GB/T 42CrMo alloy steel round bar Impact energy

GB/T 42CrMo alloy steel round bar is ultra high strength steel, high strength and toughness, hardenability is also better, no temper brittleness, 42CrMo alloy steel round bar has higher fatigue limit and resistance to repeated impact capability, good low temperature impact toughness after quenching.

42CrMo alloy steel round bar is suitable for manufacturing requires a certain strength and toughness of large and medium-sized plastic molds. for example, Locomotive traction with the large gear, supercharger drive gear, pressure vessels, gear, rear axle and so on.

42CrMo alloy steel round bar Chemical composition

C: 0.38 ~ 0.45% Si: 0.17 ~ 0.37% Mn: 0.50 ~ 0.80% S: allow the residual content ≤0.035% P: allow the residual content ≤0.035% Cr: 0.90 ~ 1.20% Ni: to allow the residual content ≤0.030% Cu: allow the residual content ≤0.030% Mo: 0.15 ~ 0.25%

42CrMo steel round bar Mechanical Properties

Tensile strength σb (MPa): ≥1080 (110)

Yield strength σs (MPa): ≥930 (95)

Elongation δ5 (%): ≥12

Reduction of area ψ (%): ≥45

Impact energy Akv (J): ≥63

Impact toughness αkv (J / cm2): ≥78 (8)

Hardness: ≤217HB [1]

Sample size: Sample size is 25mm rough

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