42CrMo steel plate belongs to plastic mold steel in mold steel from the perspective of material classification. It has good mechanical properties and machinability, and is widely used. 42CrMo steel plate mainly includes two types of materials: plate and round bar. Plate is used for mold. The processing and production of the round bars are used for the direct machining of mechanical parts, which has been recognized by the industry.
42CrMo steel plate is an ultra-high-strength steel with high strength and toughness, good hardenability, no obvious temper brittleness, high fatigue limit and multiple impact resistance after quenching and tempering, and good low-temperature impact toughness. 42CrMo steel plate is suitable for manufacturing large and medium-sized plastic molds that require certain strength and toughness.
Quenching specification for 42CrMo steel plate, general quenching and tempering specification: Quenching temperature 1000~1050℃, quenching oil or gas, hardness ≥60HRC; 42CrMo steel plate tempering temperature 160~180℃, tempering time 2h, or tempering temperature 325~ 375℃, tempering times 2~3 times.
