yoke — Grade 80 and Grade 100 connectors. The G100 Webbing Sling Connector and the G80 Round Sling Connector are the trusted hardware for connecting slings to chain hooks, master links and shackle assemblies. Browse the full rigging and lifting slings range — 66+ products covering chain slings, webbing slings, round slings, wire rope slings and accessories. Need help sizing? Call us on (02) 9773 0122 or contact our team. Specialty slings — drum, pipe, jumbo Beyond the standard webbing and round-sling ranges, several specialty types fill specific applications: Drum slings — purpose-shaped slings for lifting 200L drums vertically. Cradle the drum body without crushing the chime. CPC $110 on "drum lifting sling" — these are real-world specialty products. Pipe slings — wider webbing or larger-diameter round slings rated for cylindrical loads with even load distribution. Endless slings — round slings or sewn-endless webbing slings (no eye joins). The Beaver Flat Endless Sling is the AU example. Useful for choker and basket hitches where eye joins would interfere. Jumbo round slings — heavy-duty industrial round slings rated 30T, 50T, 100T+. Used in modular construction, transformer lifts, vessel placement, and pre-cast panel handling. The Beaver Jumbo Round Sling series covers this end of the market. Anti-static slings — for environments where electrostatic discharge is a hazard. Specialised order, typically polypropylene rather than standard polyester. For specialty configurations not in the standard catalogue, contact us — most can be sourced or fabricated to AS 1353 / AS 4497 specifications with NATA test certification. Common mistakes From hundreds of forum threads and AU rigging incident reports, the same handful of mistakes show up repeatedly. Every one of them is preventable. Mistake Why it fails Fix Knotting a too-long sling to shorten it Knots reduce sling capacity to ~50% and damage fibres permanently. The kink point becomes the failure point. Use a shorter sling, doubled-up sling, or a chain shortening clutch. Using a sling around a sharp edge with no protection Bend radius drops below manufacturer spec; fibres cut under load. Slip-on sleeve, corner protector, or wrap (burlap, hessian, cardboard). Choker hitch loaded at vertical WLL (forgotten 0.8× derate) Effective WLL is 80% of vertical. Loading to 100% is a 25% overload. Read the tag — vertical, choker and basket WLLs are all printed. Basket hitch with sling angle below 60° (legs too horizontal) Severe WLL deration plus inward side-load on attachment points. Use a longer sling, two slings, or a spreader/lifting beam. Soft-on-soft rigging (synthetic against synthetic) Mutual abrasion at the contact point under load. Both slings damaged in one lift. Insert a master link, hook or shackle between the two synthetic slings. Sharp-edged shackle pin through webbing sling eye Stress concentration at the pin contact area. Webbing cuts under load. Use a sling connector (Yoke G100, Austlift G80) sized for the sling format. Returning a shock-loaded sling to service Internal core damage on round slings cannot be ruled out by visual inspection. Out of service until a competent person inspects, or scrap. Storing slings on outdoor racks in direct sunlight UV breaks down polyester chains. Sling becomes brittle with reduced WLL. Store indoors, on hooks or hangers, away from direct sunlight, chemicals and damp. Selection checklist + how to order A practical pre-order checklist: Know the load weight — and the WLL needed at the hitch type you'll use (vertical / choker / basket). Choose webbing or round — flat surface vs irregular load, abrasion environment vs surface protection. Pick the WLL by colour — violet 1T, green 2T, yellow 3T, grey 4T, red 5T, brown 6T, blue 8T, orange 10T+. Pick the length — long enough for the hitch geometry without forcing knots or overly horizontal angles. Standard lengths 0.5m, 1m, 1.5m, 2m, 3m, 4m, 6m, 8m. Pick the ply count (webbing only) — 1-ply for clean, 2-ply for general industrial, 4-ply for heavy duty / abrasive. Confirm AS 1353 (webbing) or AS 4497 (round) — every AIMS-supplied sling is compliant and individually serial-numbered. Plan edge protection — sleeves, corner protectors or wraps if there are sharp edges in the load path. Check operator licensing — dogging or rigging licence as required by the WHS framework. Slinging loads is dogging activity under CPCCLDG3001. For multi-leg sling assemblies, see our Chain Sling Guide — the multi-leg geometry rules apply equally to synthetic configurations. For complete rigging context including shackles and connection hardware, see our Wire Rope, Slings & Rigging Guide and Bow Shackle Guide. For overhead lifting points, see our Beam Clamp Guide. Frequently Asked Questions What is a webbing sling used for? A webbing sling is a flexible polyester lifting strap used to attach a load to a chain block, electric hoist, crane hook, or other lifting device. Common uses include lifting machinery for transport, suspending loads from beam clamps for maintenance work, supporting fabricated assemblies during welding, and general workshop and trade lifting where a chain sling would be too heavy or damage the load surface. What is the difference between a round sling and a webbing sling? A webbing sling is flat, ribbon-like polyester webbing with sewn loop eyes at each end. A round sling is a continuous polyester core inside a woven jacket — no visible eyes, just an endless loop. Webbing slings have visible damage modes (abrasion, cuts, broken stitches show clearly); round slings hide internal damage under the jacket and are gentler on finished surfaces. Both are AS-compliant with an 8:1 safety factor. What is the safety factor of synthetic slings in Australia? AS 1353 (webbing) and AS 4497 (round) both mandate an 8:1 safety factor — the minimum breaking load (MBL) of the sling is at least 8 times the marked Working Load Limit (WLL). A 1-tonne sling has an MBL of at least 8 tonnes. The 8:1 factor is higher than the 4:1 typical for chain slings, reflecting synthetic slings' greater sensitivity to damage. What does AS 1353 cover? AS 1353 covers flat synthetic-webbing slings in two parts: AS 1353.1-1997 is the product specification (design, materials, construction, marking, testing); AS 1353.2-1997 is care and use (correct use, inspection, retirement criteria, operator responsibilities). Compliant webbing slings sold in Australia are individually serial-numbered with a sewn-in tag carrying the AS 1353 reference, manufacturer name, WLL, length and date of manufacture. What does AS 4497 cover? AS 4497 covers synthetic round slings in two parts: AS 4497.1-1997 is the product specification; AS 4497.2-1997 is care and use. AS 4497 is the round-sling equivalent of AS 1353 — same 8:1 safety factor, same colour-code system, same care and inspection framework. The two standards are usually treated together in AU rigging documentation. What is the colour code for lifting slings in Australia? The AU/NZ colour code matches the global EN 1492 system: 1-tonne violet, 2-tonne green, 3-tonne yellow, 4-tonne grey, 5-tonne red, 6-tonne brown, 8-tonne blue, 10-tonne and above orange. The colour identifies the WLL at a glance, but the legal WLL is on the sewn-in tag and must always be read before the lift. Bleached or replaced jackets can mismatch the original WLL. What is a 2-tonne sling colour? Green. Across both webbing slings and round slings in Australia, a 2-tonne WLL is marked with green webbing or a green jacket. This is the most-used WLL in AU industrial work and the colour most operators recognise immediately. How does the choker hitch reduce sling capacity? A choker hitch wraps the sling around the load and passes one eye through the other to form a self-tightening loop. The sling bends sharply at the choke point, creating a stress concentration that reduces effective WLL to 80% of the vertical rating (multiply vertical WLL by 0.80). The 0.8× factor is a long-standing rigging industry standard and applies equally to chain, wire rope and synthetic slings. How does the basket hitch increase sling capacity? A basket hitch passes the sling under or around the load with both eyes attached up at the lifting point. With both legs vertical (parallel), the load is shared equally between two lines, doubling effective capacity to 200% of vertical (2.0×). As the basket angles spread (legs come apart at the top), capacity derates by the sling-angle factor. At 60° from horizontal the multiplier is 1.732×; at 45° it's 1.414×; at 30° it's back to 1.0× and the geometry is unsafe. What sling angle puts the least stress on the slings? The closer to vertical, the lower the stress per leg. A two-leg sling at 90° from horizontal (straight vertical legs) puts only the load weight per leg through each sling. At 60° from horizontal, leg load increases to 58% of total per leg. At 45° it's 71% per leg. At 30° it's 100% per leg — each sling is carrying the full load weight even though the lift is shared between two. The AU rigging rule of thumb: 60° from horizontal is the practical minimum. How often should I inspect a webbing or round sling? Pre-use visual and hand-feel inspection before every lift, by the operator. Periodic thorough inspection every month to three months by a competent person, recorded in a lifting register. Annual NATA proof-test by an accredited test facility, or per the company's lifting-equipment register requirements. Most regulated AU sites require quarterly thorough inspection on hire-fleet equipment. When should I retire a synthetic sling? Immediately, on any of these: any cut through the webbing or jacket; significant abrasion with fibre loss; heat or chemical damage (brittle, hard, discoloured patches); UV degradation (faded, brittle); knots or kinks; broken or missing stitches; illegible tag; shock-loaded; overloaded above WLL; or the manufacturer's stated service-life limit (typically 10 years from manufacture). Cut a retired sling in half so it can't be returned to service. Can I keep using a sling with a small cut? No. Any cut through the webbing or jacket exposing the load-bearing fibres mandates immediate retirement. Synthetic slings rely on every fibre being intact to develop their rated capacity. A small cut becomes a large failure under load — the cut is the propagation point. The forum consensus from AU and international rigging communities is unanimous on this. What's the difference between 1-ply, 2-ply and 4-ply webbing slings? The number of layers of webbing stacked at the eye joins. Same polyester material, same AS 1353 compliance, same WLL at given dimensions — but a 1-ply is the lightest and most flexible, a 2-ply is mid-weight and mid-flex, and a 4-ply is the heaviest, stiffest and most abrasion-resistant. Same WLL at higher ply count means a shorter, stiffer, more durable sling. 1-ply for clean workshop work, 2-ply for general industrial, 4-ply for heavy-duty or hire fleet. Are round slings stronger than webbing slings? At equivalent WLL, no — both meet the same 8:1 safety factor. Round slings are typically lighter and more flexible at the same WLL because the polyester core is concentrated rather than spread across a flat webbing. Round slings handle higher capacities at smaller cross-sections — the Beaver Jumbo Round Sling reaches 30T+ in a package that's still hand-handleable. For straight comparison at common WLLs (1T to 10T), the choice between webbing and round is about load shape and surface sensitivity, not strength. Need to identify a thread standard? Our Thread Standards Guide covers BSP, NPT, UNC, UNF, BSW and metric with identification tips. AIMS Industrial stocks lifting chain links — see the full range for trade and industrial use.
