60CrMnMoA spring steel heat treatment and 60CrMnA steel with the same mechanical properties and high tempering stability, good hardenability. 60CrMnMoA spring steel is mainly used in the manufacture of vehicles, tractors and heavy industrial load, stress and a larger spring diameter larger (up to 100mm) of the coil spring.

Chemical composition
Carbon C: 0.56 ~ 0.64


Si Si: 0.17 ~ 0.37


Manganese Mn: 0.70 ~ 1.00


Sulfur S: ≤ 0.030


Phosphorus P: ≤ 0.030


Chromium Cr: 0.70 ~ 0.90


Ni-Ni: ≤ 0.35


Copper Cu: ≤ 0.25


Mo Mo: 0.25 ~ 0.35

Mechanical properties
Hardness: hot-rolled + heat treatment, ≤ 321HB; cold-drawn + heat treatment, ≤ 321HB