45# steel is a high-quality carbon structural steel (Introduction) with a carbon content of 0.42%-0.50%. It has high strength, hardness and good wear resistance. The compressive strength of 45# steel is 400-550MPa, and the specific value depends on the heat treatment process and the quality of the steel. Generally speaking, 45# steel that has been quenched and tempered has higher strength and hardness. (45# Price)

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