火力發(fā)電廠幾種新型耐熱鋼的化學(xué)成分金相組織和機(jī)械性能

1、火力發(fā)電廠幾種新型耐熱鋼的化學(xué)成分金相組織和機(jī)械性能表1 各種材料的化學(xué)成分鋼號(hào)及成分WB36T23T24T91T92TP304HTP347HT122SUP304HTP347HFGHR3CNF709C0.170.04-0.100.05-0.100.08-0.120.07-0.130.04-0.100.04-0.100.07-0.140.07-0.130.04-0.100.04-0.100.04-0.12Si0.25-0.500.500.15-0.450.20-0.500.500.751.000.500.301.000.751.00Mn0.80-1.200.10-0.600.30-0.700.3

2、0-0.600.30-0.602.002.000.701.002.002.001.50S0.020.010.010.010.010.030.030.010.010.030.030.01P0.0250.030.020.020.020.040.040.020.040.040.030.03Cr0.301.90-2.602.2-2.68.00-9.508.50-9.5018.0-20.017.0-20.010.0-12.517.0-19.017.0-20.024.0-26.018.0-22.0Mo0.25-0.500.05-0.300.90-1.100.85-1.050.30-0.600.25-0.6

3、01.00-2.00W1.45-1.751.50-2.001.50-2.50V0.20-0.300.20-0.300.18-0.250.15-0.250.15-0.30Nb.015-0.0450.08-0.200.06-0.100.04-0.09注10.04-0.100.30-0.60注10.20-0.60注20.10-0.40Ni1.00-1.300.400.408.00-11.09.00-13.000.507.50-10.509.00-13.0017.0-23.022.0-28.0Cu0.50-0.80Ti=0.05-0.100.30-1.702.5-3.52.5-3.5N0.0300.0

4、120.03-0.070.03-0.0700.04-0.100.05-0.120.15-0.350.05-0.20Al0.050.0300.020.040.040.040Ti=0.02-0.20B0.0005-0.0060.0015-0.0070.001-0.0060.0005-0.0050.002-0.010表2 各種材料的金相組織鋼號(hào)WB36T24T91T92TP304HTP347HTP347HFGT23T122SUP304HHR3CNF709組織貝氏體+少量鐵素體回火貝氏體回火索氏體回火馬氏體奧氏體奧氏體奧氏體回火貝氏體回火馬氏體奧氏體奧氏體奧氏體表3 各種材料的力學(xué)性能鋼號(hào)性能WB36

5、T24T91T92TP304HTP347HTP347HFGT23T122SUP304HHR3CNF709s440450415440205205205400400205295313b610-780580585620515515550510620550655637(%)192020203535352020353030未注明者均為最小值表4 各種鋼管的許用應(yīng)力鋼號(hào)WB36T24T91T92TP304HTP347HTP347HFGT23T122SUP304HHR3CNF709規(guī)定溫度許用應(yīng)力510500時(shí)的許用應(yīng)力約為46MPa115.1107132.39991.3122.6133.685.1116.

6、153811199126.1979990.298.5127.584114.4127.956677.289118.5829689.677.1115.782.7112.6121.159346.27193.7689388.257.988.981.3110.9116.162138.64870.35573.586.837.964.180.693.7111.66493047.5425466.89.642.778.569.691.867750.359.952.471.9704263037.244.839.356.973227.532.429.643.2表5 鋼管的使用溫度上限和推薦應(yīng)用的部件 鋼種使用溫度上限推薦應(yīng)用部件T24580過熱器、再熱器或水冷壁P24550集箱、蒸汽管道T23600過熱器、再熱器或水冷壁P23575集箱、蒸汽管道T91625過熱器、再熱器P91600集箱、蒸汽管