
| C | Mn | Si | S | P | Cr | Ni | Mo | Cu |
| ≤0.08 | 1.00~2.50 | 0.30~0.65 | ≤0.030 | ≤0.030 | 19.50~22.0 | 9.00~11.00 | - | ≤0.75 |
| 0.05 | 1.79 | 0.48 | 0.016 | 0.018 | 19.80 | 9.85 | - | 0.18 |
| C | Mn | Si | S | P | Cr | Ni | Mo | Cu |
| ≤0.08 | 1.00~2.50 | 0.30~0.65 | ≤0.030 | ≤0.030 | 19.50~22.0 | 9.00~11.00 | - | ≤0.75 |
| 0.05 | 1.79 | 0.48 | 0.016 | 0.018 | 19.80 | 9.85 | - | 0.18 |