德国牌号 标准号: DIN EN ISO 4957 (02/2001) 归属: 工具钢、合金钢(tool steels, alloyed) 化学元素: Cr: 1.00 ~ 1.30 C: 0.18 ~ 0.24 Si: 0.15 ~ 0.35 Mn: 1.10 ~ 1.40 P: ≤0.030 S:≤0.030
1.212921MnCr51.216221MnCr5![](http://i03.c.aliimg.com/img/ibank/2010/517/115/207511715_473730869.jpg)
工具钢21MnCr5合金钢 200CrMn8 1.212921MnCr51.2162 ,200CrMn8 1.212921MnCr51.216221MnCr5/1.2162 31CrV13/1.2208 200CrMn8 1.2129 ![](http://i05.c.aliimg.com/img/ibank/2010/192/874/207478291_473730869.jpg)
21MnCr51.2162 X165CrV12 1.2201 140CrV1 1.2206 31CrV3J 1.2208 115CrV3..........