Mechanical & Civil Engineering
Sheet Metal Punching Tonnage & Die Clearance Calculator
Calculate the punching force (tonnage) and recommended die clearance for a sheet metal blanking operation.
Your inputs
Change any value to update the result instantly.
Punching force
15.737 US tons
Punching force
1,40,000 N
Die clearance (per side)
0.16 mm
Cut perimeter
200 mm
What this calculator does
Sheet Metal Punching Tonnage & Die Clearance Calculator: Applies the standard shop-floor or joint-design relationship so the force, speed, allowance or strength can be worked out from the process inputs.
What your result means
The headline figure is the process setting or joint strength implied by your inputs. Treat it as a starting point to validate against the tool maker's data and a trial part.
Formula and working
F = perimeter × thickness × shear strength; c = clearance% × thickness
- 1
Collect the inputs
Cut perimeter length = 200 mm; Material thickness = 2 mm; Material shear strength = 350 MPa; Die clearance (% of thickness) = 8 %
- 2
Apply the formula
F = perimeter × thickness × shear strength; c = clearance% × thickness
- 3
Result
Punching force = 15.737 US tons
Frequently asked questions
Symbols and assumptions
- perimeter
- Cut perimeter length (mm)
- thickness
- Material thickness (mm)
- shearStrength
- Material shear strength (MPa)
- clearancePct
- Die clearance (% of thickness) (%)
- • Nominal tooling, material and process conditions are assumed; machine, tool-wear and lubrication effects vary in practice.
- • Recommended cutting data always sits inside the tool maker's published envelope, which takes priority.
Sources and review
Reviewed 2026-09-22 · Next review 2027-09-22
- • This is an educational estimate for learning and checking, not a design deliverable.
- • Real design must follow the governing code or standard for your jurisdiction and be reviewed and signed off by a qualified engineer.
- • Safety factors, load combinations and material certification are the responsibility of the designer, not of this page.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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