国内阀门材料常用技术标准 合金结构钢(续)

来源:网络  作者:网络转载   2019-10-03 阅读:272

国内阀门材料常用技术标准 合金结构钢(续)

钢组

统一数字

代 号

牌 号化 学 成 分 , %
CSiMnCrMoNiWBAlTiV
CrMn49A2215215CrMn0.12~0.180.17~0.371.10~1.400.40~0.70       
50A2220220CrMn0.17~0.230.17~0.370.90~1.200.90~1.20       
51A2240240CrMn0.37~0.450.17~0.370.90~1.200.90~1.20       
CrMnSi52A2420220CrMnSi0.17~0.230.90~1.200.80~1.100.80~1.10       
53A2425225CrMnSi0.22~0.280.90~1.200.80~1.100.80~1.10       
54A2430230CrMnSi0.27~0.340.90~1.200.80~1.100.80~1.10       
55A2430330CrMnSiA0.28~0.340.90~1.200.80~1.100.80~1.10       
56A2435335CrMnSiA0.32~0.391.10~1.400.80~1.101.10~1.40       
CrMnMo57A3420220CrMnMo0.17~0.230.17~0.370.90~1.201.10~1.400.20~0.30      
58A3440240CrMnMo0.37~0.450.17~0.370.90~1.200.90~1.200.20~0.30      
CrMnTi59A2620220CrMnTi0.17~0.230.17~0.370.80~1.101.00~1.30     0.04~0.10 
60A2630230CrMnTi0.24~0.320.17~0.370.80~1.101.00~1.30     0.04~0.10 
CrNi61A4020220CrNi0.17~0.230.17~0.370.40~0.700.45~0.75 1.00~1.40     
62A4040240CrNi0.37~0.440.17~0.370.50~0.800.45~0.75 1.00~1.40     
63A4045245CrNi0.42~0.490.17~0.370.50~0.800.45~0.75 1.00~1.40     
64A4050250CrNi0.47~0.540.17~0.370.50~0.800.45~0.75 1.00~1.40     
65A4112212CrNi20.10~0.170.17~0.370.30~0.600.60~0.90 1.50~1.90     
66A4212212CrNi30.10~0.170.17~0.370.30~0.600.60~0.90 2.75~3.15     
67A4220220CrNi30.17~0.240.17~0.370.30~0.600.60~0.90 2.75~3.15     
68A4230230CrNi30.27~0.330.17~0.370.30~0.600.60~0.90 2.75~3.15     
69A4237237CrNi30.34~0.410.17~0.370.30~0.601.20~1.60 3.00~3.50     
70A4312212Cr2Ni40.10~0.160.17~0.370.30~0.601.25~1.65 3.25~3.65     
71A4320220Cr2Ni40.17~0.230.17~0.370.30~0.601.25~1.65 3.25~3.65     
CrNiMo72A5020220CrNiMo0.17~0.230.17~0.370.60~0.950.40~0.700.20~0.300.35~0.75     
73A5040340CrNiMoA0.37~0.440.17~0.370.50~0.800.60~0.900.15~0.251.25~1.65     
CrMnNiMo74A5018318CrNiMnMoA0.15~0.210.17~0.371.10~1.401.00~1.300.20~0.301.00~1.30     
CrNiMoV75A5145345CrNiMoVA0.42~0.490.17~0.370.50~0.800.80~1.100.20~0.301.30~1.80    0.10~0.20
CrNiW76A5218318Cr2Ni4WA0.13~0.190.17~0.370.30~0.601.35~1.65 4.00~4.500.80~1.20    
77A5225325Cr2Ni4WA0.21~0.280.17~0.370.30~0.601.35~1.65 4.00~4.500.80~1.20    

   

    1 本标准中规定带“A” 字标志的牌号仅能作为高级优质钢订货,其他牌号按优质钢订货。

    2 根据需方要求,可对表中各牌号按高级优质钢(指不带“A”)或特级优质钢(全部牌号)订货,只需在所订牌号后加“A”或“E”字标志(对有“A”字牌号应先去掉

    “A”)。需方对表中牌号化学成分提出其他要求可按特殊要求订货。

    3 统一数字代号系根据GB/T 17616 规定列入,优质钢尾部数字为“2” ,高级优质钢( 带“A”钢)尾部数字为“3”,特级优质钢(带“E”钢)尾部数字为“6”。

    4 稀土成分按0.05%计算量加入,成品分析结果供参考。

标签: 结构钢
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