Material: DIN 17223 C-WIRE WERKSTOFF NO. 1.1200
Loops: Closed German loops in accordance with DIN 2097, random angle
d = Wire diameter in mm
De = External diameter in mm (D+d)
D = Mean diameter in mm (De minus d)
Lk = Unloaded length of spring body in mm
Lo = Unloaded length internal in loops
L1 = Loaded length internal in loops at F1
L2 = Loaded length internal in loops at F2