Air Bending Tonnage Chart: Mild Steel & Stainless Steel

How to Read the Pressure Chart

If the material thickness and inner radius are known, the following information can be obtained from the chart below:
1. Tonnage required to bend material of 1-meter length
2. V-width to be used
3. Minimum flange length

Air Bending Tonnage Chart

Air Bending Tonnage Chart for Mild Steel

Air Bending Tonnage Chart for Mild Steel
Air Bending Tonnage Chart for Mild Steel

Air Bending Tonnage Chart for Stainless Steel

Air Bending Tonnage Chart for Stainless Steel
Air Bending Tonnage Chart for Stainless Steel

Material Thickness and V-Width

The distance across the die opening is known as the V-width. The appropriate V-width should be selected in accordance with the thickness of the material being bent. The table below shows the optimum relationship between the material thickness and V-width, although in practice this relationship is often determined by specific requirements, including flange lengths (b), the components inner bend radius(ir)and the tonnage capacity of the press brake machine and tooling.

Relationship of Material Thickness (t) and V-Width

Material Thickness (t) mm0.5-2.53.0-8.09.0-10.012.0 or more
V-Width6xt8xt10xt12xt
Scroll to Top