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合金结构钢的牌号及化学成分(摘自GBT30771999)

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(表一)C(碳)Si(硅)Mn(锰)Mo(钼)V(钒)B(硼)20Mn20.17~0.240.17~0.371.40~1.8030Mn20.27~0.340.17~0.371.40~1.8035Mn20.32~0.390.17~0.371.40~1.8040Mn20.37~0.440.17~0.371.40~1.8045Mn20.42~0.490.17~0.371.40~1.8050Mn20.47~0.550.17~0.371.40~1.8020MnV0.17~0.240.17~0.371.30~1.600.07~0.1227SiMn0.24~0.321.10~1.401.10~1.4035SiMn0.32~0.401.10~1.401.10~1.4042SiMn0.39~0.451.10~1.401.10~1.4020Mn2MoV0.17~0.230.92~1.202.20~2.600.30~0.400.05~0.1225Mn2MoV0.22~0.280.92~1.202.20~2.600.30~0.400.05~0.1237Mn2MoV0.33~0.390.60~0.901.60~1.900.40~0.500.05~0.1240B0.37~0.440.17~0.370.60~0.900.0005~0.003545B0.42~0.490.17~0.370.60~0.900.0005~0.003550B0.47~0.550.17~0.370.60~0.900.0005~0.003540MnB0.37~0.440.17~0.371.10~1.400.0005~0.003545MnB0.42~0.490.17~0.371.10~1.400.0005~0.0035(表二)C(碳)Si(硅)Mn(锰)Mo(钼)Cr(铬)V(钒)20MnMo0.16~0.220.17~0.370.90~1.200.20~0.3015MnVB0.12~0.180.17~0.371.20~1.600.07~0.1220MnVB0.17~0.230.17~0.371.20~1.400.07~0.1240MnVB0.37~0.440.17~0.371.10~1.400.05~0.1020MnTiBRE0.17~0.240.17~0.341.30~1.6025MnTiBRE0.22~0.280.20~0.451.30~1.6015Cr0.12~0.180.17~0.370.40~0.700.70~1.0020Cr0.17~0.240.17~0.370.50~0.800.70~1.0030Cr0.27~0.340.17~0.370.50~0.800.80~1.1035Cr0.32~0.390.17~0.370.50~0.800.80~1.1040Cr0.37~0.440.17~0.370.50~0.800.80~1.1045Cr0.42~0.490.17~0.370.50~0.800.80~1.10合金结构钢的牌号及化学成分(摘自GB/T3077—1999)牌 号化 学 成 分 (质量分数),%牌号化 学 成 分(质量分数),%50Cr0.47~0.540.17~0.370.50~0.800.80~1.1038CrSi0.35~0.431.00~1.300.30~0.601.30~1.6012CrMo0.08~0.150.17~0.370.40~0.700.40~0.550.40~0.7015CrMo0.12~0.180.17~0.370.40~0.700.40~0.550.80~1.1020CrMo0.17~0.240.17~0.370.40~0.700.15~0.250.80~1.10(表三)C(碳)Si(硅)Mn(锰)Mo(钼)Cr(铬)V(钒)30CrMo0.26~0.340.17~0.370.40~0.700.15~0.250.80~1.1035CrMo0.32~0.400.17~0.370.40~0.700.15~0.250.80~0.7042CrMo0.38~0.450.17~0.370.50~0.800.15~0.250.90~1.2012CrMoV0.08~0.150.17~0.370.40~0.700...

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合金结构钢的牌号及化学成分(摘自GBT30771999)

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