40CrNiMoA

Chemical composition:

C   0.37~0.44

Si  0.17~0.37

Mn  0.50~0.80

S ≤0.025

P  ≤0.025

Cr  0.60~0.90

Ni  1.25~1.65

Cu  ≤0.025

Mo  0.15~0.25

Used for high strength,high toughness,large section size and the important parts in the machines.

Alloy structural steel 40CrNiMoA