Read moreBeam Clamp Guide: WLL Ratings & Steel Beam Sizes
A beam clamp turns an overhead steel beam into a temporary lifting point. Hook one onto an I-beam flange, attach a chain block to the shackle, and you have a 1-tonne to 10-tonne pickup point exactly where you need it — no welding, no drilling, no permanent fixtures. For maintenance fitters, mechanical workshops, riggers and dogmen across Australian industry, the beam clamp is one of the most cost-effective pieces of lifting kit in the toolbox. It's also one of the most misunderstood. The same word — "beam clamp" — is used for at least three different products: lifting beam clamps rated to AS 4991, hanging or suspension clamps for fixed services, and electrical conduit-support clamps that look similar but are not rated for any moving load. Pick the wrong one and you have a workplace incident waiting to happen. This guide covers beam clamps and girder clamps for lifting only — the lifting-rated devices stamped to AS 4991:2004, used with chain blocks, lever blocks, electric hoists and rigging assemblies on building sites, fabrication shops and maintenance workshops. We'll cover the fixed-jaw and universal screw-cam types AIMS stocks (Austlift, Beaver YC, Challenger and Garrick), how to size them for your beam, the side-loading rule that catches people out, beam trolleys, the dogger and rigger licensing context, and where beam clamps fail. Browse our beam clamp range or call (02) 9773 0122 if you need help selecting. What a beam clamp is — and what it isn't A lifting beam clamp grips the lower flange of a structural steel beam and provides a load-rated lifting eye, typically a shackle or D-ring, hanging below. The clamp transfers the load from the chain block, lever block or electric hoist into the beam, and the beam transfers it into the structure. It's a temporary fixture: clamp on, do the lift, unclamp, move on. It's not the same product as the orange threaded-rod beam clamp at the electrical supply house, or the cheap stamped-steel hanger clamp used to suspend conduit, water pipe or HVAC ducts. Those clamps are rated for static dead-loads — the weight of the service hanging from them — and not for the dynamic loads of a moving lift. A common Reddit thread shows an electrician using a threaded-rod beam clamp to suspend a hanging fixture; the consensus is blunt: that clamp is not rated for lifting use, even though it grips the same flange. The simple test: a lifting-rated beam clamp will be stamped with a Working Load Limit (WLL) in tonnes or kilograms, the standard it complies with (AS 4991 in Australia), the manufacturer name, a serial number, and the beam-flange thickness or width range it's certified for. If the only marking on a clamp is a thread size like "M12" or a generic max-load figure, it's a hanger clamp and should never go anywhere near a chain block. Warning — never improvise a lifting point. A pallet-puller, a piece of all-thread, an angle-iron offcut welded to the flange, or an unmarked clamp from the back of the shed is not a beam clamp. If the device is not stamped with a WLL and an Australian Standards reference, it does not get used to lift a load — full stop. Improvised or undocumented lifting attachments are one of the most common findings in NSW Resources falling-object reports. Beam clamp vs girder clamp — terminology "Beam clamp" and "girder clamp" describe the same product. The NSW Government dogging glossary uses "girder clamp" as the formal term, defining it as "an appliance designed to be fixed to the lower flange of a beam." Australian suppliers — Austlift, Beaver, Challenger, Garrick Herbert, Bullivants, Ranger Lifting — use the terms interchangeably across their catalogues. Search volume on Google AU is roughly three times higher for "beam clamp" than for "girder clamp," which is why this article leads with the more common term. What does matter is the distinction between a lifting beam clamp and a hanging or suspension beam clamp. A lifting clamp is rated for moving loads under a chain block or hoist — it has a shackle or fixed lifting eye, complies with AS 4991, and will be stamped with a WLL in lifting service. A hanging clamp is rated for static suspension only — fixed services, lighting bars, ductwork, conduit. Ratings on hanging clamps are a fraction of the equivalent lifting capacity, and the design assumes the load is centred and unmoving. Riley makes a Super Clamp model that bridges both applications, but it's the exception. Most clamps do one job, and using a hanging clamp under a chain block is a clear breach of the manufacturer's instructions. The four main types of beam clamp Lifting beam clamps come in four main configurations. Picking the right one is the first decision. Type How it works Best for AIMS example Universal screw-cam (adjustable) A screw thread plus a cam jaw. Tighten the screw to draw the cam against the flange. Wide adjustment range across many flange widths. Workshops with mixed beam sizes, hire fleets, general maintenance work. The most common type in AU industry. Austlift GC01, Beaver YC Fixed jaw with shackle Fixed jaw geometry sized to a specific flange range. Pre-fitted shackle for sling attachment. Faster on/off than screw type. High-cycle work where every lift uses the same beam. Faster to fit and remove than screw type. Challenger Beam trolley + girder clamp combo Wheels run on the lower flange. Hoist hangs from the trolley. The load travels along the beam. Workshop bays, machine shop pickup areas, anywhere the load needs to traverse the length of a beam. Beaver YC trolley clamp, Austlift trolley Suspension / hanging clamp Designed for static suspension. Lower WLL than lifting equivalents. Often no shackle — direct chain or wire attachment. Permanently or semi-permanently suspended services — lighting bars, conduit runs, mechanical services. NOT lifting. Specialist supply only — not stocked at AIMS for general lifting. For most general workshop and maintenance work the universal screw-cam type is the right choice. The 1-tonne Austlift GC01 at around $60 covers 75–220mm flanges and is rated to AS 4991 — most workshops have one in the lifting cabinet. Step up to the Beaver YC industrial range when you need a wider 90–320mm flange range, higher capacity (up to 10t), or premium-tier traceability. All beam clamps stocked at AIMS are AS/NZS load-rated with serial numbers and individual test certificates. The workhorse — Austlift GC01 deep-dive The Austlift Girder Clamp Model GC01 is the most common universal screw-cam clamp in Australian workshops. It's available across five WLL ratings — 1, 2, 3, 5 and 10 tonne — and covers a flange range of 75–220mm on the 1-tonne and progressively larger ranges on the higher-capacity sizes. Construction is alloy steel rated for use on flange materials up to 37 HRC hardness, individually serial-numbered with test certificates and a user manual supplied per unit. AS/NZS load-rated. The Austlift GC01 user manual states the device is "for vertical lift only" — meaning the load line must hang plumb beneath the clamp's lifting eye. This is the rule that catches people out. We'll cover the side-load problem and what it means for sling angles in the WLL section below. Austlift also supplies the Girder Clamp Black in 2-tonne capacity at around $76 — same operating principle, alternative finish. Either model is fit for general workshop and maintenance work where flange ranges sit in the typical AU structural steel sections (75–220mm covers most universal beam (UB) and universal column (UC) flanges in AS/NZS 3679.1 hot-rolled stock). Premium tier — Beaver YC industrial range The Beaver YC Industrial Girder Clamp is the premium-tier option AIMS stocks. WLL ratings span 1 to 10 tonne with a wider 90–320mm flange range than the equivalent Austlift unit, drop-forged alloy steel construction, AS 4991 compliance, and individual test certificates. The Beaver YC sits at a higher price point ($657 for the 1t at the time of writing) but it's the choice when: You're working on heavier structural sections — 250UB, 310UB, 360UB, 410UB and larger — where the standard 220mm Austlift jaw won't open wide enough. You need premium traceability for client documentation, compliance audits or principal-contractor tickets. You're running a hire fleet where build quality and inspection life matter against per-unit replacement cost. Beaver also supplies the YC Trolley & Girder Clamp combo — a 2000kg WLL trolley clamp with 72–200mm flange range that runs along the beam on rollers. Use the trolley combo where the load needs to traverse, not just lift in a single spot. Mid-budget — Challenger and Garrick Between the Austlift and Beaver tiers, AIMS stocks two mid-budget options. The Challenger Girder Beam Clamp covers the 1000–10,000kg WLL range at around $202 — solid working capacity, AS-compliant, suited to general workshop and trade applications where you want better than entry-level without paying the Beaver premium. Garrick Girder Clamp 10T at around $279 is purpose-built for the 10-tonne heavy-duty bracket — when capacity is the deciding spec, Garrick competes well against the equivalent Beaver YC 10t. For occasional workshop use, the Austlift GC01 is hard to beat on price-to-capability. For frequent lifting on a hire fleet or principal-contractor sites, the Beaver YC is the safe choice. Challenger and Garrick fill the middle. View the full beam clamp range to compare specs side by side. Beam range and flange thickness — sizing without shims Every beam clamp is rated for a specific flange-width range and a specific flange-thickness range. Get either wrong and the clamp either won't seat properly or will sit at the limit of its design envelope, where the safety margin disappears. The flange-width range is the dimension across the bottom of the I-beam — typically 75mm to 320mm in AIMS-stocked clamps, covering most structural sections in AS/NZS 3679.1. Australian universal beams (UB) and universal columns (UC) span 100mm to 410mm flange widths, so a single clamp won't fit every beam in a typical workshop. Mismatched sizing is a real-world problem: as one MEP engineer noted on Reddit, "even if you order the right size half the time the supply house sends you the wrong one." The mistake is to use a washer or steel plate as a shim to make a too-large clamp fit. That changes the load path, can twist the jaw, and is not approved by any manufacturer. AU section Flange width Suitable AIMS clamp 100UB / 100UC / 150UB 100–155mm Austlift GC01 1–3t (75–220mm) 200UB / 200UC / 250UB 133–204mm Austlift GC01 or Beaver YC 1–3t 310UB / 310UC 165–305mm Beaver YC 5t (90–320mm) 360UB / 410UB 170–235mm Beaver YC 5–10t If you're not sure of the flange dimensions, measure with a ruler or vernier caliper before you order. Drawing nominations like "200UB" don't tell you the actual flange width — a 200UB18.2 has a 99mm flange while a 200UB29.8 has a 134mm flange. Measure first. WLL, side-load deration and the sling-angle problem Every beam clamp is rated for vertical loading only unless the manufacturer explicitly states otherwise. The Austlift GC01 user manual is unambiguous: "Can only be used on vertical lift." Beaver, Challenger and Garrick clamps in the AIMS range are the same — the WLL stamped on the clamp applies when the load line