1、 表 427 热轧工字钢的尺寸规格符号意义：h高度；r 1腿端圆弧半径；b腿宽度；l惯性矩；d腰厚度；W抗弯截面系数；t平均腿厚度；i惯性半径；C形心；r内圆弧半径；S半截面的静力矩。参考数值尺 寸mmXX Y-Y型号h b d t r r1截面面积em2理论质量(kgm) 1x/cm4Wx/cm3ixcm Ix:SxIycm4 Wy/cm3iycm1O 100 68 4.5 7.6 6.5 3.4 14.345 11.261 245 49 4.14 8.59 33O 9.72 1.5212.6 126 74 5.0 8.4 7O 3.5 18.118 14.223 488 77.5 5.20
2、 10.8 46.9 12.7 1.6114 140 80 5.5 9.1 7.5 3.8 21.516 16.890 712 102 5.76 12O 64.4 16.1 1.7316 160 88 6O 9.9 8.0 4.0 26.131 20.513 1130 141 6.58 13.8 93.1 21.2 1.8918 180 94 6.5 10.7 8.5 4.3 30.756 24.143 1660 185 7.36 15.4 122 26O 2.0020a 200100 7.0 11.4 9.0 4.5 35.578 27.929 2370 237 8.15 17.2 158
3、31.5 2.1220b 200102 9O 11.4 9.0 4.5 39.578 31.069 2500 250 7.96 16.9 169 33.1 2.0622a 220110 7.5 12.3 9.5 4.8 42.128 33.070 3400 309 8.99 18.9 225 40.9 2.3122b 220112 9.5 12.3 9.5 4.8 46.528 36.524 3570 325 8.78 18.7 239 42.7 2.2725a 250116 8O 13O 10.0 5O 48541 38.105 5020 402 1O2 21.6 280 48.3 2.40
4、25b 25011810O 13.0 10O 5.0 53.541 42.030 5280 423 9.94 21.3 309 52.4 2.4028a 280122 8.5 13.7 10.5 5.3 55.404 43.492 7110 508 11.3 24.6 345 56.6 2.5028b 280124 10.5 13.7 1O5 5.3 61.004 47.888 7480 534 11.1 24.2 379 61.2 2.4932a 320130 9.5 15.0 11.5 5.8 67.156 52.717 11100 692 12.8 27.5 460 70.8 2.623
5、2b 320132 11.5 15O 11.5 5.8 73.556 57.741 11600 726 12.6 27.1 502 76O 2.6132c 320134 13.5 15O 115 5.8 79.956 62.765 12200 760 12.3 26.8 544 81.2 2.61参考数值尺 寸mmXX Y-Y型号h b d t r r1截面面积em2理论质量(kgm) 1x/cm4Wx/cm3ixcm Ix:SxIycm4 Wy/cm3iycm36a 36013610O 15.8 12O 6.0 76.480 60.037 15800 875 14.4 30.7 552 81
6、.2 2.6936b 360138 12.0 15.8 12O 6.0 83.680 65.689 16500 919 14.1 30.3 582 84.3 2.6436c 360140 14.0 15.8 12.0 6O 90.880 71.341 17300 962 13.8 29.9 612 87.4 2.6040a 400142 10.5 16.5 12.5 6.3 86.112 67.598 21700 1090 15.9 341 660 93.2 2.7740b 400144 12.5 16.5 12.5 6.3 94.112 73.878 22800 1140 15.6 33.6
7、 692 96.2 2.7140c 400146 14.5 16.5 12.5 6.3 102.112 80.158 23900 1190 15.2 33.2 727 99.6 2.6545a 450150115 18.0 13.5 6.8 102.446 80.420 22200 1430 17.7 38.6 855 114 2.8945b 450152 13.5 18.0 13.5 6_8 111.446 87.485 33800 1500 17.4 38O 894 118 2.8445c 450154 15.5 18O 13.5 6.8 120.446 94.550 35300 1570
8、 17.1 37.6 938 122 2.7950a 500158 12.0 20.0 14.0 7O 119,304 93.654 46500 1860 19.7 42.8 1120 142 3.0750b 50016014O 20.0 14.0 7O 129.304101.504 48600 1940 19.4 42.4 1170 146 3.0150c 50016216O 20O 14.0 7.0 139.304109.354 50600 2080 19O 41.8 1220 151 2.9656a 560166 12.5 21.0 14.5 7.3 135.435106.316 656
9、00 2340 22.0 47.7 1370 165 3.1856b 560168 14.5 21O 14.5 7.3 146.635115.108 68500 2450 21.6 47.2 1490 174 3.1656c 560170 16.5 21O 14.5 7.3 157.835123.900 71400 2550 21.3 46.7 1560 183 3.1663a 63017613O 22O 15O 7.5 154.658121.407 93900 2980 24.5 54.2 1700 193 3.3163b 630178 15.0 22O 15O 7.5 167.258131
10、.298 98100 3160 24.2 53.5 1810 204 3.2963c 630180 17.0 22.0 15O 7.5 179.858141.189102000 3300 23.8 52.9 1920 214 3.2712 120 74 5.0 8.4 7O 3.5 17.818 13.987 436 72.7 4.95 10.3 46.9 12.7 1.6224a 240116 8O 13.0 1OO 5.0 47.741 37.477 4570 381 9.77 20.7 280 48.4 2.4224b 2401181OO 13.0 10.0 5O 52.541 41.2
11、45 4800 400 9.57 20.4 297 50.4 2.3827a 270122 8.5 13.7 10.5 5.3 54.554 42.825 6550 485 10.9 23.8 345 56.6 2.5127b 270124 10.5 13.7 1O5 5.3 59.954 47.064 6870 509 10.7 22.9 366 58.9 2.4730a 300126 9O 14.4 11O 5.5 61.254 48.084 8950 597 12.1 25.7 400 63.5 2.5530b 300128 11.0 14.4 11.0 5.5 67.254 52.79
12、4 9400 627 11.8 25.4 422 65.9 2.5030c 300130 13.0 14.4 11O 5.5 73.254 57.504 9850 657 11.6 25O 445 68.5 2.4655a 550168 12.5 21O 14.5 7.3 134.185105.335 62900 2290 21.6 46.9 1370 164 3.1955b 550168 14.5 21O 14.5 7.3 145.185113.970 65600 2390 21.2 46.4 1420 170 3.1455c 550170 16.5 21O 14.5 7.3 156.185122.605 68400 2490 20.9 45.8 1480 175 3.08所列工字钢是经供需双方协议，可以供应的型号。（2） 允许偏差 见表 428表 4_28 热轧工字钢的允许偏差 （mm）型 号 8、1O、12、12.6、14 16、18 20、22、24、25、27、28、30 32、36 40 45、50、55、56、63高度 h 士 2O 3O 4.0腿宽 b 士 2.0 2.5 3.0 3.5 4O腰厚 d 0.5 士 0.5 0.7 士 O8 土 0.9弯腰挠度 不应超过 O15d通常长度 519m 619m
