






| 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% |



Adjusting Tonnage for Controlled Radius Forming
When using radius tools, the necessary bending force (tonnage) is typically higher than that required for air bending with standard V-dies. This is because radius bending often involves coining or bottoming the material to fully set the desired radius and minimize springback. Operators must accurately calculate the required force and adjust the press brake down-stroke to ensure full penetration without overloading the machine or causing excessive material thinning at the bend point.