hangs plumb beneath the lifting eye. Pull the load off-vertical and you're operating outside the rating. The two-leg sling trap. The single most common dangerous misuse of a beam clamp in Australian workshops is using one clamp as the suspension point for a two-leg or four-leg sling assembly. Each sling leg pulls at an angle to vertical. Those off-vertical components apply a side load to the clamp jaw — the clamp wasn't designed for it, the WLL drops dramatically, and the failure mode is the clamp slipping or rotating off the flange under load. The correct solution is a lifting beam (spreader bar) hung below the clamp, with the slings attached to the beam, not the clamp. A few specialist clamps — Tiger BCU and similar — are rated for loading at angles up to 90 degrees from vertical without deration. These are the exceptions. Unless your clamp's data plate explicitly says it can be loaded off-vertical, treat it as vertical-only. If a load can't be slung vertically beneath a single beam clamp, the standard AU rigging solution is a lifting beam (spreader bar) hung from the clamp via a single vertical chain or wire-rope sling. The lifting beam has multiple pickup points along its length, and the slings to the load attach to the beam. The clamp now sees a single vertical line — exactly what it's rated for. We cover spreader-beam selection in the lifting beam section below. Australian standards: AS 4991 + AS 1418.2 Two Australian Standards govern beam clamps and beam trolleys: AS 4991:2004 Lifting devices. The primary compliance standard for beam clamps used in lifting service. Covers design, manufacture, testing, marking and inspection of below-the-hook lifting devices including girder clamps, plate clamps and lifting magnets. Every lifting beam clamp sold in Australia for site or workshop use should carry an AS 4991 stamp. AS 1418.2 Cranes — Serial-hoists and beam trolleys. Covers chain blocks, lever blocks, electric hoists and the beam trolleys they run on. The trolley element of a girder-clamp-trolley combo is built to AS 1418.2, while the clamp portion is built to AS 4991. European-only EN 13155 stamping is not equivalent to AS 4991. AU principal-contractor sites typically reject lifting equipment that carries only an EN 13155 mark — the requirement is AS 4991 compliance backed by a current test certificate. Every clamp AIMS sells is supplied with an individual test certificate and a unique serial number. Keep the certificate with the equipment register; the serial number ties the certificate to the physical clamp during inspection. Beam trolleys — push, geared and motorised A beam trolley turns a fixed pickup point into a moving one. The trolley wheels run on the lower flange of the beam, the hoist hangs beneath, and the load travels along the length of the beam — useful in workshops where you need to lift a load off a truck and traverse it across to a workstation, or in fabrication bays where you need to move an assembly along a production line. Three types are common: Push (manual) trolleys — you push the load along the beam by hand. Suitable for lighter loads (typically up to 5t) and short traverses. The Challenger Push Beam Trolley at 500–5000kg covers most workshop applications. Cheapest option, fastest install, no maintenance beyond keeping the wheels clean. Geared trolleys — a hand chain drives the wheels through a gear set. Better control on heavier loads, easier on the operator over longer traverses. Step up from push trolley when load weight or distance justifies it. Electric trolleys — motor-driven, controlled from a pendant. Production-line applications, long traverses, high cycle rates. The Austlift Adjustable Beam Trolley in aluminium alloy and stainless steel is a height-safety-rated trolley running at 23kN — a different product class from a lifting trolley but worth knowing exists for the right application. The Beaver YC Trolley & Girder Clamp combo integrates the clamp and trolley into a single unit that can be used static (clamped to one spot) or rolling along the beam. Pair the trolley with a chain block, lever block or electric hoist sized for the load. The trolley capacity must equal or exceed the chain block capacity — a 2-tonne trolley with a 3-tonne chain block is not a 3-tonne system, it's a 2-tonne system. Lifting beam vs spreader beam vs beam clamp — the three "beams" People searching for "beam clamp" sometimes mean "lifting beam," and the two are different products. Here's the distinction: Beam clamp / girder clamp — clamps onto a structural beam to provide a lifting point. The structural beam is part of the building. The beam clamp is the temporary attachment. Lifting beam — a rated steel beam below the hoist hook, used to spread a load across multiple pickup points. The lifting beam is part of the rigging assembly, not the building. Spreader bar — similar to a lifting beam but loaded in compression rather than bending. The slings to the load run from the spreader bar's ends back up to a single hook above. Spreader bars are common for lifting wide loads where direct chain-block attachment would create excessive sling angles. If the load won't slung directly under a single beam clamp without exceeding sling angle limits, the correct fix is a lifting beam hung from the clamp on a single vertical sling. The clamp sees a vertical pull; the lifting beam handles the multiple pickup points. We don't currently stock standard off-the-shelf lifting beams — for custom spreader and lifting-beam assemblies, contact us at our beam clamp range or call (02) 9773 0122. Inspection, lock pins and pre-use checks Beam clamps live a hard life. They get dropped, dragged across concrete, left in the rain, and chucked back in the gear cage at end of shift. Pre-use inspection takes 60 seconds and catches the failures before they happen. Check What you're looking for Data plate / WLL stamp Legible WLL, AS 4991, manufacturer name, serial number. If you can't read it, the clamp is out of service until re-tagged. Jaw faces No mushrooming, no chipped corners, no visible cracks. Wear marks are normal; structural damage is not. Screw and cam (universal type) Screw turns smoothly through full travel. No bent threads, no seized pivot. Cam jaw moves freely. Shackle / lifting eye Pin secure, no elongation, no obvious deformation. Eye not opened up. Test certificate currency Test/inspection certificate within 12 months for general lifting use, 6 months for high-cycle environments. Many AU sites require quarterly inspection on hire-fleet equipment. Beam fit before load Clamp seated correctly, screw fully tightened, jaw in full contact with the flange. Visual check before applying load. Event riggers in theatrical and concert work commonly add a redundant safety wire around the beam through the clamp's lifting eye — the suspended-load community standard for over-audience rigging. It's not required by manufacturer instruction for normal industrial lifting, but it's standard practice in entertainment rigging and worth understanding if you cross between industrial and event work. AU dogging and rigging context — who can use a beam clamp Lifting work in Australia is regulated under the WHS framework and the high-risk work licensing system. A beam clamp used to lift a load is dogging work — slinging, directing and inspecting loads. The relevant high-risk work licences are: CPCCLDG3001 Dogging — required for slinging loads, directing crane operators, and using lifting attachments including beam clamps. The minimum licence for most beam clamp lifting work. CPCCLRG3001 Basic Rigging — covers more complex slinging, the use of structural lifts, and the erection of pre-cast and structural steel members. CPCCLRG3002 Intermediate Rigging and CPCCLRG3003 Advanced Rigging — progressively more complex applications. The NSW Government dogging glossary defines a dogger as "a person qualified to sling, inspect and direct loads." The licence is held by the individual, not the workplace. On a regulated site, the person attaching a beam clamp to a beam, fitting the chain block, hooking up the load and giving the lift signal must hold at minimum a current dogging licence. Owner-operators in private workshops are not exempt from the WHS framework — only the licence-holder requirement varies between jurisdictions and work types. If you're not licensed, the practical rules are: get the work done by a licensed dogger, operate within the manufacturer's instructions for non-occupational use (where applicable), or get the licence — short-course training is widely available across Australia. Where beam clamps fail — forum-validated failure modes Talk to AU dogmen and rigger forums and a small set of failure modes shows up over and over. The good news: every one of them is preventable. Failure mode Cause Prevention Clamp slips off the flange Sling angle exceeded WLL deration, side load applied to a vertical-only clamp, screw not fully tightened. Vertical lift only unless rated otherwise. Check screw tension after load is taken up. Use a lifting beam for multi-leg slings. Clamp jaw deforms / opens up under load Overloaded — clamp WLL exceeded. Often a misjudged load weight. Know the load weight before the lift. Add 25% margin on uncertain loads. WLL is not a "guideline." Catastrophic snap of unrated import clamp Cheap unstamped clamp from a non-specialist supplier. No AS 4991 mark, no serial number, no test certificate. Buy from rigging-equipment specialists. AS 4991 stamp + serial number + cert is non-negotiable for lifting use. Wrong flange thickness — clamp won't seat Flange too thick for the clamp's range, or operator shimmed a too-large clamp. Measure the flange before ordering. Never shim a beam clamp. Bull-rigging on top flange (not bottom) Operator clamps on top of the flange to "pull up" rather than below it. Not a rated configuration. Beam clamps are for the lower flange only unless the manufacturer's documentation specifically approves top-flange use. Beam clamp on a non-load-bearing beam Clamp attached to a purlin, lintel, secondary beam or non-structural feature. The beam being clamped to must be capable of carrying the lift load. Check structural drawings or ask an engineer if unsure. NSW Resources falling-object reports cite this as a recurring issue. Threaded-rod clamp used for lifting An electrical conduit-support beam clamp (cheap stamped, threaded-rod attachment) used under a chain block. Check for AS 4991 stamp and a WLL rating in tonnes before any lifting use. If unsure, the clamp does not lift. Damaged clamp returned to service Clamp dropped, jaw chipped or screw bent — used anyway because "it still works." Pre-use inspection mandatory. Damaged clamps go out of service until inspected by a competent person. Beam clamps for scaffolding leg support A specific use case worth flagging: girder clamps used to support scaffold legs from a steel beam. The rule from r/Scaffolding and AU scaffolding industry practice: clamps must be used in pairs, one facing the other, with a check 90 fitting to prevent slip. Single-clamp attachment is not approved for scaffold leg support — the load path under typical scaffold loading produces a slip mode that single clamps don't resist. Scaffolding under AS 1576 has its own load-rating, inspection and competency requirements. Beam clamp use in this context is part of the scaffold design; a scaffolder or scaffolding inspector signs off the configuration. If you're working a maintenance or fabrication site and a scaffold leg is hanging off