Required press force at 90° air bending, force in ton/mtr.
The charts below give the appropriate tonnage to air bend mild steel.
Bending force for other metals:
| Soft aluminium |
Tons per unit length x 50% |
| Aluminium alloys heat treated |
Tons per unit length x 100% |
| Stainless |
Tons per unit length x 150% |