碳素结构钢S35C S40C S45C S50C S55C S58C C5E4 C25M2 C30E4 C30M2 C35E4 C35M2 C40E4 C40M2 C45E4 C45M2 C50E4 C50M2 C55E4 C55M2 C60E4 C60M2 15Mn 20Mn 25Mn 30Mn 35Mn 40Mn 45Mn 50Mn 60Mn 65Mn 70Mn 1080 1084 1085 1016 1019 1022 1025 1026 1033 1037 1039 1046 1053 1051 1062 /高速钢 SKH-9 SKH-55 SKH-59 SKH-51 ASP-23 ASP-30 ASP-60 CPM-10V等