国内阀门材料常用技术标准 弹簧钢化学成分

来源:网络  作者:网络转载   2019-10-03 阅读:972

国内阀门材料常用技术标准 弹簧钢化学成分

序号

统一数

字代号

牌号b化学成分(质量分数)%
CSiMnCrVWBNiCuaPS
不大于
1U20652650.62~0.700.17~0.370.50~0.80≤0.25   0.250.250.0350.035
2U20702700.62~0.750.17~0.370.50~0.80≤0.25   0.250.250.0350.035
3U20852850.82~0.900.17~0.370.50~0.80≤0.25   0.250.250.0350.035
4U2165365Mn0.62~0.700.17~0.370.90~1.20≤0.25   0.250.250.0350.035
5A7755255SiMnVB0.52~0.600.70~1.001.00~1.30≤0.350.08~0.16 0.0005~0.00350.350.250.0350.035
6A1160260Si2Mn0.56~0.641.50~2.000.70~1.00≤0.35   0.350.250.0350.035
7A1160360Si2MnA0.56~0.641.60~2.000.70~1.00≤0.35   0.350.250.0250.025
8A2160360Si2CrA0.56~0.641.40~1.800.40~0.700.70~1.00   0.350.250.0250.025
9A2860360Si2CrVA0.56~0.641.40~1.800.40~0.700.90~1.200.10~0.20  0.350.250.0250.025
10A2155355SiCrA0.51~0.591.20~1.600.50~0.800.50~0.80   0.350.250.0250.025
11A2255355SiMnA0.52~0.600.17~0.370.65~0.950.65~0.95   0.350.250.0250.025
12A2260360CrMnA0.56~0.640.17~0.370.70~1.000.70~1.00   0.350.250.0250.025
13A2350350CrVA0.46~0.540.17~0.370.50~0.800.80~1.100.10~0.20  0.350.250.0250.025
14A2261360CrMnBA0.56~0.640.17~0.370.70~1.000.70~1.00  0.0005~0.00400.350.250.0250.025
15A2730330W4Cr2VA0.26~0.340.17~0.37≤0.402.00~2.500.50~0.804.00~4.50 0.350.250.0250.025

  a  根据需方要求,并在合同中注明,钢中残余铜含量应不大于0.20%。

  b  28MnSiB 的化学成分见表B.1。

标签: 弹簧钢
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