碳素结构钢:C40 C40E4、C40M2C40E C40R C45 C45E C45R C50E C50R C55 C55E C55RC25CK30CK40 Q195 Q215 Q235 Q275 Q255 Q295 Q345 Q390 Q420 Q460 08F 10F 15F 15Mn 20Mn 25Mn 30Mn 35Mn 40Mn 45Mn 50Mn 60Mn 70Mn YF35V YF40V YF45V YF35MnV YF40MnV YF45MnV F45V F35MnVN F40MnV 55Ti 60Ti 70Ti AF34C10 AF37C12 AF42C20 AF50C30 AF50S AF55C35 AF60C40 AF65C45 AF70C55