Buy Power Hacksaw Blades Online in Australia
Power Hacksaw Blade Selection — Quick Reference
Power hacksaw blades are the long heavy-duty hacksaw blades used in mechanical power hacksaws — reciprocating-action steel cutting machines for production cutting of bar + structural sections + tube. Slower but very accurate vs bandsaw, used where finish + dimensional accuracy matter.
| Blade Spec | Best For | TPI Guide |
|---|---|---|
| HSS All-Hard Blade | Production cutting carbon steel + light alloy | 6-14 TPI per section thickness |
| HSS Bi-Metal Blade | Mixed material + structural sections — flex-tolerant | 6-10 TPI |
| HSS Cobalt M42 Blade | Stainless + tough alloys + production volume | Same TPI range — longer life |
| Carbide-Tipped Blade | Hardened steel + high-volume production | Per spec — premium for harder substrates |
| 14 TPI (Fine) | Thin-wall tube + sheet + small section | Wall thickness ≤3mm |
| 10 TPI (Medium) | Workshop standard — most structural sections | Wall 3-12mm |
| 6 TPI (Coarse) | Thick solid bar + heavy structural | Solid stock + thick sections |
3-tooth rule: always have at least 3 teeth in contact with the workpiece at any time. Too few teeth = catastrophic blade damage; too many = chip clogging. Common dimensions: 350mm × 32mm × 1.6mm (workshop standard), 450mm + 525mm for heavier machines. Cutting fluid mandatory on power hacksaw — extends blade life 3-5×. Brands: Excision, Bordo, Sutton Tools. Companion: hand hacksaw blades, circular saw blades, cutting lubricants, cut-off discs.
People Also Ask — Power Hacksaw Blades
Q: What is a power hacksaw blade?
A power hacksaw blade is a long, heavy-duty reciprocating blade used in mechanical power hacksaws — stationary machines that cut bar stock, structural sections, and tube by a motorised back-and-forth sawing action. They are longer and heavier than hand hacksaw blades, designed for the higher loads and continuous duty of machine cutting.
Q: How do I choose the right TPI (teeth per inch) for a power hacksaw?
Select TPI by the wall thickness of material being cut. 14 TPI suits thin-wall tube and sheet up to approximately 3 mm wall thickness. 10 TPI is the workshop standard for most structural sections with walls of 3–12 mm. 6 TPI suits thick solid bar and heavy structural sections. The 3-tooth rule applies: always keep at least 3 teeth in contact with the workpiece — too few teeth causes tooth stripping and premature blade failure.
Q: What is the difference between an HSS all-hard and an HSS bi-metal power hacksaw blade?
An HSS all-hard blade is made from a single high-speed steel alloy throughout — harder and more wear-resistant but more brittle and prone to tooth breakage on mixed materials or vibration. A bi-metal blade has HSS teeth welded to a flexible spring steel body, giving the cutting edge hardness of HSS with the flexibility of spring steel — better suited to structural sections, mixed materials, and applications where blade flexing could snap an all-hard blade.
Q: When should an HSS cobalt power hacksaw blade be specified?
HSS cobalt (M42) blades are specified for stainless steel, tough alloys, and high-production cutting where extended blade life is the priority. The cobalt content increases hot hardness and wear resistance, maintaining cutting efficiency over longer production runs than standard M2 HSS blades.
Q: Is cutting fluid required on a power hacksaw?
Yes. Cutting fluid is mandatory on power hacksaws — it cools the blade and the cut, lubricates the teeth, and extends blade life significantly compared to dry cutting. Always apply the appropriate cutting fluid for the material being cut; dry cutting on metal generates excessive heat that rapidly dulls or damages the blade teeth.