Mild Steel Flux Cored Wire - E71T-GS (Non Gas wire)
E71T-GS self-shielded flux-cored wire is a gasless FCAW wire (AWS A5.20) designed for single-pass welding on thin mild steel — no shielding gas required. It runs on DC− (DCEN), making it the standard choice for small inverter and flux-core-only MIG machines, hobby work, and quick repairs. Common sizes .030", .035".
| AWS Classification | AWS A5.20 E71T-GS |
| Shielding | Self-shielded — no gas required |
| Polarity | DC− (DCEN / straight polarity) |
| Position / Passes | All positions, single-pass |
Frequently Asked Questions
Can I run E71T-GS without gas?
Yes — that's its purpose. E71T-GS is self-shielded and runs on DC− (DCEN), so it works on gasless flux-core machines with no bottle or regulator.
E71T-GS vs E71T-11?
E71T-GS is for single-pass welds on thinner steel. If you need multi-pass capability or thicker material, choose self-shielded E71T-11.