a single beam clamp, that's a finding for the site safety officer, not a normal configuration. AIMS beam clamp range AIMS stocks lifting-rated beam clamps and trolleys from the four AU brands most workshops trust: Austlift Girder Clamp Model GC01 — universal screw-cam, 1–10t, 75–220mm range, AS/NZS load-rated, individual test certificate. The workhorse choice for general workshop and maintenance work. Austlift Girder Clamp Black — 2-tonne universal model, alternative finish. Beaver YC Industrial Girder Clamp — 1–10t, 90–320mm wider flange range, drop-forged alloy steel, AS 4991 compliant, premium tier. Challenger Girder Beam Clamp — 1000–10,000kg WLL, mid-tier price-to-capability. Garrick Girder Clamp 10T — heavy-duty 10-tonne specialist. For traversing applications: Beaver YC Trolley & Girder Clamp combo — 2000kg WLL trolley clamp, 72–200mm flange range. Combines clamp and rolling trolley in a single unit. Austlift Girder Clamp Trolley — 1-tonne trolley model. Challenger Push Beam Trolley — 500–5000kg push trolley for paired use with a beam clamp or running on a beam directly. Browse the full beam clamp collection or pair with a chain block, lever block or electric hoist for a complete temporary lifting setup. Need help sizing for your beam? Call us on (02) 9773 0122 or contact our team. Selection checklist + common mistakes A practical checklist before you order: Measure the beam flange — width and thickness. Don't guess from the section nomination. Know the load weight — and add a margin for uncertainty. The clamp WLL is the maximum, not the target. Vertical lift only — unless you're using a clamp explicitly rated for off-vertical loading. One clamp = one vertical line — multi-leg slings need a lifting beam below the clamp. AS 4991 stamp + serial number + test certificate — non-negotiable. No exceptions. Pre-use inspection — data plate legible, jaw clean, screw smooth, shackle pin secure. Beam capacity confirmed — the structural beam can carry the lift load. Engineer's call if unsure. Licensed operator — dogging or rigging licence as required for the work and the jurisdiction. The five most common mistakes — every one of them avoidable: Using a beam clamp as the suspension point for a two-leg or four-leg sling without a lifting beam below. Buying an unrated import clamp because it was cheap. The AS 4991 stamp is what makes it lifting equipment. Shimming a too-large clamp onto a thinner flange with washers or steel offcuts. Using an electrical conduit-support beam clamp under a chain block. Returning a damaged or undocumented clamp to service rather than retiring it. Frequently Asked Questions What is a beam clamp used for? A beam clamp is used to create a temporary lifting point on a structural steel beam. The clamp grips the lower flange of the beam, and a chain block, lever block, electric hoist or sling assembly hangs from the clamp's shackle or lifting eye. Common uses include workshop maintenance lifts, pulling engines from vehicles, lifting machinery for transport, fabrication shop assembly, and on-site mechanical installation work. What is the difference between a beam clamp and a girder clamp? None — they're the same product. "Girder clamp" is the formal term used in the NSW Government dogging glossary and in some manufacturer catalogues. "Beam clamp" is the more common search term and the one most operators use day to day. AIMS stocks all our products under both names; either term will find what you need. Can a beam clamp be used for lifting? A lifting-rated beam clamp can — if it's stamped to AS 4991, has a current test certificate, and is being used within its WLL and flange range. Hanging or suspension beam clamps are not rated for lifting and must not be used under a chain block. Threaded-rod beam clamps for electrical conduit support are not lifting equipment and must not be used to lift a moving load. Are beam clamps and lifting beams the same thing? No. A beam clamp clamps onto a structural beam to provide a temporary lifting point. A lifting beam is a rated steel beam hung below the hoist hook, used to spread a load across multiple pickup points. They're often used together — the lifting beam hangs from the beam clamp on a single vertical sling, and the slings to the load attach to the lifting beam. Can I use a beam clamp on an H-beam or wide flange section? Yes, provided the flange width and thickness fall within the clamp's specified range. H-beams and universal columns (UC) have wider, thicker flanges than universal beams (UB) of the same depth. Measure the actual flange dimensions and check the clamp's data plate against the measurements. The Beaver YC range covers 90–320mm flange widths and handles most AU UB and UC sections. What is the WLL of a beam clamp when used at an angle? For most beam clamps, the answer is zero — they're rated for vertical lift only. The Austlift GC01 manual specifies vertical lift only; Beaver YC, Challenger and Garrick clamps in the AIMS range follow the same rule. A small number of specialist clamps (Tiger BCU, certain Crosby and Riley models) are rated for off-vertical loading at specified angles, but these are the exception. Check the data plate before assuming any side-load capacity. Do beam clamps comply with AS 4991? All lifting-rated beam clamps stocked at AIMS comply with AS 4991:2004 and are supplied with an individual test certificate and a unique serial number. AS 4991 is the primary Australian Standard for below-the-hook lifting devices including girder clamps. EN 13155 (the equivalent European standard) is not accepted as a substitute on most AU principal-contractor sites — AS 4991 stamping is what's required. Can I use one beam clamp to lift a load with a two-leg sling? No — not without a lifting beam between the clamp and the slings. Two or more sling legs from a single clamp apply a side load to the clamp jaw, which is rated for vertical loading only. The fix is a lifting beam (spreader bar) hung from the clamp on a single vertical sling. The slings to the load attach to the lifting beam, and the clamp sees only the vertical line it's rated for. What's the difference between AS 4991 and AS 1418.2? AS 4991:2004 covers the design, testing and marking of lifting devices including beam clamps, plate clamps and lifting magnets. AS 1418.2 covers serial-hoists (chain blocks, lever blocks, electric hoists) and the beam trolleys they run on. A girder-clamp-trolley combo is built to both standards — AS 4991 for the clamp portion, AS 1418.2 for the trolley. Can a hanging or suspension beam clamp be used for lifting? No. Hanging clamps are rated for static dead-loads — fixed services, lighting bars, conduit, ductwork. Their WLL assumes the load is centred and unmoving. Lifting under a chain block applies dynamic loads the clamp wasn't designed for. Always check the data plate: a lifting clamp will be marked AS 4991 with a WLL in tonnes; a hanging clamp will typically be marked with a maximum-load figure only and no AS 4991 reference. Do I need a dogging or rigging licence to use a beam clamp in Australia? For lifting work on a regulated workplace, yes — at minimum a CPCCLDG3001 Dogging licence. Slinging loads, attaching lifting equipment to structural members and directing crane or hoist operators are dogging activities under the WHS framework. More complex lifting (structural steel erection, complex multi-point lifts) requires a Basic, Intermediate or Advanced Rigging licence. Owner-operators in private workshops are not exempt from the WHS framework — only the licence-holder threshold varies. If you're not licensed, get the work done by a licensed dogger or do the short-course training. How do I inspect a beam clamp before use? Five-point check: data plate legible (WLL, AS 4991, serial number visible); jaw faces clean and undamaged (no mushrooming or cracks); screw and cam moving smoothly through full travel; shackle or lifting eye undamaged with secure pin; current test/inspection certificate. Damaged or undocumented clamps go out of service until re-tagged by a competent person. Pre-use inspection takes 60 seconds and catches the failures before they happen. What flange thickness range do beam clamps fit? Each clamp model specifies its own flange range, typically printed on the data plate. The Austlift GC01 1-tonne covers 75–220mm flange widths; the Beaver YC industrial range covers 90–320mm depending on capacity. Flange thickness ranges are similarly model-specific. The rule: measure both width and thickness before ordering, don't guess from the section nomination, and never shim a too-large clamp onto a thinner flange. Why does my beam clamp slip on the flange? Three common causes: side load from an off-vertical sling angle (vertical lift only unless rated otherwise), screw not fully tightened down before the load was taken up (re-check screw tension after initial load), or flange thickness outside the clamp's specified range. A beam clamp that's slipping under load needs to be unloaded immediately and the cause identified before continuing. Can a beam clamp be used on top of an I-beam flange (bull rigging)? Standard lifting beam clamps are designed for the lower flange only. Top-flange "bull rigging" configurations are not rated unless the manufacturer's documentation specifically approves the orientation. The forum consensus from r/Ironworker matches the standards: bottom flange unless the data plate says otherwise. If you need to pull a load up over a beam, the conventional rigging solution is a snatch block reeving the line over the beam to a separate anchor point. For the differences between BSP, NPT, UNC and BSW thread standards, see our Thread Standards Guide. Browse key steel at AIMS Industrial for application support and stock confirmation. People Also Ask — Beam Clamps Q: What is a beam clamp used for? A beam clamp is a rigging device that attaches to the bottom flange of a structural steel beam (I-beam or H-beam) to provide a suspension point for a chain block, hoist, or load. Beam clamps are used when a fixed lifting attachment is not available — for example, during temporary lifts for equipment installation, maintenance, or removal in facilities with overhead steel structures. Q: How do I know if a beam clamp fits my beam? Beam clamps are rated for a range of beam flange widths and thicknesses. Before selecting a clamp, measure the flange width (across the bottom of the beam) and the flange thickness. Both dimensions must fall within the clamp's specified range. Operating a clamp on a beam outside its specified dimensions — particularly on an undersized or oversized flange — results in incorrect load distribution and potential failure. Q: What is the Safe Working Load (WLL) of a beam clamp? The Working Load Limit (WLL) of a beam clamp is the maximum load it is rated to carry under a direct vertical pull. This WLL decreases significantly when the lift is not vertical — a side load or angled sling imposes a horizontal component of force on the clamp and reduces effective lifting capacity. Always consult the manufacturer's load rating for the specific sling angle being used. Q: What Australian standards apply to beam clamps? AS 4991 (Lifting Devices) and AS 1418.2 (Hoists and Winches) are the primary standards relevant to beam clamps and their use in Australian workplaces. AS 4991 covers the design, testing, and safe use of lifting devices in general, while AS 1418.2 addresses hoist and crane equipment. All beam clamps and lifting equipment used in Australian workplaces should be designed, tested, and maintained to comply with the applicable Australian standards. Q: What is the difference between a beam clamp, a lifting beam, and a spreader beam? These terms describe three different devices. A beam clamp attaches to an existing structural beam to create a temporary lift point. A lifting beam (or spreader beam) is an engineered structural beam that is itself suspended from a crane and used to distribute load across multiple pick points — for example, to lift a long load from two or more attachment points. They serve fundamentally different purposes and are not interchangeable. How do I attach a hoist or sling to a beam clamp? Most beam clamps have a suspension eye or shackle point that the hoist top-hook, chain block or sling connects to. Use a rated shackle or the hook's safety catch, keep the pull vertical and in line with the clamp's rated direction, and don't side-load it. For the lifting gear see the lifting equipment range. Is a beam clamp a permanent anchor point? No — a beam clamp is a temporary lifting attachment fitted for a specific lift and removed afterwards, not a fixed structural anchor. For a permanent anchor, such as a fixed hoist or a fall-arrest point, an engineered, certified attachment designed for the structure is required. Inspect the clamp before each use and confirm the WLL suits the load. See our plate clamp guide for related lifting clamps.
