Hard magnetic, semi hard magnetic 2J07
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| 硬磁，半硬磁/Hard magnetic, semi hard magnetic | C | S | P | Mn | Si | Ni | Cr | Co | V | Mo | W | Ti | Fe | 其它元素 | |
| 不大于（MAX） | |||||||||||||||
| 2J04 | ≤0.12 | 0.02 | 0.025 | ≤0.7 | ≤0.7 | 5.3～6.7 | - | 44.0～46.0 | 3.5～4.5 | - | - | - | 余 Bla. | - | |
| 2J07 | ≤0.12 | 0.02 | 0.025 | ≤0.7 | ≤0.7 | ≤0.7 | - | 51.0～53.0 | 6.5～7.5 | - | - | - | 余 Bla. | - | |
| 2J09 | ≤0.12 | 0.02 | 0.025 | ≤0.7 | ≤0.7 | ≤0.7 | - | 51.0～53.0 | 8.5～9.5 | - | - | - | 余 Bla. | - | |
| 2J10 | ≤0.12 | 0.02 | 0.025 | ≤0.7 | ≤0.7 | ≤0.7 | - | 51.0～53.0 | 9.5～10.5 | - | - | - | 余 Bla. | - | |
| 2J31 | ≤0.12 | 0.02 | 0.025 | ≤0.7 | ≤0.7 | ≤0.7 | - | 51.0～53.0 | 10.8～11.7 | - | - | - | 余 Bla. | - | |
| 2J53 | ≤0.08 | 0.03 | 0.03 | 11.5～12.5 | ≤0.5 | 3.0～4.0 | - | - | - | 2.5～3.5 | - | 0.5～0.8 | 余 Bla. | - | |
| 2J84 | ≤0.03 | 0.02 | 0.02 | 0.2 | - | - | 25.5～27.0 | 14.5～16 | - | 3.0～3.5 | - | 0.5～0.8 | 余 Bla. | - | |
| 2J85 | ≤0.03 | 0.02 | 0.02 | 0.2 | 0.8～1.1 | - | 23.5～25.0 | 11.5～13 | - | - | - | - | 余 Bla. | - | |
