Alloy steel grades: 45Cr
Standard: GB / T 3077-1988
Chemical Composition: Carbon C: 0.42 ~ 0.49 ,Si Si: 0.17 ~ 0.37,Manganese Mn: 0.50 ~ 0.80 ,S S: to allow the residual content ≤ 0.035 ,P P: ≤ 0.035 to allow the residual content ,Chromium Cr: 0.80 ~ 1.10 ,Ni-Ni: ≤ 0.030 to allow the residual content ,Copper Cu: ≤ 0.030 to allow the residual content
Mechanical Properties:
Tensile strength σb (MPa): ≥ 1030 (105)
Yield strength σs (MPa): ≥ 835 (85)
Elongation δ5 (%): ≥ 9
Reduction of area ψ (%): ≥ 40
Impact energy Akv (J): ≥ 39
Impact toughness αkv (J/cm2): ≥ 49 (5)
Hardness: ≤ 217HB
Sample size: Sample size is 25mm rough
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