Traditional Culture Encyclopedia - Traditional festivals - What material is the torsion spring made of and what is the specific process?

What material is the torsion spring made of and what is the specific process?

Torsion springs are generally made of carbon spring steel wire or alloy spring steel wire.

Such as 72A, 82B, 65Mn, T9A, 60Si, 2Mn and so on.

The simplest process is

1 coil spring

Heat treatment to relieve stress

3 Bending and twisting arm

4 tail cutting

5 heat treatment and setting are enough.