SAE1020 S20C,CK22 C22 SAE1045 S45,S45C C45E CK45 SUJ2,40CR 100CR6 65SI7,SAE5120 SCR420 20CR4,SAE5140 SCR440 41CR4,Y15PB 12L14 1215,20CRMO 30CRMO 42CRMO,11SMN30 11SMNPB37,SAE 4130 4140 4135,SCM420 SCM435 SCM440,25CRMO4 42CRMO4 Y15,9SMN28 11SMNPB30,50CRV4 2
