Sheet Metal Punching Force Calculator
Press tonnage to punch a hole — perimeter × thickness × shear strength.
A 30 mm hole in 3 mm MS needs ~9.5 tonnes. Shear (angled) punches cut this 30–60% — and remember stripping force adds ~10–20% on the return stroke.
Formula
Sheet Metal Punching Force Calculator is a free punching force for design engineers, metallurgists and QA 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 Sheet Metal Punching Force Calculator
Press tonnage to punch a hole — perimeter × thickness × shear strength. The calculation implements F = perimeter × t × τ_shear (Press tool design handbooks). A 30 mm hole in 3 mm MS needs ~9.5 tonnes. Shear (angled) punches cut this 30–60% — and remember stripping force adds ~10–20% on the return stroke.
How to use Sheet Metal Punching Force Calculator
- 1Enter Cut perimeter in mm (30Ø hole = 94.2 mm).
- 2Enter Sheet thickness in mm.
- 3Enter Shear strength in MPa (≈0.8×UTS: MS 330 · SS304 520 · Al-5052 140).
- 4Read Punching force, Press tonnage instantly — no submit button needed.
- 5Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Sheet Metal Punching Force Calculator?
- ✓Implements the standard formula — F = perimeter × t × τ_shear
- ✓Reference cited on-page: Press tool design handbooks
- ✓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 Sheet Metal Punching Force Calculator use?+
It computes F = perimeter × t × τ_shear, per Press tool design handbooks. 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?+
A 30 mm hole in 3 mm MS needs ~9.5 tonnes. Shear (angled) punches cut this 30–60% — and remember stripping force adds ~10–20% on the return stroke.
Where do the material property defaults come from?+
Defaults are standard handbook values (ASM, manufacturer datasheets, the cited standard). Always substitute certified values from your material's test certificate for critical work.
Is the Sheet Metal Punching Force Calculator 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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