TRUE FABRICATE

Precision Engineering Tools. Calculate raw metallurgical weight limits and dynamic sheet metal bend allowances instantly.

Material Parameters

Calculated Metrics
Total Est. Weight 17.04 lbs
Standard K-Factor 0.440
Bend Allowance 0.218 in
Bend Deduction 0.244 in

Advanced Bending Specs

Precise metal forming requires balancing material elasticity with tool geometry. The dynamic formula options listed below determine exact blank flat lengths prior to press brake deformation.

  • Bend Allowance (BA): The length of the neutral axis between the bend lines. Formula: BA = P * (Angle * (R + (K * T))) / 180
  • Bend Deduction (BD): The amount of material removed from the sum of the flange lengths to reach the flat size. Formula: BD = (2 * OSC) - BA
  • Outside Setback (OSC): Distance from the apex of the bend to the tangent line. Formula: OSC = tan(Angle / 2) * (R + T)

Fabrication Glossary

K-Factor

The ratio of the neutral axis position to the material thickness. It moves closer to the inside radius during sharper bends.

Neutral Axis

The area within the sheet plate depth where metal fibers experience neither stretching (tension) nor compression during forming.

Material Density

The mass per unit volume of an alloy. Mild steel operates at roughly 0.284 lbs/in³, while aluminum is significantly lighter at 0.098 lbs/in³.

Frequently Asked Questions

Why does K-Factor default to 0.440?

A K-factor value between 0.44 and 0.45 serves as the industry standard benchmark for standard structural steel plates bent over typical air-bending lower V-dies.

How does bend radius change outcomes?

A tighter inside punch radius forces the inner surface to pinch harder, altering the stretch profile and requiring higher tonnage limits to prevent grain cracking.

Can I use this for non-90 degree calculations?

Yes. The calculation engine processes dynamic angle matrices to ensure accurate material setback transformations for acute and obtuse air bends.

Our industrial fabrication calculation suite processes material profile specifications utilizing standardized density matrix metrics. By parsing physical attributes including plate length, width profiles, and targeted alloy thickness increments, engineers can determine structural weights and accurate bend clearances safely on open-source edge nodes.