材质
CK67 CK75 C75S 51CrV4 CK45 SAE 1050 SK5
硬度
29-55HRC的淬火和回火,下面19HRC退火
材料-3
SAE1045 1050mm 1055mm 1060mm 1065mm 1070mm 1075mm 1085mm 1095mm
材料-4
C1045 1050mm 1055mm 1060mm 1065mm 1070mm 1075mm 1085mm 1095mm
材料-5
C45E C50E C60E C70E C75E
钢级
SK85 65mn SK5 C50 C55 C60 C65 C62 C67 C70 C75 C80 C95 60SI2MN 51CrV4