Sheet metal · stainless
304 stainless bend allowance estimators
Austenitic stainless with higher springback and tonnage than mild steel.
K-factor 0.440Min radius factor 1.5TTonnage 1.5× mild steelSupplier verification required
| Gauge | Nominal thickness | Prefilled calculator |
|---|---|---|
| 22 ga | 0.0312 in / 0.792 mm | 22-gauge bend allowance estimator |
| 20 ga | 0.0375 in / 0.953 mm | 20-gauge bend allowance estimator |
| 18 ga | 0.050 in / 1.27 mm | 18-gauge bend allowance estimator |
| 16 ga | 0.0625 in / 1.588 mm | 16-gauge bend allowance estimator |
| 14 ga | 0.0781 in / 1.984 mm | 14-gauge bend allowance estimator |
| 12 ga | 0.1094 in / 2.779 mm | 12-gauge bend allowance estimator |
| 10 ga | 0.1406 in / 3.571 mm | 10-gauge bend allowance estimator |
Assumptions
Verify before production
These links use nominal material-specific gauge thicknesses and BendMath default forming assumptions. Confirm bend deduction, springback, tooling capacity, grain direction, and material condition with supplier data and a shop test bend.
Default K-factor, minimum-radius factor, and tonnage multiplier for 304 stainless are starting estimates. See /reference/data-sources/ for provenance.