表面硬化结构钢:C10C15E4C15M220Cr420CrS416MnCr516MnCrS520MnCr520MnCrS520NiCrMo220NiCrMoS218CrNiMo720Cr4H20CrS4H………部分结构钢如下:25Mn4RR30MnB5RRAF34C10AF37C12AF42C20AF50C30AF50SAF55C35AF65***0AF70C55C35RR***0RR***5RRC50RRC60RRC68RRC75RRC90RRC100RRC125RR15CR2RR16MnCr5RR20MnB5RR25B30RRC10EC10RC15EC15RC16EC16R10NiCr5-414NiCr13-415NiCr316MnCr516MnCrB516MnCrS516NiCr416NiCrS417Cr317CrNi6-617CrS317NiCrMo6-417NiCrMoS6-418CrMo418CrMoS418CrNiMo7-618NiCr6-4)