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Can you flux-core welding mild steel?

Quick answer

Yes — yes, ideal outdoors. Flux-core on mild steel: match technique to the material; filler ER70S-6 MIG wire, E48xx stick rods, ER70S-2 TIG rod.

· · Technical guidance compiled from trade practice and manufacturer data; our source-verification program is in progress — see our editorial policy.

The verdict and why

Yes, ideal outdoors. The default Australian fabrication material — forgiving, cheap, every process works

Watch-outs

  • grind back to bright metal at least 20 mm each side of the joint
  • Prep: grind back to bright metal at least 20 mm each side of the joint

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