# Simple Square Bar Sections

### Simple Square Bar Sections

Table of Dimensions + Properties

The table includes various useful properties of steel square bar.    The properties are based on the following

Density of mild steel = 7830 kg/m3
2nd moment of Area ( Ixx = Iyy ) for a square section =B4 /12 (Used for bending equations )
Polar moment of Area ( Izz ) for a square section = B4 /6 (used for torsion equations )

Note: The mass properties provided can easily be converted to another material by mulipling the mass/mm by the ratio of the density of the chosen material to that of steel.

m copper = msteel . [ Densitycopper / Density steel ]

Example 50mm square
CSA = 2500mm2
Weight/mm = 0,01958 kg
2nd M of Area (Ixx = Iyy )= 0,5208 x 106 mm4
Polar M of Area(Izz ) =1.01467 x 106 mm4

 Width/Depth Cross Section Area Mass/mm Second Moment of Area of section Polar Moment of Area Bending Calcs. Torsion Calcs B A m Ixx = Iyy J = Izz mm mm2 kg/mm mm4 x 106 mm4 x 106 5 25.00 0.00020 0.000052 0.00010417 10 100.00 0.00078 0.000833 0.00166667 15 225.00 0.00176 0.004219 0.00843750 20 400.00 0.00313 0.013333 0.02667 25 625.00 0.00489 0.032552 0.06510 30 900.00 0.00705 0.0675 0.13500 35 1225.00 0.00959 0.1251 0.25010 40 1600.00 0.01253 0.2133 0.42667 45 2025.00 0.01586 0.3417 0.68344 50 2500.00 0.01958 0.5208 1.04167 55 3025.00 0.02369 0.7626 1.52510 60 3600.00 0.02819 1.0800 2.16000 65 4225.00 0.03308 1.4876 2.97510 70 4900.00 0.03837 2.0008 4.00167 75 5625.00 0.04404 2.64 5.27344 80 6400.00 0.05011 3.41 6.82667 85 7225.00 0.05657 4.35 8.70010 90 8100.00 0.06342 5.47 10.93500 95 9025.00 0.07067 6.79 13.57510 100 10000.00 0.07830 8.33 16.66667 105 11025.00 0.08633 10.13 20.25844 110 12100.00 0.09474 12.20 24.40167 115 13225.00 0.10355 14.58 29.15010 120 14400.00 0.11275 17.28 34.56000 125 15625.00 0.12234 20.35 40.69010 130 16900.00 0.13233 23.80 47.60167 135 18225.00 0.14270 27.68 55.35844 Width/Depth Cross Section Area Mass/mm Second Moment of Area of section Polar Moment of Area Bending Calcs. Torsion Calcs B A m Ixx = Iyy J = Izz mm mm2 kg/mm mm4 x 106 mm4 x 106 140 19600.00 0.15347 32.01 64.02667 145 21025.00 0.16463 36.84 73.67510 150 22500.00 0.17618 42.19 84.37500 155 24025.00 0.18812 48.10 96.20010 160 25600.00 0.20045 54.61 109.22667 165 27225.00 0.21317 61.77 123.53344 170 28900.00 0.22629 69.60 139.20167 175 30625.00 0.23979 78.16 156.31510 180 32400.00 0.25369 87.48 174.96000 185 34225.00 0.26798 97.61 195.22510 190 36100.00 0.28266 108.60 217.20167 195 38025.00 0.29774 120.49 240.98344 200 40000.00 0.31320 133.33 266.66667 205 42025.00 0.32906 147.18 294.35010 210 44100.00 0.34530 162.07 324.13500 215 46225.00 0.36194 178.06 356.12510 220 48400.00 0.37897 195.21 390.42667 225 50625.00 0.39639 213.57 427.14844 230 52900.00 0.41421 233.20 466.40167 235 55225.00 0.43241 254.15 508.30010 240 57600.00 0.45101 276.48 552.96000 245 60025.00 0.47000 300.25 600.50010 250 62500.00 0.48938 325.52 651.04167 255 65025.00 0.50915 352.35 704.70844 