The Bend Allowance Calculator is an indispensable tool in sheet metal fabrication, helping engineers and fabricators determine the exact length of material required for a bend. This ensures accurate flat pattern development, minimizing material waste and enhancing precision in manufacturing workflows. Our calculator makes it easy to compute bend allowance for various materials and bend angles.
Formula:
The Bend Allowance (BA) is calculated using the formula:
BA = A × (π/180) × (R + K × T)
- A: Bend Angle in degrees (the angle the material is bent through, typically 0-180 degrees)
- π: Pi (approximately 3.14159)
- R: Inside Bend Radius (the radius of the bend on the inside of the material)
- K: K-Factor (a constant representing the neutral axis's location, typically 0.3 to 0.5)
- T: Material Thickness (the thickness of the sheet metal)