种类 | 名称 | C | Mn | Si | Ni | Cr |
A | Ni-Cr-Hc | 2.8~3.6 | ≤2.0 | ≤0.8 | 3.3~5.0 | 1.4~4.0 |
B | Ni-Cr-Lc | 2.4~3.0 | ≤2.0 | ≤0.8 | 3.3~5.0 | 1.4~4.0 |
C | Ni-Cr-GB | 2.5~3.7 | ≤2.0 | ≤0.8 | ≤4.0 | 1.0~2.5 |
D | Ni-HiCr | 2.5~3.6 | ≤2.0 | ≤2.0 | 4.5~7.0 | 7.0~11.0 |