工字钢 槽钢 截面特性
表1-6 热轧普通工字钢规格及截面特性（GB 706-88）
I——截面惯性矩；
W——截面抵抗矩；
S——半截面面积矩；
t——截面回转半径。
型号
尺寸
mm
截面
面积
A
cm2
每米
重量
kg/m
截面特性
x-x轴y-y轴
h b t w t r r1
I z
cm4
W z
cm3
S z
cm3
i z
cm
I y
cm4
W y
cm3
i y
cm
Ⅰ1010068 4.57.6 6.5 3.314.33 1.2524549.028.2 4.1432.89.6 1.51Ⅰ12.612674 5.08.47.0 3.518.1014.2148877.444.2 5.1946.912.7 1.61Ⅰ1414080 5.59.17.5 3.821.5016.88712101.758.4 5.7564.316.1 1.73Ⅰ1616088 6.09.98.0 4.026.1120.501127140.980.8 6.5793.121.1 1.89Ⅰ1818094 6.510.78.5 4.330.7424.131699185.4106.57.37122.926.2 2.00Ⅰ20a2001007.011.49.0 4.535.5527.912369236.9136.18.16157.931.6 2.11Ⅰ20b2001029.011.49.0 4.539.5531.052505250.2146.17.95169.033.1 2.07Ⅰ22a2201107.512.39.5 4.842.1033.053406309.6177.78.99225.941.1 2.32Ⅰ22b2201129.512.39.5 4.846.5036.503583325.8189.88.78240.242.9 2.27Ⅰ25a2501168.013.010.0 5.048.5138.085017401.4230.710.17280.448.4 2.40Ⅰ25b25011810.013.010.0 5.053.5142.015278422.5246.39.93297.350.4 2.36Ⅰ28a2801228.513.710.5 5.355.3743.477115408.2292.711.35344.156.4 2.49Ⅰ28b28012410.513.710.5 5.360.9747.867481534.4312.311.08363.858.7 2.44Ⅰ32a320130 6.515.011.5 5.867.1252.6911080692.5400.512.85459.070.6 2.62Ⅰ32b32013211.515.011.5 5.873.5257.7111626726.7426.112.58483.873.3 2.57Ⅰ32c32013413.515.011.5 5.879.9262.7412173760.8451.712.34510.176.1 2.53Ⅰ36a36013610.015.812.0 6.076.4460.0015796877.6508.812.38554.981.6 2.69Ⅰ36b36013812.015.812.0 6.083.6465.6616574920.8541.214.08583.684.6 2.64Ⅰ36c36014014.015.812.0 6.090.8471.3117351964.0573.613.82614.087.7 2.60Ⅰ40a40014210.516.512.5 6.386.0767.56217141085.7631.215.88659.992.9 2.77Ⅰ40b40014412.516.512.5 6.394.0773.84227811139.0671.215.56692.896.2 2.71Ⅰ40c40014614.516.512.5 6.3102.0780.12238471192.4711.215.29727.599.7 2.67Ⅰ45a45015011.518.013.5 6.8102.4080.38322411432.9836.417.74855.0114.0 2.89Ⅰ45b45015213.518.013.5 6.8111.4087.45337591500.4887.117.41895.4117.8 2.84Ⅰ45c45015415.518.013.5 6.8120.4094.51352781567.993.717.12938.0121.8 2.79Ⅰ50a50015812.020.014.07.0119.2593.61464721858.91084.119.741121.5142.0 3.07Ⅰ50b50016014.020.014.07.0129.25101.46485561942.21146.619.381171.4146.4 3.01Ⅰ50c50016216.020.014.07.0139.25109.31506392025.61209.119.071223.9151.1 2.96Ⅰ56a56016612.521.014.57.3135.38106.27655762342.01368.822.011365.8164.6 3.18Ⅰ56b56016814.521.014.57.3146.58115.06685032446.51447.221.621423.8169.5 3.12Ⅰ56c56017016.521.014.57.3157.78123.85714302551.11525.621.281484.8174.7 3.07Ⅰ63a63017613.022.015.07.5154.59121.36940042984.31747.424.661702.4193.5 3.32Ⅰ63b63017815.022.015.07.5169.19131.35981713116.61846.624.231770.7199.0 3.25Ⅰ63c63018017.022.015.07.5179.79141.141023393248.91945.923.861942.4204.7 3.20
注：普通工字钢的通常长度：110～118，为5m～19m；120～163，为6m～19m。