PASS calculation of punching force
Formula for calculating the punching force:
Example Round:
U = d x P
U = 10 x 3,14
U ~ 31,4 mm
F (in kN) = (U x t x Rm x 0,9 x f)/1000
F = punch force in kN
U = circumference or perimeter of the punch shape (in mm)
t = sheet thickness (in mm)
Rm = tensile strength (in N/mm²)
for Stainless Steel (1.4301) 720 N/mm²
for Steel (DC01) 420 N/mm²
for Alu (AIMg3) 220 N/mm²
f = factor between 0,5 - 0,95 when using punches with shear
