表4-23不锈钢热轧等边角钢的尺寸规格标准截面尺寸/mm理论质量/(kg/m)参考数值A×Btr1r2截面面积/cm21Cr18Ni9OCr19Ni900Cr19Ni11OCr18Ni11Ti0Cr17Ni12M0200Cr17Ni14M02Ocr18Ni1Nb1Cr17重心位置/cm截面惯性矩/cm4截面惯性半径/cm截面模数/cm3CXCyIxIy最大Iu最小Ivixiy最大iu最小ivZxZy20×203421.1270.894O.899O.8680.60.6O.390.39O.61O.16O.590.590.74O.38O.280.2825×253421.4271.131.141.1O.72O.72O.80O.801.26O.33O.75O.750.94O.48O.45O.4525×254431.8361.461.471.41O.790.79O.98O.981.55O.42O.73O.730.920.48O.57O.5730×303421.7271.371.381.33O.84O.841.421.422.26O.59O.910.911.14O.58O.660.6630×304432.2361.771.781.72O.88O.881.771.772.81O.74O.89O.891.12O.57O.84O.8430×305432.7462.182.192.11O.92O.922.142.143.37O.91O.88O.881.11O.571.031.0330×306443.2062.542.562.470.940.942.412.413.791.040.870.871.09O.571.171.1740×4034.522.3361.851.861.81.091.093.533.535.61.461.231.231.55O.791.211.2140×4044.533.0452.452.462.381.121.124.464.467.091.841.211.211.53O.781.551.5540×4054.533.7552.9832.891.171.175425.428.592.251.21.21.51O.771.911.9140×4064.544.4153.613.633.511.21.26.196.199.792.581.181.181.49O.762.212.2150×5046.533.8923.093.1131.371.379.069.0614.43.761.531.531.92O.982.492.4950×5056.534.8023.813.833.71.411.4111.111.117.54.581.521.521.91O.983.083.0850×5066.54.55.6444.484.54.351.441.4412.612.6205.21.51.51.88O.963.553.5560x6056.535.8024.64.634.471.661.6619.619.631.28.081.841.842.321.184.524.5260×6066.546.8625.445.485.281.691.6922.822.836.19.41.821.822.291.175.295.2965×6558.536.3675.055.084.91.771.7725.325.340.110.51.991.992.511.285.355.3565×6568.547.5275.976.015.81_811.8129.429.446.912.21.981.982.491.276.266.2665×6578.558.6586.876.916.671.841.8432.832.851.613.71.951.952.451.267.047.0465×6588.569.7617.747.797.521.881.8836.836.858.315.31.941.942.4.41.257.967.9670×7068.548.1276.446.496.261.931.9337.137.158.915.32.142.142.691.377.337.3370×7078.559.3587.427.477.211.971.9741.541.565.717.32.112.112.651.368.258.2570×7088.561O.568.378.438.132.012.0146.646.67419.32.12.12.651.359.349.3475×7568.548.7276.926.966.722.062.0646.146.173.2192.32.32.91.488.478.4775×7578.551O.067.988.037.752.092.0951.75