1.4845 预硬镜面模具钢 X12CrNi2521,XM12 CUZN40 磷青铜,2.1016 2.1020 2.1030 CUSN4 SUSN6 SUSN8 黄铜2.0220 2.0230 2.0240 2.0250 2.0335 2.0321 2.0360 CUZN5 CUZN10 CUZN15 CUZN20 CUZN36 CUZN37 CUZN40 其优点: (1)进行