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Read moreStick Welding Guide: SMAW Setup, Electrode Selection, Positions & Australian Standards
What Is Stick Welding? Stick welding — formally Shielded Metal Arc Welding (SMAW), also called Manual Metal Arc (MMA) — is an arc welding process that uses a consumable, flux-coated electrode to join metal. The welder strikes an arc between the electrode tip and the workpiece; the arc melts both the electrode core and the parent metal into a shared weld pool, while the flux coating burns to shield that pool from the atmosphere and forms a slag crust over the cooling weld. No gas bottle, no wire feeder — a power source, an electrode holder, a work clamp and a box of rods is enough to weld just about any common steel. Five names get used for the same process in Australia: Stick welding — the everyday tradesman's name, most common on AU sites and in workshops SMAW — Shielded Metal Arc Welding, the AWS/American Welding Society standard name MMA / MMAW — Manual Metal Arc (Welding), the term used in Australian and European standards Arc welding — an informal catch-all (technically MIG and TIG are arc welding too) Electric welding — an older AU term still used by some longer-serving tradies Quick answer — stick welding essentials What it is: Stick welding = Shielded Metal Arc Welding (SMAW) or Manual Metal Arc (MMA) — same process, different names. Uses a flux-coated electrode held in an electrode holder; no gas bottle, no wire feeder. Electrode by job: E6013 = general purpose, easy arc, learner default · E7018 = low-hydrogen, structural, must be oven-dried · E6010 = deep penetration, pipeline / dirty steel, DCEP only · E7024 = high-deposition, flat fillet welds only Polarity: Most rods (E7018, E6013, E6010) run DCEP (DC positive, electrode +). E7024 and some E6013 run DCEN or AC. Always check the rod packet. Electrode size by metal thickness: 2.5mm rod → 1.5-5mm steel · 3.2mm rod → 4-8mm steel · 4.0mm rod → 6mm+ steel. Why stick welding still dominates field work: No gas bottle to lug to site. No wire feeder to fail in dust or rain. Wind doesn't blow the shielding away. Works through paint, rust and mill scale (with the right rod). One welder and a 20kg box of rods can weld anywhere with mains power or a generator. Outdoor structural, agricultural, mining repair, pipeline and remote-site work is still 80%+ stick. What is stick welding best for? Stick welding is the most portable and forgiving of the common arc processes. It works well outdoors, on dirty or rusty steel, on thicker sections, and in remote or field conditions where gas shielding (used by MIG and TIG) isn't practical. It's the standard process for structural steel, pipework, maintenance and repair, and farm and construction work. For Australian hard hat selection and AS/NZS 1801 standards, see our Hard Hat Guide Australia. The catch is technique. Stick welding has the steepest learning curve of the three common arc welding processes. The arc is harder to start, the puddle is harder to read, and the slag covers the bead so you can't see what you're doing in real time. Once mastered, stick is forgiving of dirty material and bad fit-up — but mastering it is a hands-on craft that takes time at the welder. This guide covers the stick welding process from welder selection through electrode choice, polarity, striking the arc, running a bead, reading the puddle, common defects, welding positions, materials beyond mild steel, and the AIMS Bossweld stick welder and electrode range stocked for Australian welders. For the broader MIG/TIG/Stick comparison decision, see our MIG vs TIG vs Stick Guide; for the full electrode brand and classification deep-dive, see our Welding Consumables Guide. For more engineering reference charts and selection tables, see our Engineering Reference Charts hub. The stick welder — inverter vs transformer, DC vs AC — Quick Reference Quick reference for stick welding guide, drawn from the detailed section below. Welder type Output Weight Best for Price band (AU) Transformer AC AC only 30-50 kg Low-cost workshop. Limited to E6013, E7024 AC-rated rods $200-$500 Transformer DC DC (rectified) 40-80 kg Production work, smooth arc $500-$1,500 (less common new) Inverter DC DC only 5-15 kg Modern default. Lightweight, smooth arc, all DC rods. Beginner-friendly $300-$1,500 Inverter AC/DC Switchable AC/DC 10-20 kg Aluminium TIG + stick combined $800-$3,000 Multiprocess inverter (MIG/Stick/TIG) DC, all three processes 15-50 kg Most versatile. Bossweld MST range $700-$6,000+ Engine-driven welder DC, sometimes AC 200-500 kg Site work without mains power. Diesel or petrol engine $3,000-$15,000+ Stick welding equipment overview The four pieces of kit you need to start stick welding: Power source (the "welder") — provides the welding current. Modern AU options: inverter DC, transformer AC, or multiprocess inverter (MIG/Stick/TIG combined) Electrode holder ("stinger") — clamps the electrode and is held by the welder. Insulated handle, spring-loaded jaws Work clamp ("earth clamp") — connects the return circuit to the workpiece. Heavy-duty C-clamp or magnetic style Welding cables — flexible high-current cables connecting holder and clamp to the welder. Sized in mm² (35, 50, 70 mm² common AU sizes) Plus the consumable: flux-coated stick electrodes (rods). And the PPE: welding helmet (auto-darkening shade 9-13), welding gloves, leather apron or jacket, fume mask if working indoors. See Welding Helmet Guide, Welding Eye Protection, and Respirator Guide for PPE specifics. The stick welder — inverter vs transformer, DC vs AC Welder type Output Weight Best for Price band (AU) Transformer AC AC only 30-50 kg Low-cost workshop. Limited to E6013, E7024 AC-rated rods $200-$500 Transformer DC DC (rectified) 40-80 kg Production work, smooth arc $500-$1,500 (less common new) Inverter DC DC only 5-15 kg Modern default. Lightweight, smooth arc, all DC rods. Beginner-friendly $300-$1,500 Inverter AC/DC Switchable AC/DC 10-20 kg Aluminium TIG + stick combined $800-$3,000 Multiprocess inverter (MIG/Stick/TIG) DC, all three processes 15-50 kg Most versatile. Bossweld MST range $700-$6,000+ Engine-driven welder DC, sometimes AC 200-500 kg Site work without mains power. Diesel or petrol engine $3,000-$15,000+ For the modern AU welder, inverter DC is the default choice. The 5 kg inverter that fits in a backpack does what a 50 kg transformer used to do, with a smoother arc that's easier to learn. Multiprocess machines (Bossweld MST series) add MIG and TIG capability so the same welder handles three processes — increasingly the standard for small workshops and on-site repairs. Two key specs to check when buying: Maximum amperage — must match the electrode size you'll run. 180A handles up to 4mm rods on most steel; 250A+ handles 5mm+ rods on heavy plate Duty cycle — percentage of a 10-minute period the welder can run continuously without overheating. 60% duty cycle at rated current is standard for industrial; 30-40% is hobby tier Stick electrodes — the basics Stick electrodes (rods) are the consumable: a steel core wire with a flux coating around it. The core melts to form the weld bead; the flux burns to provide shielding gas, slag formation, and alloy additions. The four most common AU stick electrodes for mild steel: Classification Common AU name Polarity Best for E6013 "General purpose" / GP AC, DCEN, DCEP Beginners. Easy strike. Mild steel up to 6mm. Most forgiving rod E7016 / E7018 "Low hydrogen" / lo-hy DCEP (DC+ on rod) Higher-strength, low-defect work. Pressure pipe, structural. Needs dry storage E6010 "Pipe rod" / cellulose DCEP only Pipeline, root passes, deep penetration. Aggressive arc, beginners struggle E6011 "AC pipe rod" AC, DCEP Like 6010 but runs on AC welders. Cellulose-based E7024 "Iron powder" / drag rod AC, DCEN, DCEP Fast-fill horizontal/flat fillet welds. Self-drag technique For the full electrode classification system, brand selection (Bossweld, WIA, Cigweld), specialist rods (stainless, cast iron, hardfacing) and storage requirements, see our comprehensive Welding Consumables Guide. The lo-hy (E7018) storage rule: Low hydrogen electrodes (E7016, E7018) absorb moisture from the air. Wet rods cause hydrogen-induced cracking in the weld. Once the box is opened, lo-hy rods need to be kept in a heated rod oven (50–150°C) and re-baked if they've been exposed to humidity for more than 4 hours. The "open and use within four hours" rule is the standard. E6013 and E6010 don't have this restriction. Electrode coating chemistry: cellulosic, rutile and basic The classification code (E6013, E7018 etc.) tells you strength, position and polarity — but the coating chemistry is what actually drives how a rod behaves in the arc. AU stick electrodes fall into three coating families: Coating family Chemistry Arc characteristics Typical classifications Best for Cellulosic High proportion of cellulose (organic/wood-flour material) in the coating Aggressive, driving arc; fast-freezing slag; deep penetration E6010, E6011, E7010 Pipeline root passes, maintenance welding on dirty or painted steel, all-position work Rutile Titanium dioxide (TiO₂) based coating Soft, smooth arc; easy strike and restrike; lighter penetration E6013, E7014 General fabrication, sheet metal, cosmetic welds, beginners Basic (low-hydrogen) Calcium carbonate / calcium fluoride based coating with iron powder Medium penetration; best mechanical properties and toughness; needs dry storage E7016, E7018, E7018-1 Structural steel, pressure pipe, critical or highly restrained welds The practical takeaway: reach for cellulosic when penetrating dirty or painted material matters more than finish, rutile when ease of use and appearance matter most, and basic/low-hydrogen whenever the weld is structural or the joint is highly restrained. Don't trust the colour, trust the code. Some electrode coatings are tinted — greens, whites, blues and tans that trace back to oxides in the slag system (chrome oxide, titanium oxide, cobalt oxide, zinc ferrite/iron oxide and so on). That's not a reliable identification system: