Buy Filler Metals Online in Australia
Welding Filler Metals
Filler metals are the consumable weld material deposited into the joint to form the weld bead. The filler metal must be compatible with the base material and matched to the welding process — MIG (GMAW), TIG (GTAW), flux-core (FCAW), or stick (SMAW). Correct filler metal selection is as important as technique; a filler metal of the wrong specification for the base material produces a weld that may be mechanically inferior, susceptible to cracking, or incompatible with post-weld treatment requirements. AIMS Industrial supplies welding filler metals for carbon steel, stainless steel, and aluminium applications.
MIG Welding Wire (GMAW)
Solid MIG wire for carbon steel applications is typically ER70S-6 — a copper-coated mild steel wire with a deoxidised formulation that tolerates moderate mill scale and surface rust better than ER70S-3. Available in 0.6mm, 0.8mm, 0.9mm, and 1.0mm diameters for different material thicknesses. Wire spool sizes range from 5kg to 15kg; larger spools reduce the frequency of changeovers in production welding but require a drive system capable of handling the weight. Stainless steel MIG wire (ER308L for 304 stainless, ER316L for 316 grade) is fed with a dedicated spool gun or through a stainless-rated liner.
TIG Welding Rod (GTAW)
TIG filler rods are cut-length wire added manually to the weld pool. ER70S-2 or ER70S-6 for mild steel; ER308L, ER309L, or ER316L for stainless steel applications; ER4043 or ER5356 for aluminium. TIG welding demands clean filler — contaminated rod introduces porosity into the weld. Store TIG rods in their original tube and keep them away from moisture, oil, and workshop contamination.
Flux-Core Wire (FCAW)
Flux-core wire allows MIG welding without shielding gas in outdoor and windy conditions where gas coverage cannot be maintained. The flux core provides shielding from within the wire. Gas-shielded flux-core wire (dual-shield) uses both internal flux and external shielding gas for higher deposition rates and better quality welds indoors. Self-shielded flux-core is the correct choice for outdoor structural welding. Flux-core wire produces slag that must be removed between passes.
Order Filler Metals from AIMS
AIMS Industrial stocks welding filler metals for the most common base materials and welding processes. For help selecting the correct filler for your base material and process, contact our team.
Storage and Supply
Proper storage of welding filler metals maintains the product condition needed for consistent weld quality. MIG wire should be kept sealed in its original packaging in a dry environment to prevent oxidation of the copper coating; exposed wire spools should be covered when not in use. TIG rod should remain in its original tube between uses. Low-hydrogen stick electrodes must be stored dry — even brief moisture exposure can cause hydrogen-induced cracking in critical structural welds. AIMS maintains stock of common filler metal specifications for prompt supply.