Properties - Hot Finished Square Hollow Sections

Welcome to our Hot Finished Square Hollow Section properties page! Here you'll find properties for all UK Hot Finished Square Hollow Section steel sections described by the Steelwork Design Guide to BS5950-1:2000, Volume 1, Section Properties, Member Capacities, 7th Edition (also known as The Blue Book). Sort the table below according to any property and select a CAD file to download using the reference links in the left-most column.

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Section Reference Ratio for Local Buckling Second Moment of Area Radius of Gyration Elastic Modulus Plastic Modulus Torsional Constants Surface Area
                Per Metre Per Tonne
  d/t(1) I
cm4
r
cm
Z
cm3
S
cm3
J
cm4
C
cm3
m2 m2
40x40x3.0 10.3 9.78 1.5 4.89 5.97 15.7 7.1 0.152 44.7
40x40x3.2 9.5 10.2 1.49 5.11 6.28 16.5 7.42 0.152 42
40x40x4.0 7 11.8 1.45 5.91 7.44 19.5 8.54 0.15 34.1
40x40x5.0 5 13.4 1.41 6.68 8.66 22.5 9.6 0.147 27.8
50x50x3.0 13.7 20.2 1.91 8.08 9.7 32.1 11.8 0.192 44.2
50x50x3.2 12.6 21.2 1.9 8.49 10.2 33.8 12.4 0.192 41.5
50x50x4.0 9.5 25 1.86 9.99 12.3 40.4 14.5 0.19 33.6
50x50x5.0 7 28.9 1.82 11.6 14.5 47.6 16.7 0.187 27.3
50x50x6.3 4.94 32.8 1.76 13.1 17 55.2 18.8 0.184 22.1
60x60x3.0 17 36.2 2.32 12.1 14.3 56.9 17.7 0.232 43.9
60x60x3.2 15.8 38.2 2.31 12.7 15.2 60.2 18.6 0.232 41.2
60x60x4.0 12 45.4 2.27 15.1 18.3 72.5 22 0.23 33.3
60x60x5.0 9 53.3 2.23 17.8 21.9 86.4 25.7 0.227 27
60x60x6.3 6.52 61.6 2.17 20.5 26 102 29.6 0.224 21.7
60x60x8.0 4.5 69.7 2.09 23.2 30.4 118 33.4 0.219 17.5
70x70x3.6 16.4 68.6 2.7 19.6 23.3 108 28.7 0.271 36.6
70x70x5.0 11 88.5 2.64 25.3 30.8 142 36.8 0.267 26.7
70x70x6.3 8.11 104 2.58 29.7 36.9 169 42.9 0.264 21.5
70x70x8.0 5.75 120 2.5 34.2 43.8 200 49.2 0.259 17.3
80x80x3.6 19.2 105 3.11 26.2 31 164 38.5 0.311 36.4
80x80x4.0 17 114 3.09 28.6 34 180 41.9 0.31 32.9
80x80x5.0 13 137 3.05 34.2 41.1 217 49.8 0.307 26.6
80x80x6.3 9.7 162 2.99 40.5 49.7 262 58.7 0.304 21.3
80x80x8.0 7 189 2.91 47.3 59.5 312 68.3 0.299 17.1
90x90x3.6 22 152 3.52 33.8 39.7 237 49.7 0.351 36.3
90x90x4.0 19.5 166 3.5 37 43.6 260 54.2 0.35 32.8
90x90x5.0 15 200 3.45 44.4 53 316 64.8 0.347 26.4
90x90x6.3 11.3 238 3.4 53 64.3 382 77 0.344 21.2
90x90x8.0 8.25 281 3.32 62.6 77.6 459 90.5 0.339 16.9
100x100x4.0 22 232 3.91 46.4 54.4 361 68.2 0.39 32.7
100x100x5.0 17 279 3.86 55.9 66.4 439 81.8 0.387 26.3
100x100x6.3 12.9 336 3.8 67.1 80.9 534 97.8 0.384 21.1
100x100x8.0 9.5 400 3.73 79.9 98.2 646 116 0.379 16.8
100x100x10.0 7 462 3.64 92.4 116 761 133 0.374 13.6
120x120x5.0 21 498 4.68 83 97.6 777 122 0.467 26.2
120x120x6.3 16 603 4.62 100 120 950 147 0.464 20.9
120x120x8.0 12 726 4.55 121 146 1160 176 0.459 16.6
120x120x10.0 9 852 4.46 142 175 1380 206 0.454 13.5
120x120x12.5 6.6 982 4.34 164 207 1620 236 0.448 11
140x140x5.0 25 807 5.5 115 135 1250 170 0.547 26.1
140x140x6.3 19.2 984 5.44 141 166 1540 206 0.544 20.8
140x140x8.0 14.5 1200 5.36 171 204 1890 249 0.539 16.5
