Circular Part Draw Force Estimator

Click here for a description of the calculator

Instructions: Input values in the blue boxes. See table for yield strengths. Note: This provides an estimate of the tonnage necessary to draw form a circular part. Actual tonnage should be confirmed with the manufacturer of the die.
Yield Strength (PSI)
Material Thickness (inches)
Draw Diameter (inches)
Blank Diameter (inches)
Drawing Factor
Holding Tonnage
Estimate *
Tonnage Required (Draw Tonnage)
Total Tonnage
* Holding or cushion tonnage is estimated at 1/3 of draw tonnage. Actual tonnage will vary as required to achieve a quality part.
 

RECTANGULAR PART DRAW FORCE ESTIMATOR
Instructions: Input values in the blue boxes. See table for yield strengths. Note: This provides an estimate of the tonnage necessary to draw form a rectangular part. Actual tonnage should be confirmed with the manufacturer of the die.
Tensile Strength (PSI)
Material Thickness (inches)
Corner Radius (inches)
Length of Straight Sides (inches)
Corner Constant - Will vary from 0.5 - 2.0 for shallow to deep draw
Straight Side Constant - Will vary from 0.2 with no cushion to 1.0 with no material flow.
Holding Tonnage
Estimate *
Tonnage Required (Draw Tonnage)
Total Tonnage

* Holding or cushion tonnage is estimated at 1/3 of draw tonnage. Actual tonnage will vary as required to achieve a quality part.