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[标准] 国内阀门材料常用技术标准 优质碳素结构钢牌号、统一数字代号及化学成分

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发表于 2015-9-30 09:06:56 | 显示全部楼层 |阅读模式
国内阀门材料常用技术标准 优质碳素结构钢牌号、统一数字代号及化学成分
序号统一数字代号牌号化学成分,%
CSiMnCrNiCu
不大于
1U2008008F0.05~0.11≤0.030.25~0.500.100.300.25
2U2010010F0.07~0.13≤0.070.25~0.500.150.300.25
3U2015015F0.12~0.18≤0.070.25~0.500.250.300.25
4U20082080.05~0.110.17~0.370.35~0.650.100.300.25
5U20102100.07~0.130.17~0.370.35~0.650.150.300.25
6U20152150.12~0.180.17~0.370.35~0.650.250.300.25
7U20202200.17~0.230.17~0.370.35~0.650.250.300.25
8U20252250.22~0.290.17~0.370.50~0.800.250.300.25
9U20302300.27~0.340.17~0.370.50~0.800.250.300.25
10U20352350.32~0.390.17~0.370.50~0.800.250.300.25
11U20402400.37~0.440.17~0.370.50~0.800.250.300.25
12U20452450.42~0.500.17~0.370.50~0.800.250.300.25
13U20502500.47~0.550.17~0.370.50~0.800.250.300.25
14U20552550.52~0.600.17~0.370.50~0.800.250.300.25
15U20602600.57~0.650.17~0.370.50~0.800.250.300.25
16U20652650.62~0.700.17~0.370.50~0.800.250.300.25
17U20702700.67~0.750.17~0.370.50~0.800.250.300.25
18U20752750.72~0.800.17~0.370.50~0.800.250.300.25
19U20802800.77~0.850.17~0.370.50~0.800.250.300.25
20U20852850.82~0.900.17~0.370.50~0.800.250.300.25
21U2115215Mn0.12~0.180.17~0.370.70~1.000.250.300.25
22U2120220Mn0.17~0.230.17~0.370.70~1.000.250.300.25
23U2125225Mn0.22~0.290.17~0.370.70~1.000.250.300.25
24U2130230Mn0.27~0.340.17~0.370.70~1.000.250.300.25
25U2135235Mn0.32~0.390.17~0.370.70~1.000.250.300.25
26U2140240Mn0.37~0.440.17~0.370.70~1.000.250.300.25
27U2145245Mn0.42~0.500.17~0.370.70~1.000.250.300.25
28U2150250Mn0.48~0.560.17~0.370.70~1.000.250.300.25
29U2160260Mn0.57~0.650.17~0.370.70~1.000.250.300.25
30U2165265Mn0.62~0.700.17~0.370.90~1.200.250.300.25
31U2170270Mn0.67~0.750.17~0.370.90~1.200.250.300.25
注:表1所列牌号为优质钢。如果是高级优质钢,在牌号后面加“A”(统一数字代号最后一位数字改为“3”);如果是特级优质钢,在牌号后面加“E”(统一数字代号最后一位数字改为“6”);对于沸腾钢,牌号后面为“F”(统一数字代号最后一位数字改为“0”);对于半镇静钢,牌号后面为“b”(统一数字代号最后一位数字改为“6”)

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