Usually When people calculate the Press Brake Tonnage, they can follow below press brake tonnage chart.
The value in the chart is the bending pressure when the length of the sheet is one meter: Example: S=4mm L=1000mm V=32mm Check the table P=330kN
This table is calculated based on the material with the strength σb=450N/mm2.
When bending other materials, the bending pressure is the product of the data in the table and the following coefficient;
Bronze (soft): 0.5;
Stainless steel: 1.5;
Aluminum (soft): 0.5 ;
Chrome molybdenum steel: 2.
Approximate calculation formula for bending pressure: P=650s2L/1000v, the unit of each parameter
P——kN
S——mm
L——mm
V——mm
