scm440对应国内什么材料？

SCM440 corresponds to the material 42CrMo in China. This material is classified as a high-strength steel and exhibits good toughness along with favorable hardenability. It does not display significant brittleness after tempering and has a high fatigue limit as well as good resistance to multiple impact shock. Furthermore, SCM440 maintains good impact toughness at low temperatures. Due to these characteristics, SCM440 steel is suitable for manufacturing large and medium-sized plastic molds that require a certain level of strength and toughness.