E71T-11 vs E71T-GS: Multi-Pass vs Single-Pass Flux-Core Wire
Both are self-shielded flux-core wires that work without gas. E71T-11 is multi-pass rated with all-position capability. E71T-GS is single-pass only but works in all positions.
Key Differences
| Attribute | E71T-11 | E71T-GS |
|---|---|---|
| Difference 1 | E71T-11 is classified for multi-pass welding with verified mechanical properties | |
| Difference 2 | E71T-GS is single-pass only, the GS suffix means the AWS does not test or guarantee mechanical properties beyond single-pass | |
| Difference 3 | E71T-11 runs DCEN | E71T-GS runs DCEN |
| Difference 4 | Both are self-shielded with no gas required |
Use E71T-11 when:
Any structural or multi-pass application. When weld strength and mechanical properties need to be verifiable. Most serious fabrication work.
Use E71T-GS when:
Light-duty single-pass work: tacking, sheet metal, auto body, hobby welding. Applications where code compliance is not required. Typically less expensive per spool.
How E71T-11 and E71T-GS Work Together
Many hardware stores only stock E71T-GS because it is cheaper and marketed to hobbyists. For anything beyond hobby work, use E71T-11. The mechanical properties of E71T-GS vary by manufacturer because AWS does not test them.
Common Mistake With E71T-11
Using E71T-GS for multi-pass structural welds. The GS classification explicitly means single-pass only. Multi-pass deposits may have unpredictable properties.
Where to Buy
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Data sourced from AWS A5.20.