不同牌号碳钢的化学成分表.doc

不同牌号碳结钢的化学成分表序号统一数字代号牌号化学成分.% CSiMnCrNiCu不大于 1U2008008F0.05O.110.030.250.500.100.300.25 2U2010010FO.070.130.07O.250.500.150.300.25 3U2015015F0.120.180.07O.250.500.25O.300.25 4U20082080.050.110.170.37O.350.650.10O.300.25 5U2010210O.07O.130.170.37O.350.65O.15O.300.25 6U20152150.120.18O.170.370.350.65O.25O.300.25 7U20202200.170.230.170.37O.350.65O.25O.300.25 8U2025225O.220.29O.170.370.500.80O.250.300.25 9U20302300.270.340.170.37O.500.80O.25O.300.25 10U20352350.320.39O.170.370.500.80O.25O.300.25 11U20402400.370.44O.170.370.500.800.Z5O.300.25 12U2045245O.42O.50O.170.370.500.80O.25O.300.25 13U2050250O.470.55O.170.37O.500.80O.25O.300.25 14U2055255O.520.600.170.370.500.80O.250.300.25 15U2060260O.570.650.170.370.500.800.25O.300.25 16U20652650.620.70O.170.370.500.80O.25O.300.25 17U2070270O.670.75O.170.370.500.800.250.300.25 18U2075275O.720.800.170.370.500.80O.250.300.25 19U2080280O.770.85O.170.370.500.800.250.300.25 20U2085285O.820.900.170.370.500.800.25O.300.25 21U2115215MnO.120.180.170.37O.701.000.25O.300.25 22U2120220Mn0.170.230.170.370.70I.000.25O.300.25 23U2125225Mn0.220.290.170.37O.701.00O.25O.300.25 24U2130230MnO.270.340.170.37O.701.00O.25O.300.25 25U2135235M13O.320.390.170.37O.701.00O.250.300.25 26U2140240M13O.370.440.170.370.701.000.25O.300.25 27U2145245MnO.420.50O.170.37O.701.000.25O.300.25 28U2150250Mn0.480.560.170.37O.701.00O.25O.300.25 29U2160260Mn0.57O，650.170,37O.701.00O.25O.300.25 30U2165265M13O.620.700.170.37O.901.20O.25O.300.25 31U2170270M130.670.750.170.37O.901.20O.25O.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