国内阀门材料常用技术标准 低温压力容器用低合金钢锻件、化学成分
钢号 | 化 学 成 分 , % | |||||||||||
C | Si | Mn | Mo | Cr | Ni | V | Nb | Als | P | S | Cu | |
≤ | ||||||||||||
16MnD | 0.13~0.18 | 0.20~0.60 | 1.20~1.60 | — | ≤0.30 | ≤0.40 | — | ≤0.030 | ≥0.015 | 0.025 | 0.015 | 0.25 |
20MnMoD | 0.16~0.22 | 0.17~0.37 | 1.10~1.40 | 0.20~0.35 | ≤0.30 | ≤0.40 | — | — | ≥0.015 | 0.025 | 0.015 | 0.25 |
08MnNiCrMoVD | ≤0.10 | 0.20~0.40 | 1.10~1.40 | 0.20~0.50 | 0.20~0.60 | 1.20~1.60 | 0.02~0.06 | — | — | 0.020 | 0.015 | 0.25 |
10Ni3MoVD | 0.18~0.12 | 0.15~0.25 | 0.70~0.90 | 0.20~0.30 | ≤0.30 | 2.50~3.00 | 0.02~0.06 | — | — | 0.015 | 0.015 | 0.25 |
09MnNiD | ≤0.12 | 0.15~0.35 | 1.20~1.60 | — | ≤0.30 | 0.45~0.85 | — | ≤0.050 | ≥0.015 | 0.020 | 0.015 | 0.25 |
注 1 对真空碳脱氧钢,允许Si含量小于或等于0.12%。 2 08MnNiCrMoVD钢的焊接冷裂纹敏感性组成Pcm≤0.25%。 Pcm=C+Si/30+Mn/20+Cu/20+Cr/20+Ni/60+Mo/15+V/10+5B(%)。 |
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