MIG Wire in Ireland: Choosing Aluminium and Steel Wire Without Wasting a Spool
Wire is the cheapest part of a MIG setup and the first thing blamed when a weld looks bad. Sometimes that’s fair. More often the wire is fine, and the match is wrong: mild steel wire on stainless, soft aluminium pushed through a liner built for steel, a spool bought because it was on offer. This guide covers MIG wire for aluminium and the steel wires most Irish workshops run every day, along with the rules on what goes with what. Get the match right, and the machine suddenly seems much better than you thought. Start With the Metal You’re Welding The base metal decides the wire. Gas, drive rolls and liner all follow from that choice. Base metal Wire Shielding Good to know Mild steel Solid G3Si1 Argon/CO₂ mix The everyday choice for fabrication Mild steel, outdoors Flux-cored Self-shielded types need none Copes with wind Stainless 308L or 316L Argon-based, low CO₂ Match the wire to the grade Aluminium 4043 or 5356 100% argon Needs a different feed setup Thin galvanised sheet Brazing wir...