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Standard
GB6479-2013, Grade:20,16Mn
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Chemical composition
| Grade | 化Chemical composition, % | ||||||||||
| C | Si | Mn | Cr | Mo | V | W | Nb | Ni | P | S | |
| 10 | 0.07 ~0.14 |
0.17 ~0.37 |
0.35 ~0.65 |
- | - | - | - | - | - | ≤0.030 | ≤0.030 |
| 20 | 0.17 ~0.24 |
0.17 ~0.37 |
0.35 ~0.65 |
- | - | - | - | - | - | ≤0.030 | ≤0.030 |
| 16Mn | 0.12 ~0.20 |
0.20 ~0.60 |
1.20 ~1.60 |
- | - | - | - | - | - | ≤0.030 | ≤0.030 |
| 15MnV | 0.12 ~0.18 |
0.20 ~0.60 |
1.20 ~1.60 |
- | - | 0.04 ~0.12 |
- | - | - | ≤0.030 | ≤0.030 |
| 10MoWVNb | 0.07 ~0.13 |
0.50 ~0.80 |
0.50 ~0.80 |
- | 0.60 ~0.90 |
0.30 ~0.50 |
0.50 ~0.90 |
0.06 ~0.12 |
- | ≤0.030 | ≤0.030 |
| 12CrMo | 0.08 ~0.15 |
0.17 ~0.37 |
0.40 ~0.70 |
0.40 ~0.70 |
0.40 ~0.55 |
≤0.030 | ≤0.030 | ||||
| 15CrMo | 0.12 ~0.18 |
0.17 ~0.37 |
0.40 ~0.70 |
0.80 ~1.10 |
0.40 ~0.55 |
- | - | - | - | ≤0.030 | ≤0.030 |
| 1Cr5Mo | ≤ 0.15 | ≤ 0.50 | ≤ 0.60 | 4.00 ~6.00 |
0.40 ~0.60 |
- | - | - | ≤ 0.60 | ≤0.030 | ≤0.030 |
| 12Cr2Mo | 0.08 ~0.15 |
≤ 0.50 | 0.40 ~0.70 |
2.0 ~2.50 |
0.90 ~1.20 |
- | - | - | - | ≤0.030 | ≤0.030 |
| 12SiMoVNb | 0.08 ~0.14 |
0.50 ~0.80 |
0.60 ~0.90 |
- | 0.90 ~1.10 |
0.30 ~0.50 |
- | 0.04 ~0.08 |
- | ≤0.030 | ≤0.030 |
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mechanical properties
| Grade | Tensile strength, Mpa | Yield point, Mpa | Elongation min, % |
| 10 | 335~490 | 205 | 24 |
| 20 | 410~550 | 245 | 24 |
| 16Mn | 490~670 | 320 | 21 |
| 15MnV | 510~690 | 350 | 19 |
| 12CrMo | 410~560 | 205 | 21 |
| 15CrMo | 440~640 | 235 | 21 |