40CrNi2Mo round steel, 40CrNi2Mo alloy structural steel, 40CrNi2Mo is one of the alloy structural steel, also known as alloy steel, it is on the basis of high-quality carbon structural steel, appropriate to add one or more alloy elements (the total content is not more than 5%) and made of steel.
40CrNi2Mo Mechanical property:
Tensile strength σ B (MPA): ≥ 980 (100)
Yield strength σ s (MPA): ≥ 835 (85)
Elongation δ 5 (%): ≥ 12
Reduction of area ψ (%): ≥ 55
Impact energy Akv (J): ≥ 78
Impact toughness value α kV (J / cm2): ≥ 98 (10)
Hardness: ≤ 269HB
【 Chemical Composition 】
C
0.37~0.45
Si
0.15~0.35
Mn
0.50~0.80
S
≤0.030
P
≤0.025
Cr
0.60~0.90
Ni
1.25~1.65
Cu
≤0.025
Mo
0.15~0.25
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