The performance of this steel is better than that of 30Mn2 steel. It has higher hardenability, with a critical hardenability diameter of 8-22mm in water, good machinability, moderate cold deformation plasticity and weldability; in addition, the toughness of the steel is not much reduced during heat treatment. But it has quite high strength and wear resistance, especially still high toughness during water quenching; but this steel is highly sensitive to white spots, and has a tendency to temper brittleness and overheat sensitivity during heat treatment.
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