260 67600.00 0.52931 380.81 761.62667 265 70225.00 0.54986 410.96 821.92510 Width/Depth Cross Section Area Mass/mm Second Moment of Area of section Polar Moment of Area Bending Calcs. Torsion Calcs B A m Ixx = Iyy J = Izz mm mm2 kg/mm mm4 x 106 mm4 x 106 270 72900.00 0.57081 442.87 885.73500 275 75625.00 0.59214 476.60 953.19010 280 78400.00 0.61387 512.21 1024.42667 285 81225.00 0.63599 549.79 1099.58344 290 84100.00 0.65850 589.40 1178.80167 295 87025.00 0.68141 631.11 1262.22510 300 90000.00 0.70470 675.00 1350.00000 310 96100.00 0.75246 769.60 1539.20167 320 102400.00 0.80179 873.81 1747.62667 330 108900.00 0.85269 988.27 1976.53500 340 115600.00 0.90515 1113.61 2227.22667 350 122500.00 0.95918 1250.52 2501.04167 360 129600.00 1.01477 1399.68 2799.36000 370 136900.00 1.07193 1561.80 3123.60167 380 144400.00 1.13065 1737.61 3475.22667 390 152100.00 1.19094 1927.87 3855.73500 400 160000.00 1.25280 2133.33 4266.66667 410 168100.00 1.31622 2354.80 4709.60167 420 176400.00 1.38121 2593.08 5186.16000 430 184900.00 1.44777 2849.00 5698.00167 440 193600.00 1.51589 3123.41 6246.82667 450 202500.00 1.58558 3417.19 6834.37500 460 211600.00 1.65683 3731.21 7462.42667 470 220900.00 1.72965 4066.40 8132.80167 480 230400.00 1.80403 4423.68 8847.36000 490 240100.00 1.87998 4804.00 9608.00167 500 250000.00 1.95750 5208.33 10416.66667 510 260100.00 2.03658 5637.67 11275.33500 520 270400.00 2.11723 6093.01 12186.02667 530 280900.00 2.19945 6575.40 13150.80167 540 291600.00 2.28323 7085.88 14171.76000 550 302500.00 2.36858 7625.52 15251.04167 Width/Depth Cross Section Area Mass/mm Second Moment of Area of section Polar Moment of Area Bending Calcs. Torsion Calcs B A m Ixx = Iyy J = Izz mm mm2 kg/mm mm4 x 106 mm4 x 106 560 313600.00 2.45549 8195.41 16390.82667 570 324900.00 2.54397 8796.67 17593.33500 580 336400.00 2.63401 9430.41 18860.82667 590 348100.00 2.72562 10097.80 20195.60167 600 360000.00 2.81880 10800.00 21600.00000 620 384400.00 3.00985 12313.61 24627.22667 640 409600.00 3.20717 13981.01 27962.02667 660 435600.00 3.41075 15812.28 31624.56000 680 462400.00 3.62059 17817.81 35635.62667 700 490000.00 3.83670 20008.33 40016.66667 720 518400.00 4.05907 22394.88 44789.76000 740 547600.00 4.28771 24988.81 49977.62667 760 577600.00 4.52261 27801.81 55603.62667 780 608400.00 4.76377 30845.88 61691.76000 800 640000.00 5.01120 34133.33 68266.66667 820 672400.00 5.26489 37676.81 75353.62667 840 705600.00 5.52485 41489.28 82978.56000 860 739600.00 5.79107 45584.01 91168.02667 880 774400.00 6.06355 49974.61 99949.22667 900 810000.00 6.34230 54675.00 109350.00000 920 846400.00 6.62731 59699.41 119398.82667 940 883600.00 6.91859 65062.41 130124.82667 960 921600.00 7.21613 70778.88 141557.76000 980 960400.00 7.51993 76864.01 153728.02667 1000 1000000.00 7.83000 83333.33 166666.66667 Width/Depth Cross Section Area Mass/mm Second Moment of Area of section Polar Moment of Area Bending Calcs. Torsion Calcs B A m Ixx = Iyy J = Izz mm mm2 kg/mm mm4 x 106 mm4 x 106