140x140x10.0 11 1420 5.27 202 246 2270 294 0.534 13.4
140x140x12.5 8.2 1650 5.16 236 293 2700 342 0.528 10.8
150x150x5.0 27 1000 5.9 134 156 1550 197 0.587 26
150x150x6.3 20.8 1220 5.85 163 192 1910 240 0.584 20.8
150x150x8.0 15.8 1490 5.77 199 237 2350 291 0.579 16.5
150x150x10.0 12 1770 5.68 236 286 2830 344 0.574 13.3
150x150x12.5 9 2080 5.57 277 342 3380 402 0.568 10.8
160x160x5.0 29 1230 6.31 153 178 1890 226 0.627 26
160x160x6.3 22.4 1500 6.26 187 220 2330 275 0.624 20.7
160x160x8.0 17 1830 6.18 229 272 2880 335 0.619 16.5
160x160x10.0 13 2190 6.09 273 329 3480 398 0.614 13.3
160x160x12.5 9.8 2580 5.98 322 395 4160 467 0.608 10.7
160x160x14.2 8.27 2810 5.9 351 436 4580 508 0.603 9.53
180x180x6.3 25.6 2170 7.07 241 281 3360 355 0.704 20.7
180x180x8.0 19.5 2660 7 296 349 4160 434 0.699 16.4
180x180x10.0 15 3190 6.91 355 424 5050 518 0.694 13.2
180x180x12.5 11.4 3790 6.8 421 511 6070 613 0.688 10.7
180x180x14.2 9.68 4150 6.72 462 566 6710 670 0.683 9.46
180x180x16.0 8.25 4500 6.64 500 621 7340 724 0.679 8.46
200x200x5.0 37 2450 7.95 245 283 3760 362 0.787 25.9
200x200x6.3 28.7 3010 7.89 301 350 4650 444 0.784 20.6
200x200x8.0 22 3710 7.81 371 436 5780 545 0.779 16.3
200x200x10.0 17 4470 7.72 447 531 7030 655 0.774 13.2
200x200x12.5 13 5340 7.61 534 643 8490 778 0.768 10.6
200x200x14.2 11.1 5870 7.54 587 714 9420 854 0.763 9.41
200x200x16.0 9.5 6390 7.46 639 785 10300 927 0.759 8.4
250x250x6.3 36.7 6010 9.93 481 556 9240 712 0.984 20.5
250x250x8.0 28.3 7460 9.86 596 694 11500 880 0.979 16.3
250x250x10.0 22 9060 9.77 724 851 14100 1070 0.974 13.1
250x250x12.5 17 10900 9.66 873 1040 17200 1280 0.968 10.5
250x250x14.2 14.6 12100 9.58 967 1160 19100 1410 0.963 9.31
250x250x16.0 12.6 13300 9.5 1060 1280 21100 1550 0.959 8.31
260x260x6.3 38.3 6790 10.3 522 603 10400 773 1.02 20.5
260x260x8.0 29.5 8420 10.3 648 753 13000 956 1.02 16.2
260x260x10.0 23 10200 10.2 788 924 15900 1160 1.01 13.1
260x260x12.5 17.8 12400 10.1 951 1130 19400 1390 1.01 10.5
260x260x14.2 15.3 13700 9.99 1060 1260 21700 1540 1 9.3
260x260x16.0 13.3 15100 9.91 1160 1390 23900 1690 0.999 8.29
300x300x6.3 44.6 10500 12 703 809 16100 1040 1.18 20.5
300x300x8.0 34.5 13100 11.9 875 1010 20200 1290 1.18 16.2
300x300x10.0 27 16000 11.8 1070 1250 24800 1580 1.17 13
300x300x12.5 21 19400 11.7 1300 1530 30300 1900 1.17 10.5
300x300x14.2 18.1 21600 11.6 1440 1710 33900 2110 1.16 9.25
300x300x16.0 15.8 23900 11.5 1590 1900 37600 2330 1.16 8.25
350x350x8.0 40.8 21100 13.9 1210 1390 32400 1790 1.38 16.2
350x350x10.0 32 25900 13.9 1480 1720 39900 2190 1.37 13
350x350x12.5 25 31500 13.7 1800 2110 48900 2650 1.37 10.4
350x350x14.2 21.6 35200 13.7 2010 2360 54900 2960 1.36 9.21
350x350x16.0 18.9 38900 13.6 2230 2630 61000 3260 1.36 8.2
400x400x10.0 37 39100 15.9 1960 2260 60100 2900 1.57 12.9
400x400x12.5 29 47800 15.8 2390 2780 73900 3530 1.57 10.4
400x400x14.2 25.2 53500 15.7 2680 3130 83000 3940 1.56 9.18
400x400x16.0 22 59300 15.6 2970 3480 92400 4360 1.56 8.17
400x400x20.0 17 71500 15.4 3580 4250 112000 5240 1.55 6.58