colour varies by manufacturer, isn't standardised across brands, and tells you nothing about tensile strength, position rating or polarity. Always identify a rod by the AWS classification printed on the flux coating (e.g. E7018) or on the packet — never by guessing from colour alone, especially when mixing stock from more than one supplier. Reading the full AWS code — including the H4R suffix E6013 and E7018 are the four-digit core of the AWS A5.1 classification. Low-hydrogen electrodes often carry extra letters after that core — for example E7018-H4R — and those suffixes matter as much as the main code on critical work: H4 / H8 / H16 — maximum diffusible hydrogen content, in millilitres per 100g of deposited weld metal, under AWS A4.3 test conditions. H16 = 16ml max, H8 = 8ml max, H4 = 4ml max. Lower is drier and better suited to high-strength or highly restrained structural steel, where hydrogen-induced cracking is the main risk. R — moisture-resistant coating. An R-rated electrode is tested under controlled humidity exposure and holds its low-hydrogen rating for longer once the packet is opened, compared with a standard low-hydrogen coating. So E7018-H4R decodes as: 70ksi tensile, all-position, low-hydrogen basic coating (from the core E7018), 4ml/100g maximum diffusible hydrogen (H4), moisture-resistant coating (R). It's the same E7018 rod, just built to a tighter, more traceable hydrogen and moisture spec — worth specifying by name on structural and pressure work rather than assuming any E7018 packet meets it. Polarity — DCEN, DCEP and AC explained The single most-asked stick welding question after "which rod do I use." Polarity refers to which lead (electrode or work) connects to the positive terminal on a DC welder. Polarity Description Effect on weld Common rods DCEP (DC+ on rod / DCRP — Reverse Polarity) Electrode is POSITIVE; work is negative Deeper penetration, more heat at electrode tip, faster melting of rod E7018, E6010, E6011 (all lo-hy and cellulose rods) DCEN (DC- on rod / DCSP — Straight Polarity) Electrode is NEGATIVE; work is positive Shallower penetration, less heat at rod, faster fill rate E6013, E7024 (preferred), some specialist rods AC Alternating — switches direction 50 times per second (50 Hz) Mid-way penetration. Some rods only run on AC E6013, E6011, E7024 (all AC-rated) The rule of thumb most welders memorise: "if the rod won't run smoothly, swap the polarity." Each electrode classification has a designed polarity range. Running E7018 on DCEN gives a poor arc and porous welds. Running E6013 on DCEP works but the arc is harsher than designed. The numbers in E7018 and E6013 are AWS A5.1 codes: First two digits (60, 70) = tensile strength × 1,000 psi (60ksi, 70ksi) Third digit (1, 2) = welding position (1 = all positions, 2 = flat/horizontal only) Fourth digit = flux coating type and polarity (0 = cellulose DCEP, 3 = rutile, 4 = iron powder, 5/6/8 = lo-hy basic) Striking the arc — scratch start vs tap start The first technical hurdle for new stick welders. The arc starts when the electrode briefly touches the workpiece, completing the circuit, then withdraws to maintain a stable arc gap. Two common starting techniques: Before you strike: dry runs and tack welds Two habits separate confident stick welders from anyone flailing at a fresh joint: practising the movement before the arc is live, and tacking the joint before running the full weld. Dry run first. Before striking the arc, drag the electrode along a spare table edge or scrap steel with the power off (or well clear of the workpiece) to rehearse the travel angle, work angle and travel speed you're about to use. It costs nothing, builds the muscle memory for a consistent pace, and means the first live pass isn't also the first time your hand has moved along that joint. Tack, then weld. On anything more than a quick repair, run short tack welds at both ends of the joint (and at intervals on longer runs) before the main pass. Tacks hold alignment and fit-up while you weld the rest of the joint — and because they're short, a tack that reveals poor alignment is easy to break and redo before it's locked into a full-length weld. Aim for tacks you could snap off with a hammer if the fit-up is out; if a tack takes real effort to break, it's doing its job of holding the parts true. Magnetic clamps and standard C-clamps make holding parts square for tacking far easier than doing it by eye — see the AIMS welding clamps and welding magnets ranges. What you're aiming for. As a quick visual check while you're learning: a finished bead should run roughly twice the electrode's diameter wide. That's a simpler version of the fuller 2-3× rule covered under Running a bead below — use it as a first-glance sanity check, then read the puddle and adjust travel speed and amps as described there. Scratch start — drag the electrode tip across the workpiece surface like striking a match, then lift slightly. Best for E6013 and similar rutile rods that ignite easily. Easier for beginners. Tap start — touch the electrode straight down to the work, then lift quickly. Required for E7018 lo-hy rods and most low-hydrogen electrodes. Sticks more often than scratch start while you're learning. The four common arc-start mistakes and their fixes: Problem Cause Fix Rod sticks to the work Lifted too slowly after touch; amperage too low Increase amps 10-20A; lift faster after strike. If stuck, twist rod side-to-side to crack flux loose Arc keeps blowing out Arc length too long Bring electrode closer (arc length = approximately the rod core diameter) Arc won't start at all Cold rod (lo-hy needs warmth); damp flux; bad earth clamp connection Bake lo-hy at 100-120°C 1hr; check earth clamp grips bare metal Arc starts then dies Rod tip dirty / contaminated with old flux Tap rod tip on clean steel to expose fresh metal core; restrike Running a bead — angle, arc length, travel speed The four parameters that determine bead quality: angle, arc length, amperage, and travel speed (the "AAATs" of stick welding). Travel angle — the angle of the electrode along the direction of travel. Stick welding uses a drag angle (the rod points BEHIND the direction you're moving, by 10-15°). Pulling the puddle behind you, not pushing it ahead. Also called "backhand" technique. The opposite of MIG which uses push angle. Work angle — the angle of the electrode relative to the workpiece face. 90° (perpendicular) for flat butt welds; 45° on each side for fillet welds (split the angle between the two plates). Arc length — the gap between the electrode tip and the molten weld puddle. Standard rule: arc length equals the rod core diameter. A 3.2mm rod runs at a 3.2mm arc length. Too short and the rod sticks; too long and the arc blows out, the weld becomes porous. Travel speed — how fast you move the rod along the joint. Right speed produces a bead approximately 2-3× the rod diameter wide. Too fast = thin, narrow bead with undercut. Too slow = wide, bulky bead with excessive penetration. Amperage — by rod diameter: Electrode dia Amperage range Use 2.0 mm 40-80 A Sheet metal, light fab (1.5-3 mm thickness) 2.5 mm 60-110 A Sheet to medium (2-5 mm) 3.2 mm 90-150 A General purpose (3-8 mm) — most common rod 4.0 mm 130-200 A Heavy fab, structural (6-12 mm) 5.0 mm 180-260 A Heavy plate (10 mm+) 6.0 mm 220-340 A Industrial heavy plate (15 mm+) Within each rod range, increase amps for: lower position (vertical-down, overhead), thicker plate, faster travel. Decrease amps for: thinner plate, vertical-up, root passes. SMAW: the five controllable variables Underneath all the individual tips on angle, amps and arc length sits a simple framework welding trainers use to diagnose a bad bead: stick welding quality comes down to five variables the welder directly controls. Current (amperage) — set by rod diameter and material thickness; see the amperage table below Arc length — the gap between electrode tip and puddle; too long and it blows out and turns porous, too short and it sticks Angle — both travel angle (drag vs push) and work angle relative to the joint Travel speed — how fast the rod moves along the joint; controls bead width and penetration Manipulation — any weave or side-to-side pattern added to straight travel, used to fill wider gaps or manage heat input on vertical and overhead work Everything else in this guide — puddle shape, sound, slag behaviour — is really just feedback on whether these five are dialled in correctly. If a weld looks wrong, work back through the list in this order: current, then arc length, then angle, then speed, then manipulation. Reading the weld puddle The skill that separates beginners from experienced stick welders. The molten weld puddle is what you actually weld — not the electrode, not the joint. Reading the puddle in real time tells you whether amps are right, travel speed is right, and the joint is fusing properly. What experienced welders watch for: Puddle shape — should be roughly oval, slightly elongated in the direction of travel. Round puddle = travel too slow. Pointed/elongated = travel too fast Puddle size — width approximately 2-3× rod diameter. Smaller = amps too low; bigger = amps too high or travel too slow Wetting at the toes — the edges of the puddle should "wet out" and tie smoothly into the parent metal. A sharp transition with a raised lip means insufficient fusion Slag movement — slag floats on top of the puddle and travels behind it. If slag overtakes the puddle, you're going too slow or arc length is too long Sound — a steady "frying bacon" or "ripping cloth" sound means the arc is correct. Hissing, popping, or sputtering means something is off (usually arc length) The forum-validated truth — sound matters. Practical Machinist and Reddit r/Welding consensus: a properly running stick weld sounds like bacon frying or paper ripping. Hissing = arc too long. Popping/spitting = damp rod. Sputtering = wrong polarity. Experienced welders weld by sound as much as by sight. Headphones-off when stick welding. Welding positions — flat, horizontal, vertical, overhead AS/NZS 3545 (the AU/NZ adoption of ISO 6947) and AWS D1.1 designate welding positions. Stick welding handles all four; each gets progressively harder. Position Code (groove / fillet) Difficulty Notes Flat (downhand) 1G / 1F Beginner Workpiece flat, weld on top surface. Gravity helps the puddle. Default learning position Horizontal 2G / 2F Intermediate Weld runs horizontally on a vertical face. Puddle wants to sag — control with travel speed and rod angle Vertical (up or down) 3G / 3F Advanced Vertical-up = strong fusion, slower (E7018 standard). Vertical-down = fast fill, less penetration (E6013/E7024) Overhead 4G / 4F Expert Welding upside-down. Lower amps, shorter arc, faster travel. Spatter falls down on you (PPE critical) Position skill is what AWS/AS welder qualification tests certify. A "1G certified" welder can weld flat groove welds; "3G/4G certified" means qualified for all positions including overhead — much higher pay grade. Common stick welding defects Defect Appearance Cause Fix Porosity Holes/pinpricks in the bead Damp electrode (lo-hy especially); contamination on parent metal; arc length too long Re-bake electrodes; clean metal; shorten arc length Slag inclusion Dark spots inside cooled weld; ridge between passes Slag not removed between passes; travel speed too slow allowing slag to flow forward Chip and brush slag fully between passes; faster travel Undercut Groove cut into parent metal at toe of weld Amperage too