Press Brake Multiple Bend Chart

Rule of Thumb formula for making multiple bends on a press brake.  For shape shown, in mild steel with radii equal to metal thickness unless otherwise noted.

Tonnagechart.pdf

Shape Description Airform Bottoming
Vee Die 60 150
Wiping - 250
Offset 150 300/600
MTL.THK Offset 300 600
Channel 225 300
Vee Rib 200 600
W Die 300 600
Open Hat Channel 300 450
Sq. Hat Channel - 600
Perform Curl - 300
Perform Curl - 200
Close Curl - 300
Radius - 180/300
Shape Considerations

Large Radi
Angle Variation
Concave or
Convex Slides

Material Thk. Radi
Min. Angle
Variation
Maintain
Flatness

 

Multiply Metal Thickness by factor = Tons per Foot

Material Modifiers
Stainless Steel x 1.55
Aluminum: 
3303-H14 (1/2 hard) x 0.35
5052-H34 (1/2 hard) x 0.65
6061-T6 x 0.75