Springback Calculator
Calculate springback angle and required over-bend compensation from material properties and bend geometry.
Inputs
°
mm
mm
MPa
MPa
Results
Required Over-Bend Angle
90.45°
Springback Angle0.45°
Springback0.5%
Springback Factor0
Compensated Die Radius1.99 mm
RecommendationLow springback — standard tooling should work
How to Use This Calculator
- Enter the desired final bend angle (degrees).
- Set material thickness and inside bend radius.
- Enter yield strength (MPa) and elastic modulus (GPa) from the material data sheet.
- Review the springback angle (degrees) and the overbend angle to use in the press brake program.
- Test a sample part and measure actual springback -- adjust the overbend angle iteratively for tight tolerances.
How the result changes with Desired Bend Angle
| Desired Bend Angle | Required Over-Bend Angle |
|---|---|
| 19 | 19.1° |
| 64 | 64.32° |
| 117 | 117.59° |
| 162 | 162.81° |
What each input means
- Desired Bend Angle
- Target bend angle after springback.
- Material Thickness
- Sheet metal thickness.
- Inside Bend Radius
- Inside radius of the bend.
- Yield Strength
- Material yield strength (mild steel: 250, stainless: 450, aluminum: 150).
- Elastic Modulus
- Young's modulus (steel: 200,000, aluminum: 69,000, copper: 117,000).
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersDesired Bend Angle = 90, Material Thickness = 1.5, Inside Bend Radius = 2, Yield Strength = 250 = 5 input(s) provided
- Calculate Required Over-Bend AngleRequired Over-Bend Angle90.45 = 90.45
- Calculate Springback AngleSpringback Angle0.45 = 0.45
- Calculate SpringbackSpringback0.5 = 0.5%
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