Product Details
Alloy steel: 40CrNiMoA
Standard: GB / T 3077-1988
Chemical Composition: Carbon C: 0.37 ~ 0.44 ,Si Si: 0.17 ~ 0.37 ,Manganese Mn: 0.50 ~ 0.80 ,S S: to allow the residual content ≤ 0.025 ,P P: allow the residual content ≤ 0.025 ,Chromium Cr: 0.60 ~ 0.90 ,Ni-Ni: 1.25 ~ 1.65 ,Copper Cu: ≤ 0.025 to allow the residual content ,Mo Mo: 0.15 ~ 0.25
Mechanical Properties:
Tensile strength σb (MPa): ≥ 980 (100)
Yield strength σs (MPa): ≥ 835 (85)
Elongation δ5 (%): ≥ 12
Reduction of area ψ (%): ≥ 55
Impact energy Akv (J): ≥ 78
Impact toughness αkv (J/cm2): ≥ 98 (10)
Hardness: ≤ 269HB
Sample size: Sample size is 25mm rough