Alloy steel round bar
Standard: Chinese GB, ASTM, DIN
Material: 42CrMo, 42CrMo4, 4040
Diameter: 12-400mm length: 6m or more
For industry, etc

Chemical composition:
C: 0.38-0.45
Si: 0.17~0.37
Mn: 0.50~0.80
S: ≤ 0.035
P: ≤ 0.035
Cr: 0.90~1.20
Ni: ≤ 0.030
Cu: ≤ 0.030
Mo: 0.15~0.25
Mechanical propertity:

Tensile strength: Σb (MPa)≥ 1080(110)
Yield strength: Σs (MPa)≥ 930(95)
Elongation: Σs (MPa)≥ 930(95)
Hardness: ≤ 217HB 

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