BBN supply chemical composition of NM450 cold brittleness

chemical composition of NM450, Hot rolled seamless tube is usually produced on automatic tube rolling mill. After the solid tube blank is inspected and the surface defects are removed, it is cut to the required length, centered on the end face of the piercing end of the tube blank, then sent to the heating furnace for heating, and perforated on the piercing machine.

chemical composition of NM450 annealing is to heat the steel to 30 ~ 50℃ above the critical temperature, keep it in the heat treatment furnace for a period of time, and then cool it down to room temperature with the furnace. The purpose of chemical composition of NM450 annealing is to refine the grain of steel, eliminate internal stress and reduce hardness, improve cutting performance, increase toughness and plasticity, and facilitate welding and rolling processes. chemical composition of NM450 annealing can be complete annealing, incomplete annealing, stress relief annealing, isothermal annealing and spheroidizing annealing.

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Mechanical properties of NM360 wear-resistant steel plate: after treatment, various performance samples are taken for testing. It can be seen that the new wear-resistant plate can obtain more uniform mechanical properties in a large size range, which not only has high strength and hardness, but also has high toughness. The chemical composition of NM450, wear-resistant steel plate can also obtain different strength and toughness matching through reasonable allocation of carbon, silicon and manganese elements, which can meet different service conditions.