FORMULA Thickness:<2.6mm=Tx6 3.0mm—8.0mm=Tx10 9.0mm—12.0mm=Tx10 >14.0mm=Tx12
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T=Thickness V=V width MF=Minimum bendable flange length
IR=Inner bending radius on sheet metal.
Above bending force for mild steel, stress 45-50kg S/CM2,
For other sheet metal, please refer to the right chart.
Note: the chart is based on 88 degrees, force increase for acute angles.