high; travel speed too fast; arc length too long; wrong rod angle Reduce amps; slow travel; shorten arc Burn-through Hole melted through thin material Amperage too high for material thickness; travel too slow Drop amps; faster travel; switch to smaller rod Lack of fusion Weld lays on top without bonding to parent metal Amperage too low; arc length too long; rod tip not penetrating to puddle base Increase amps; shorter arc; ensure rod tip is at the joint root Crater crack Crack at the end of a weld Stopped welding too abruptly leaving a deep crater that solidifies under stress Pause arc on the puddle, fill the crater, then break arc; use back-step technique Spatter Small balls of weld metal stuck near the bead Excessive amperage; long arc; damp rod (especially lo-hy) Reduce amps; shorten arc; check rod storage Arc strikes Small spot weld marks on parent metal away from joint Striking the arc on the parent metal away from the weld joint Strike only on the joint or on a scrap piece; grind out arc strikes (they're crack-prone) Fingernailing Bead has an uneven, crescent- or fingernail-shaped leading edge instead of a symmetrical puddle Electrode coating is off-centre (not concentric) on the core wire, so it burns away unevenly Discard the rod — this is a manufacturing/storage defect, not a technique fix. Check new boxes before use on critical welds Fingernailing is worth calling out on its own: unlike most defects in this table, it isn't a technique problem. It happens when the flux coating on the electrode isn't concentric to the core wire — thicker on one side than the other. The heavier side burns more slowly, so the arc gets pushed off-centre, direction control suffers, the bead comes out inconsistent, and shielding coverage weakens on the thin side. If a rod is arcing unevenly straight out of a fresh packet despite good technique, check for fingernailing before troubleshooting your technique. Stick welding materials beyond mild steel Stick welding is fundamentally a steel-welding process but with the right rod handles a wide range: Mild steel — E6013, E7018 cover everything. The default case Stainless steel — E308L-16 for 304 stainless, E316L-16 for 316. Match the rod to the parent grade. DCEP polarity Cast iron — E NiFe-Cl (nickel-iron) or E Ni-Cl (pure nickel). Preheat to 200-300°C is mandatory; slow cool by burying in sand or vermiculite Hardfacing — Bossweld H600, Gemini H600R for wear surfaces. Weld onto manganese steel, plough shares, mining buckets Dissimilar metals — E312-16 (29/9 stainless) for joining stainless to mild steel, or unknown alloys Aluminium — Stick welding aluminium is possible (E4043 or E4047 rods) but technically difficult. TIG or MIG is far better for aluminium — see TIG Welding Guide Cast steel and alloys — match the rod to the parent grade per the spec sheet Cast iron — preheat is non-negotiable. Welding cast iron without preheat is the most common cause of "the weld cracked when it cooled" complaints. Cast iron has 4-30× the carbon content of mild steel — it's brittle, and rapid cooling causes cracking in the heat-affected zone. Preheat to 200-300°C with an oxy-acetylene torch, weld with short stringer beads, peen each bead immediately after welding, then bury the part in dry sand to cool slowly over 24+ hours. Slag removal and post-weld cleanup Stick welding produces slag — a glassy crust over the weld bead that must be removed before further passes or final inspection. The slag protects the cooling weld from oxidation but obscures defects underneath. Slag removal procedure: Wait 5-10 seconds after the arc breaks for the bead to cool below red heat Use a chipping hammer to crack the slag off the bead — angle blows along the bead direction, not across it Wire brush the bead to remove fine slag particles and reveal the underlying metal Inspect the bead for defects (porosity, undercut, lack of fusion) before laying the next pass Between multi-pass welds — full slag removal is mandatory. Slag inclusion in subsequent passes is a major defect For thick multi-pass welds, a chipping hammer + wire brush + angle grinder with a wire wheel is the standard kit. The Wire Brush & Wire Wheel Guide covers knotted vs crimped, cup vs wheel geometry, and why stainless welds need a dedicated stainless wire brush to avoid carbon contamination. Auto-darkening helmet stays on during chipping — slag chips fly at high speed. AIMS also stocks dedicated wire brushes and picks & chipping hammers collections for slag removal kit. Stick welding safety — AS/NZS standards Stick welding generates four hazards: arc radiation (UV/IR/visible), fume, electrical shock, and heat/fire/burns. Each has its own AU standards reference: Hazard Control Standard reference Arc radiation (UV/IR) Auto-darkening helmet shade 9-13 (depending on amperage) AS/NZS 1338.1 (welding helmets), AS/NZS 1337 (eye protection) Fume (manganese, hexavalent chromium on stainless) Local exhaust ventilation, P2 respirator minimum, fume extractor for indoor work AS/NZS 1715 (respirator selection), AS/NZS 1716 (respirator testing) Electrical shock Insulated electrode holder, dry conditions, no welding on live equipment AS 1674.2 (Safety in welding) Heat/fire/burns Leather welding gloves, leather apron/jacket, fire-resistant boots, no flammables within 10 m AS 1674.1 (Welding hot work permits) Spatter/projectiles Safety glasses under helmet (always), closed footwear AS/NZS 1337.1 (eye and face protection) AS 1674.2:2007 is the primary AU welding safety standard. SafeWork Australia and state regulators reference it for hot work permits, training, and workplace welding compliance. AIMS Bossweld stick welder + electrode range AIMS stocks the Bossweld multiprocess inverter range — the dominant AU stick-capable welder lineup — plus a comprehensive electrode and consumable selection. Bossweld multiprocess welders (MIG/Stick/TIG inverter): MST 188X — 180A, 240V, 10A plug, $748. Hobby/light fab. Compact 240V single-phase MST 188X Bundle — Same welder + accessories pack, $989 MST 248X — 220A, 240V, 15A plug, $1,091. Light commercial fab MST 350X — 350A, 415V three-phase, $4,007. Industrial multiprocess. 60% duty cycle MST 500X — 500A, 415V, water-cooled, $6,260. Heavy industrial production Stick electrodes (Bossweld + Gemini): Bossweld and Gemini cover the standard mild steel range (E6013, E7018, E6011), plus specialist rods including E312-16 dissimilar, hardfacing (H600), and stainless (308L, 316L). Browse the filler metals collection for the full electrode range. For brand-by-brand electrode selection by application, see our Welding Consumables Guide. Welding cables and accessories: The welding cables and accessories collection covers electrode holders, work clamps, welding leads (35-70 mm²), connector plugs, and cable repair fittings. The welding supplies collection covers chipping hammers, wire brushes, slag chippers, and welding magnets. For PPE: see Welding Helmet Guide, Welding Eye Protection, and Respirator Guide. Need help selecting a welder, electrodes or accessories for your application? Browse the full welding range, contact the AIMS team or call us on (02) 9773 0122 — happy to talk through machine size, electrode selection and PPE for your job. Common stick welding mistakes Mistake Result Fix Wrong polarity for the rod Poor arc, porosity, sticking, bad weld Check rod packet — DCEP for E7018, DCEN/AC for E7024, etc. Damp lo-hy electrodes Hydrogen-induced cracking; porosity Store opened E7018 in heated rod oven 50-150°C. Re-bake if exposed to air >4hrs Arc length too long Porosity, spatter, bad fusion Arc length = rod diameter — keep it tight Wrong amps for rod and material Burn-through (too high) or lack of fusion (too low) Match amps to rod size table; adjust for thickness and position Push angle instead of drag angle Slag gets pushed forward, ends up under the bead Drag angle — rod points behind direction of travel, 10-15° Skipping slag removal between passes Slag inclusion defects in finished weld Chip and wire brush every pass before laying the next Bad earth clamp connection Erratic arc, won't strike, uneven welds Earth clamp must grip clean BARE metal — grind off paint/rust at clamp point Cast iron without preheat Crack on cooling — every time Preheat 200-300°C, peen each bead, bury in sand to cool slowly Welding into the wind on E7018 outdoors Wind blows the shielding away — porous weld Shield with a screen or wind-block; switch to E6011 or E6010 outdoors Striking arc on parent metal away from joint "Arc strike" creates a hard, crack-prone spot on the metal Strike only on the weld joint itself or on a scrap tab Frequently Asked Questions What is stick welding? Stick welding is the everyday name for Shielded Metal Arc Welding (SMAW), also called Manual Metal Arc (MMA). It uses a flux-coated consumable electrode (the "stick" or "rod") to create an electric arc between the rod tip and the workpiece. The arc melts both the rod core and the parent metal, forming a weld pool; the flux burns to produce a shielding gas and a protective slag layer over the cooling weld. Because the shielding comes from the flux rather than a gas bottle, stick tolerates wind, rust, paint and mill scale far better than MIG or TIG — it's the standard choice for outdoor, dirty and remote-site work. What's the difference between SMAW, MMA and stick welding? They're all the same process. SMAW (Shielded Metal Arc Welding) is the AWS/American name, MMA (Manual Metal Arc) is the term used in Australian and European standards, and "stick welding" is the everyday tradesman's name. AS 1674.2 uses MMA terminology, and AS 2812 (the AU glossary of welding terms) formally defines it. AU welders informally use "stick" or "stick welding" day to day. What polarity should I use for stick welding? It depends on the electrode. E7018 and E6010 require DCEP (DC+ on the electrode, also called DC reverse polarity). E6013 runs on AC, DCEN, or DCEP. E7024 prefers DCEN. E6011 runs on AC or DCEP. The rod packet states the recommended polarity. The general rule: lo-hy and cellulosic rods (E7018, E6010, E6011) need DCEP; rutile general-purpose rods (E6013, E7024) work on AC or DCEN. What does E6013 and E7018 mean? The numbers are AWS A5.1 classification codes for stick electrodes. The first two digits (60 or 70) indicate tensile strength in thousands of psi (60ksi or 70ksi). The third digit indicates welding position (1 = all positions, 2 = flat/horizontal). The fourth digit indicates flux coating type and recommended polarity (3 = rutile, 4 = iron powder, 8 = lo-hy basic). So E6013 is 60ksi tensile, all-position, rutile flux. E7018 is 70ksi tensile, all-position, low-hydrogen basic flux. What amperage should I use for stick welding? Match amperage to electrode diameter. 