Press Brake Calculator

A professional tool for estimating bending force,bend angle, and setup values with greater accuracy.

ROUTE

Technical Notes:

1. Recommended V-die opening (V) selection:

✔ For S < 10 mm → V=8 × S

✔ For 10 mm ≤ S ≤ 25 mm → V = 10 × S

✔ For S > 25 mm → V = 12 × S

2. The bending force formula is based on air bending conditions and assumes mild steel with a tensile strength (σb) of 450 N/mm² as the reference material.

3. For materials with different tensile strengths, the calculated bending force shall be corrected proportionally by applying the corresponding material factor (K).

4. The calculated results are for reference only. Actual required tonnage shall be determined based on tooling configuration, bending method (air bending, bottoming, coining), material grade, and processing conditions.

Plate Thickness (S, mm)

Bending Length (L, mm)

V-Die Opening (V)

Material Selection

Custom Material Factor (Optional)

Recommended V-Die opening will be automatically suggested after entering plate thickness.

Estimated Bending Force

0.00 Ton

Enter the required parameters above and click "Calculate" to obtain the estimated bending force.

Material Tensile Strength Table

The bending force calculation is referenced to mild steel with a tensile strength (σb) of 450 N/mm², for materials with different tensile strengths, the required bending force must be corrected proportionally using the material factor (K).

Material	Tensile Strength σb (N/mm2)	Material Factor (K)	Notes
Mild Steel	450	1.00	Reference material for standard calculation
StainlessSteel	600 - 700	1.30 - 1.50	Higher strength, increased forming resistance
Aluminum	200 - 300	0.50 - 0.70	Lower strength, reduced bending force required
Copper	220 - 350	0.60 - 0.80	Varies depending on temper condition
Brass	300 - 500	0.70 - 1.00	Depends on alloy composition
High Strength Steel	550 - 800	1.20 - 1.60	Requires higher tonnage and safety margin