MP-79 · MANUFACTURING AND DFM
Sheet Metal Bend Allowance
Calculate a preliminary sheet-metal bend allowance from inside radius, thickness, bend angle, and entered K factor.
Preliminary design support. Your inputs and results stay in this browser.
WHAT THIS SCREEN ANSWERS
Bend allowance connects formed geometry with a flat pattern, but K factor is a process-dependent assumption. The screen applies entered radius, thickness, angle, and K factor transparently. Use the visible relationship before moving to catalog selection.
Material, tooling, radius, grain, bend method, springback, and supplier practice can change the real flat result. Confirm material, thickness, tooling, bend test, K factor, flat-pattern method, and supplier process. The remaining uncertainty is an engineering input, not noise.
Bend allowance connects formed geometry with a flat pattern, but K factor is a process-dependent assumption. Material, tooling, radius, grain, bend method, springback, and supplier practice can change the real flat result. The displayed relation is intentionally simpler than a release calculation.
The screen applies entered radius, thickness, angle, and K factor transparently. Confirm material, thickness, tooling, bend test, K factor, flat-pattern method, and supplier process. The decision remains specific to this application because bend allowance connects formed geometry with a flat pattern, but k factor is a process-dependent assumption. Turn the remaining unknowns into a short verification list.