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1、合金结构钢的牌号及化学成分(摘自GB/T30771999)(表一)牌号化学成分(质量分数)，%C(碳)Si(硅)Mn(锰)Mo(钼)V(钒)B(硼)20Mn20.170.240.170.371.401.8030Mn20.270.340.170.371.401.8035Mn20.320.390.170.371.401.8040Mn20.370.440.170.371.401.8045Mn20.420.490.170.371.401.8050Mn20.470.550.170.371.401.8020MnV0.170.240.170.371.301.600.070.1227SiMn0.240.321

2、.101.401.101.4035SiMn0.320.401.101.401.101.4042SiMn0.390.451.101.401.101.4020Mn2MoV0.170.230.921.202.202.600.300.400.050.1225Mn2MoV0.220.280.921.202.202.600.300.400.050.1237Mn2MoV0.330.390.600.901.601.900.400.500.050.1240B0.370.440.170.370.600.900.00050.003545B0.420.490.170.370.600.900.00050.003550B

3、0.470.550.170.370.600.900.00050.003540MnB0.370.440.170.371.101.400.00050.003545MnB0.420.490.170.371.101.400.00050.0035(表二)牌号化学成分(质量分数)，%C(碳)Si(硅)Mn(锰)Mo(钼)Cr(铬)V(钒)Ti(钛)20MnMo0.160.220.170.370.901.200.200.300.400.1015MnVB0.120.180.170.371.201.600.070.120.400.1020MnVB0.170.230.170.371.201.400.070.124

4、0MnVB0.370.440.170.371.101.400.050.1020MnTiBRE0.170.240.170.341.301.6025MnTiBRE0.220.280.200.451.301.6015Cr0.120.180.170.370.400.700.701.0020Cr0.170.240.170.370.500.800.701.0030Cr0.270.340.170.370.500.800.801.1035Cr0.320.390.170.370.500.800.801.1040Cr0.370.440.170.370.500.800.801.1045Cr0.420.490.170

5、.370.500.800.801.1050Cr0.470.540.170.370.500.800.801.1038CrSi0.350.431.001.300.300.601.301.6012CrMo0.080.150.170.370.400.700.400.550.400.7015CrMo0.120.180.170.370.400.700.400.550.801.1020CrMo0.170.240.170.370.400.700.150.250.801.10(表三)牌号化学成分(质量分数)，%C(碳)Si(硅)Mn(锰)Mo(钼)Cr(铬)V(钒)其他30CrMo0.260.340.170.3

6、70.400.700.150.250.801.1035CrMo0.320.400.170.370.400.700.150.250.800.7042CrMo0.380.450.170.370.500.800.150.250.901.2012CrMoV0.080.150.170.370.400.700.250.350.300.600.150.3035CrMoV0.300.380.170.370.400.700.200.301.001.300.100.2012CrMoV0.080.150.170.370.400.700.250.350.901.200.150.3025CrMoVA0.220.290.

7、170.370.400.700.250.351.501.800.150.3025CrMo1VA0.220.290.170.370.500.800.901.102.102.500.300.5038CrMoAl0.350.420.200.450.300.600.150.251.351.65Al：0.701.1040CrV0.370.440.170.370.500.800.801.100.100.2050CrVA0.470.540.170.370.500.800.801.100.100.2015CrMn0.120.180.170.371.101.400.400.70(表四)牌号化学成分(质量分数)，

8、%C(碳)Si(硅)Mn(锰)Mo(钼)Cr(铬)Ni(镍)V(钒)20CrMn0.170.230.170.370.901.2040CrMn0.370.450.170.370.901.200.901.2020CrMnSi0.170.230.901.200.801.100.801.1025CrMnSi0.220.290.901.200.801.100.801.1030CrMnSi0.270.340.901.200.801.1035CrMnSiA0.320.391.101.400.801.101.101.4020CrMnMo0.170.230.170.370.901.200.200.301.101

9、.4040CrMnMo0.370.450.170.370.901.200.200.300.901.2020CrMnTi0.170.230.170.370.801.101.001.3030CrMnTi0.240.320.170.370.801.101.001.3020CrNi0.170.230.170.370.400.700.450.751.001.4040CrNi0.370.440.170.370.500.800.450.751.001.4045CrNi0.420.490.170.370.500.800.450.751.001.4050CrNi0.470.540.170.370.500.800

10、.450.751.001.4012CrNi20.100.170.170.370.300.600.600.901.502.0012CrNi30.100.170.170.370.300.600.600.902.753.2520CrNi30.170.240.170.370.300.600.600.902.753.2530CrNi30.270.340.170.370.300.600.600.902.753.2537CrNi30.340.410.170.370.300.601.201.603.003.5012Cr2Ni40.100.170.170.370.300.601.251.753.253.7520

11、Cr2Ni40.170.230.170.370.300.601.251.753.253.7520CrNiMo0.170.230.170.370.600.950.200.300.400.700.350.7540CrNiMoA0.370.440.170.370.500.800.150.250.600.901.251.7545CrNiMoVA0.420.490.170.370.500.800.200.300.801.101.301.800.100.2018Cr2Ni4WA0.130.190.170.370.300.601.351.654.004.5025Cr2Ni4WA0.210.280.170.370.300.601.351.654.004.50B(硼)其他

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