C型钢基本尺寸与主要参数GB/T6725-2002 名称 惯性矩cm4 回转半矩 截面模数cm4 H b C t lx ly rx ry wx wy 80 40 15 2.5 41.39 9.326 3.117 1.479 10.35 6.432 100 50 20 2.5 84.93 19.89 3.925 1.899 16.99 10.73 120 50 20 2.5 130.7 21.26 4.633 1.880 21.78 12.44 140 50 20 2.5 188.5 22.42 5.380 1.885 26.93 74.12 140 60 20 2 219.848 25.733 5.345 1.828 31.406 7.532 150 50 20 2 370.766 39.975 5.713 1.874 49.435 23.678 150 60 20 2 351.227 70.223 5.974 2.671 46.830 28.327 160 60 20 2 339.955 41.989 6.182 2.172 42.494 10.109 160 60 20 3 339.955 41.99 6.182 2.172 42.49 22.74 160 70 20 3 376.9 61.27 6.300 2.540 47.11 27.48 180 60 20 2 449.695 43.611 6.881 2.143 49.966 10.235 180 60 20 3 449.6 43.61 6.881 2.143 49.97 25.07 180 70 20 2 449.693 63.712 7.014 2.512 55.188 13.019 180 70 20 3 449.6 63.71 7.014 2.512 55.19 30.25 200 60 20 2 573.425 45.014 7.569 2.112 57.842 10.342 200 60 20 3 578.4 45.04 7.569 2.112 57.84 27.38 200 70 20 2 636.643 65.883 7.715 2.481 63.644 13.167 200 70 20 3 636.6 65.88 7.715 2.481 63.66 32.99 220 70 20 2.5 743.5 68.75 7.755 2.651 66.45 31.98 250 75 20 2 898.495 70.309 9.753 3.156 69.879 25.614 250 75 20 2.5 989.871 72.706 9.189 3.275 71.190 29.846 300 40 15 3 1231 15.36 10.31 1.150 82.11 21.70 300 80 25 3 1125.377 85.605 10.273 3.852 79.560 32.421 380 110 30 4 1301.225 99.818 72.743 4.125 86.765 39.574 400 50 15 3 2837 28.89 13.67 1.378 141.9 36.88 注：特殊规格型钢可在下列尺寸中任意调节H:50-400(mm)B:30-110(mm)T:1.5-5.0(mm)并可生产不等边C型钢