2.0mm rod: 40-80A. 2.5mm: 60-110A. 3.2mm (most common): 90-150A. 4.0mm: 130-200A. 5.0mm: 180-260A. 6.0mm: 220-340A. Within each range, increase amps for thicker plate and lower position (vertical-down, overhead); decrease for thinner plate, vertical-up, root passes. Each electrode packet states the manufacturer's recommended range. How do I strike a stick welding arc? Two techniques. Scratch start: drag the electrode tip across the workpiece like striking a match, then lift slightly to maintain the arc. Best for E6013 and rutile rods. Tap start: touch the electrode straight down and lift quickly. Required for E7018 lo-hy rods. It's worth a dry run first — dragging the electrode along scrap steel with the arc off to rehearse angle and speed before you strike for real. Common arc-start mistakes: rod sticks (lift faster, increase amps); arc blows out (arc length too long, bring rod closer); won't start (cold rod, dirty earth clamp connection). Why does my stick electrode keep sticking to the work? Three common causes: amperage too low (the rod can't generate enough heat to break free — increase amps 10-20A); lifted too slowly after the touch (lift faster after the strike); arc length too short (you're holding the rod too close to the work). If the rod is stuck, twist it side-to-side to crack the flux loose, or break it out by snapping it off in the holder and restriking. Sticking is a normal beginner problem — it disappears with practice as you find the right amperage and arc length. What's the best stick welding rod for beginners? E6013 — universally recommended as the beginner rod. It strikes easily, runs on AC or DC (any polarity), produces a smooth bead, and is forgiving of slight technique errors. Available in 2.5mm and 3.2mm for sheet and general work. Once you're competent on E6013, step up to E7018 (lo-hy basic, higher quality welds, requires DCEP and dry storage) for structural work. How do I read a stick welding puddle? Watch for shape (oval, slightly elongated in direction of travel), size (2-3× rod diameter wide), wetting at the toes (smooth tie-in to parent metal — no sharp lip), slag movement (slag should travel behind the puddle, not overtake it), and sound (steady "frying bacon" or "ripping cloth" — hissing means arc too long, popping means damp rod). Reading the puddle is the core stick welding skill — it tells you whether amps, travel speed and arc length are correct in real time. Can I stick weld stainless steel? Yes — use E308L-16 for 304 stainless and E316L-16 for 316 stainless. Match the rod grade to the parent grade. Use DCEP polarity. Stainless work-hardens quickly, so use lower amperage than for mild steel of the same thickness. Clean the joint thoroughly before welding. The rods are more expensive than mild steel rods (roughly 3-5× the cost) and need dry storage similar to lo-hy electrodes. Can I stick weld cast iron? Yes, but it's the most demanding stick welding application. Use E NiFe-Cl (nickel-iron) or E Ni-Cl (pure nickel) rods. Preheat the parent metal to 200-300°C with an oxy-acetylene torch — preheat is non-negotiable. Weld with short stringer beads (25-50mm long), peen each bead immediately while still hot, and bury the part in dry sand or vermiculite to cool slowly over 24+ hours. Welding cast iron without preheat causes cracking in the heat-affected zone every time. Why is my E7018 rod producing porous welds? Three causes, all related to moisture. Damp electrodes: E7018 absorbs moisture from the air and the moisture decomposes in the arc, releasing hydrogen that causes porosity. Solution: store opened E7018 in a heated rod oven at 50-150°C; re-bake if exposed to air more than 4 hours (or check the packet if it's an H4R-rated rod, which tolerates longer exposure). Wet or contaminated parent metal: clean the joint with a wire brush. Long arc length: shorten the arc to approximately the rod diameter. What's the difference between vertical-up and vertical-down welding? Vertical-up means starting at the bottom and welding upward against gravity. Slower, deeper penetration, stronger weld. Standard for structural pipe and pressure work using E7018. Vertical-down means starting at the top and welding downward with gravity. Faster, less penetration, used for thin material and cosmetic welds with E6013 or E7024. AWS/AS welder qualification (3G certification) typically tests vertical-up welds — the harder of the two. Do I need a special welder for stick welding? You need a power source that delivers welding-current DC or AC at the amperage range for your electrodes. The modern default is an inverter DC welder (Bossweld MST series in AU): lightweight, smooth arc, runs all DC stick electrodes. AC-only transformer welders work with E6013 and E7024 but won't run E7018 or E6010. Multiprocess inverters (MIG/Stick/TIG combined) cover stick welding plus MIG and TIG. Engine-driven welders are for site work without mains power. What PPE do I need for stick welding? Auto-darkening welding helmet (shade 9-13 depending on amperage) to AS/NZS 1338.1 and AS/NZS 1337.1. Safety glasses underneath the helmet (always — lifting the helmet to inspect the weld exposes eyes to UV from adjacent welders). Leather welding gloves. Leather apron or welding jacket. Closed leather boots. P2 respirator minimum for indoor welding, with local exhaust ventilation if possible — welding fume contains manganese (mild steel) and hexavalent chromium (stainless), which are serious health hazards. AS 1674.2 is the AU welding electrical safety standard. Is stick welding easy to learn? Stick welding is harder to learn than MIG but easier than TIG. The challenge is maintaining a consistent arc length and travel speed while reading the puddle through a dark welding lens. Most beginners need consistent practice to lay clean welds. The reward is a process that works on dirty material, outdoors, in any position, and runs from a simple inverter welder with no gas bottle. What's the difference between stick welding and MIG? Stick uses a hand-held consumable electrode that you strike and feed manually into the puddle, with flux providing the shielding. MIG uses a continuously-fed wire from a gun with separate gas shielding. Stick is more portable (no gas bottle), handles dirty material better, works in wind and rain, and runs on simpler equipment. MIG is faster, cleaner and easier to learn but needs gas, prefers clean material, and doesn't suit outdoor or windy conditions. See our MIG vs TIG vs Stick Guide for the full comparison. What thickness of material can I weld with stick? Practical range for a portable stick welder: 3mm to 25mm+ material. Thinner than 3mm burns through easily with stick — MIG or TIG is a better choice for thin sheet. Thicker material can be built up in multiple passes (root, fill, cap). Structural site work often uses stick specifically because it handles thick sections and outdoor conditions well. What is a low-hydrogen electrode and why does it matter? Low-hydrogen electrodes (E7016, E7018, E7028) have a coating engineered to minimise moisture and hydrogen absorbed during welding. Hydrogen embrittlement in the weld metal causes cracking in high-strength steel, restrained joints, and structural welding. Low-hydrogen rods must be stored in a heated rod oven (typically 50-150°C) once opened to prevent moisture absorption — a wet low-hydrogen rod loses its low-hydrogen property. Rods with an R suffix (e.g. E7018-H4R) resist moisture pickup for longer once opened. Can I stick weld outdoors in wind? Yes — stick welding tolerates outdoor and windy conditions far better than MIG or TIG. The slag layer produced by the electrode flux protects the weld pool from atmospheric contamination, so wind that would blow away shielding gas on a MIG or TIG weld does not affect a stick weld in the same way. This is why stick is the standard process for structural site work, pipeline welding, farm and workshop repairs, and mobile jobs. In genuinely strong wind, a portable screen still helps protect the arc and nearby workers from glare and spatter. What is hot-start on a stick welder? Hot-start is a feature on modern inverter stick welders that temporarily boosts the initial arc current when the electrode strikes — typically 20-50% above the set current for the first 0.5-2 seconds. This makes it easier to establish a stable arc, especially with hard-starting electrodes such as low-hydrogen types. Older transformer welders don't have hot-start; the operator needs more skill to strike a clean arc cold. What's the difference between cellulosic, rutile and basic electrode coatings? These are the three main flux coating families for stick electrodes, and they behave very differently in the arc. Cellulosic (E6010, E6011) has a fast-freezing slag and a driving arc for deep penetration — the pipeline and dirty-steel rod. Rutile (E6013, E7014) has a soft, easy arc that strikes and restrikes readily — the general-purpose, beginner-friendly choice. Basic/low-hydrogen (E7018) gives the best mechanical properties and crack resistance but needs dry storage — the structural and pressure-work choice. The AWS code tells you strength and position; the coating family tells you how the rod will actually feel and perform. What does "fingernailing" mean in stick welding? Fingernailing is a defect where the electrode's flux coating isn't concentric to the core wire — thicker on one side than the other. The heavier side burns more slowly, pushing the arc off-centre and leaving an uneven, crescent- or fingernail-shaped leading edge on the bead instead of a symmetrical puddle. It causes poor arc direction, an inconsistent bead, and weak shielding on the thin side. It's a manufacturing or storage defect, not a technique problem — if a rod is arcing unevenly straight out of the packet despite good technique, check for fingernailing rather than blaming yourself. What does the H4R suffix mean on an electrode like E7018-H4R? H4 and R are add-on designators for low-hydrogen electrodes. H4 means the electrode is tested to a maximum diffusible hydrogen content of 4ml per 100g of deposited weld metal — the driest, most crack-resistant grade (H8 and H16 are less strict). R means the coating is moisture-resistant, tested under controlled humidity, so it holds its low-hydrogen rating for longer once the packet is opened than a standard low-hydrogen coating. E7018-H4R is still an E7018 rod — just built and tested to a tighter hydrogen and moisture spec, which matters on structural steel and pressure equipment. Can I trust the colour on a stick electrode to identify it? No — go by the AWS classification printed on the coating or the packet, not the colour. Coating tints do trace back to real chemistry (oxides in the slag system), but colour isn't standardised across manufacturers and tells you nothing reliable about strength, position rating or polarity. Treat colour as a rough visual sort at best, especially when working with stock from more than one supplier — always confirm the printed code before welding anything structural or critical. Is flux-cored welding (FCAW) the same as stick welding? No, though they're often confused because both involve flux. Stick welding (SMAW) uses a short, rigid, hand-held electrode that's fully consumed and replaced every few minutes. Flux-cored arc welding (FCAW) feeds a continuous tubular wire — with flux packed inside it rather than coated on the outside — through a MIG-style gun, so it runs off a wire feeder like MIG rather than a stinger like stick. Self-shielded FCAW shares stick's advantage of working without a gas bottle, but the equipment, feed mechanics and typical applications (higher-volume fabrication vs stick's portability and field repair) are quite different. What are the five controllable variables in stick welding? Welding trainers commonly reduce SMAW technique to five variables the welder directly controls: current (amperage), arc length, angle (both travel and work angle), travel speed, and manipulation (any weave pattern). Almost every defect in this guide traces back to one of these five being off — so when a weld looks wrong, it's a useful troubleshooting order to work through: check current first, then arc length, then angle, then speed, then manipulation.
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