TIG Amperage Calculator (by Thickness)
Starting TIG amps for steel and stainless from thickness — the one-amp-per-thou bench rule, with the aluminium correction.
Set the machine 10–15% above the rule and ride the foot pedal down — running out of amps mid-puddle is worse than having spare. Aluminium dumps heat so fast that the start needs the extra 25%; the end needs less as the part heats. Match tungsten size with our tungsten amperage tool.
Formula
TIG Amperage Calculator (by Thickness) is a free tig welding amperage for welding engineers, fabricators and CWI inspectors — instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About TIG Amperage Calculator (by Thickness)
Starting TIG amps for steel and stainless from thickness — the one-amp-per-thou bench rule, with the aluminium correction. The calculation implements A ≈ 1 amp per 0.001″ (steel/SS, DCEN); aluminium on AC needs ~25% more (AWS TIG handbooks; Miller TIG settings guide). Set the machine 10–15% above the rule and ride the foot pedal down — running out of amps mid-puddle is worse than having spare. Aluminium dumps heat so fast that the start needs the extra 25%; the end needs less as the part heats. Match tungsten size with our tungsten amperage tool.
How to use TIG Amperage Calculator (by Thickness)
- 1Enter Material thickness in mm.
- 2Read Steel / stainless (DCEN), Aluminium (AC, +25%), Working range ±10% instantly — no submit button needed.
- 3Need US units? Flip the SI/Imperial toggle and every field converts.
Why use TIG Amperage Calculator (by Thickness)?
- ✓Implements the standard formula — A ≈ 1 amp per 0.001″ (steel/SS, DCEN); aluminium on AC needs ~25% more
- ✓Reference cited on-page: AWS TIG handbooks; Miller TIG settings guide
- ✓One-click SI ⇄ Imperial toggle — values convert in place, physics stays in SI
- ✓Live worked example: the substitution recomputes from your numbers
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the TIG Amperage Calculator (by Thickness) use?+
It computes A ≈ 1 amp per 0.001″ (steel/SS, DCEN); aluminium on AC needs ~25% more, per AWS TIG handbooks; Miller TIG settings guide. The formula is displayed under the result along with a worked example substituted with your own inputs.
What should I keep in mind when using this calculator?+
Set the machine 10–15% above the rule and ride the foot pedal down — running out of amps mid-puddle is worse than having spare. Aluminium dumps heat so fast that the start needs the extra 25%; the end needs less as the part heats. Match tungsten size with our tungsten amperage tool.
Does this follow AWS/IS welding codes?+
Each tool implements the formula from the cited code or handbook (AWS D1.1, IS 800, ISO/EN). Qualified WPS values always govern over any calculator for code work.
Is the TIG Amperage Calculator (by Thickness) free to use?+
Yes — completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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