High-hardenability Mn-Cr series carburizing steel
A technology of high hardenability and carburized steel, applied in the field of alloy structural steel, can solve the problem that Mn-Cr series carburized steel cannot be applied to heavy-duty gearboxes and drive axle gears of commercial vehicles, etc. The effect of reducing intergranular oxidation and improving surface corrosion resistance
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Embodiment 1
[0030] A high hardenability Mn-Cr series carburizing steel, its composition and mass percentage content are: C 0.18, Si 0.20, Mn 1.40, P 0.035, S 0.028, Cr 1.35, Mo 0.10, Al 0.017, N 0.010, Ni 0.10, Cu 0.11, B0.0001, the rest are Fe and unavoidable impurities.
Embodiment 2
[0032]A high hardenability Mn-Cr series carburizing steel, its composition and mass percentage content are: C 0.20, Si 0.19, Mn 1.38, P 0.013, S 0.021, Cr 1.39, Mo 0.022, Al 0.022, N 0.013, Ni 0.14, Cu 0.10, B0.00025, the rest are Fe and unavoidable impurities.
Embodiment 3
[0034] A high hardenability Mn-Cr series carburizing steel, its composition and mass percentage content are: C 0.21, Si 0.18, Mn 1.33, P 0.012, S 0.019, Cr 1.40, Mo 0.021, Al 0.029, N 0.018, Ni 0.14, Cu 0.13, B0.0003, the rest are Fe and unavoidable impurities.
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