The use of low-alloy high-strength steel can reduce the size of structural parts and reduce weight. It must be noted that for components that may be bent, the allowable stress must be corrected to ensure the robustness of the structure. Sometimes low-alloy high-strength steel is used to replace EN 10028 P420ML2 impact energy, carbon structural steel without changing the cross-sectional size. Its sole purpose is to obtain a stronger and more durable structure without increasing weight.
EN 10028 P420ML2 impact energy, Chinese grade 45 steel belongs to high quality carbon structural steel. The application of EN 10028 P420ML2 impact energy, Chinese grade 45 steel depends on its various properties. EN 10028 P420ML2 impact energy, Chinese grade 45 steel has certain toughness and plasticity, high strength and good machinability. Good comprehensive mechanical properties of Chinese grade 45 steel can be obtained by quenching and tempering treatment. Chinese grade 45 steel is suitable for manufacturing high strength moving parts, such as air compressor, piston of pump, impeller of steam turbine, rolling shaft, connecting rod, worm, rack, gear and pin in heavy and general machinery.
Quenching is a common heat treatment process. It is the metal heat treatment process in which the EN 10028 P420ML2 impact energy metal workpiece is heated to a proper temperature and kept for a period of time, then immersed in the quenching medium for rapid cooling. Quenching can improve the strength and hardness of steel in a large range, and adjust the coordination between EN 10028 P420ML2 impact energy strength and hardness, plasticity and toughness. Quenching is generally used as the final heat treatment.
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