钢的牌号和化学成分
| 部位 | 钢类 | 序号 | 牌号 | 化学成分(质量分数)/% | ||||||||||||
| c | Si | Mn | cr | MO | V | Ti | Ni | cu | N | Fe | P | S | ||||
| 不大于 | ||||||||||||||||
| 基层 | 优质碳素钢 | 1 | 10 | 0. 07 ~0 . 13 | 0. 17 ~0 . 37 | 0. 35 ~0 . 65 | 0 . 025 | 0 . 015 | ||||||||
| 2 | 20G | 0. 17 ~0 . 23 | 0. 17 ~0 . 37 | 0. 35 ~0 . 65 | 0 . 025 | 0 . 015 | ||||||||||
| 3 | 20MnG | 0. 17 ~0 . 23 | 0. 17 ~0 . 37 | 0. 70 ~1 . 00 | 0 . 025 | 0 . 015 | ||||||||||
| 低合金钢 | 4 | 16Mn | 0. 12 ~0 . 20 | 0. 20 ~0 . 60 | 1 . 20 ~1 . 60 | 0 . 025 | 0 . 015 | |||||||||
| 合金钢 | 5 | 15MOG | 0. 12 ~0 . 20 | 0. 17 ~0 . 37 | 0. 40 ~—0. 80 | 0. 25 ~0 . 35 | 0 . 025 | 0 . 015 | ||||||||
| 6 | 12crMOG | 0. 08 ~0 . 15 | 0. 17 ~0 . 37 | 0. 40 ~0 . 70 | 0. 40 ~0 . 70 | 0. 40 ~0 . 55 | 0 . 025 | 0 . 015 | ||||||||
| 7 | 15crMOG | 0. 12 ~0 . 18 | 0. 17 ~0 . 37 | 0. 40 ~0 . 70 | 0. 80 ~1 . 10 | 0. 40 ~0 . 55 | 0 . 025 | 0 . 015 | ||||||||
| 8 | 12cr1MOVG | 0. 08 ~0 . 15 | 0. 17 ~0 . 37 | 0. 40 ~0 . 70 | 0. 90 ~1 . 20 | 0. 25 ~0 . 35 | 0. 15 ~0 . 30 | 0 . 025 | 0 . 010 | |||||||
| 复层 | 奥氏体型不锈钢 | 9 | 07cr19Ni10 | 0. 04 ~0 . 10 | ≤0 . 75 | ≤2 . 00 | 18. 0 ~20 . 0 | 8. 0 ~11 . 0 | 0 . 030 | 0 . 015 | ||||||
| 10 | 022cr19Ni10 | ≤0 . 030 | ≤1 . 00 | ≤2 . 00 | 18. 00 ~20 . 00 | 8. 00 ~12 . 00 | 0 . 035 | 0 . 030 | ||||||||
| 11 | 022cr17Ni12MO2 | ≤0 . 030 | ≤1 . 00 | ≤2 . 00 | 16 . 00 ~18 . 00 | 2 . 00 ~3 . 00 | 10. 00 ~14 . 00 | 0 . 035 | 0 . 030 | |||||||
| 双相型不锈钢 | 12 | 022cr22Ni5MO3N | ≤0 . 030 | ≤1 . 00 | ≤2 . 00 | 21 . 00 ~23 . 00 | 2 . 50 ~3 . 50 | 4. 50 ~6 . 50 | 0. 08 ~0 . 20 | 0 . 030 | 0 . 020 | |||||
| 耐蚀合金 | 13 | NS1402 | ≤0 . 050 | ≤0 . 50 | ≤1 . 00 | 19 . 50 ~23 . 50 | 2 . 50 ~3 . 50 | 0. 60 ~1 . 20 | 38. 0 ~46 . 0 | 1 . 00 ~3 . 00 | 0 . 030 | 0 . 030 | ||||
| 14 | NS3102 | ≤0 . 15 | ≤0 . 50 | ≤1 . 00 | 14. 00 ~17 . 00 | ≥72 . 00 | ≤0 . 50 | 6 . 00 ~10 . 00 | 0 . 035 | 0 . 015 | ||||||