Hot finished Square Hollow Sections

Square hollow sections are often used for columns, however similarly to RHS sections, they are not often used as beams due to its shape that makes it difficult to bolt to other beams and vice versa. SHSs are often called “box sections”. An example is 100 x 100 x 10 SHS, which is 100 mm deep, 100 mm wide and the wall is 10 mm thick. Similarly to RHS sections, hot rolled SHSs are made at the mill as one piece, whereas cold formed SHSs are made of a flat sheet rolled at right angles and welded. It is therefore easy to note the difference, as the cold rolled SHSs have a weld all along its length.

Designation Size
B mm x mm
Thickness
T mm
Normal Corner
Radius External
ro mm
Normal Corner
Radius Internal
ri mm
Mass Per Metre
M kg/m
Area of section
A cm2
Second Moment of
area I cm4
Radius of Gyration
r cm
Elastic Modulus
Z cm3
Plastic Modulus
S cm3
Designation Size
B mm x mm
Thickness
T mm
Normal Corner
Radius External
ro mm
Normal Corner
Radius Internal
ri mm
Mass Per Metre
M kg/m
Area of section
A cm2
Second Moment of
area I cm4
Radius of Gyration
r cm
Elastic Modulus
Z cm3
Plastic Modulus
S cm3
20 2 3 2 1.1 1.4 0.739 0.727 0.739 0.93
20 2.5 3.75 2.5 1.32 1.68 0.835 0.705 0.835 1.08
25 2 3 2 1.41 1.8 1.56 0.932 1.25 1.53
25 2.5 3.75 2.5 1.71 2.18 1.81 0.909 1.44 1.82
25 3 4.5 3 2 2.54 2 0.886 1.6 2.06
30 2 3 2 1.72 2.2 2.84 1.14 1.89 2.29
30 2.5 3.75 2.5 2.11 2.68 3.33 1.11 2.22 2.74
30 3 4.5 3 2.47 3.14 3.74 1.09 2.5 3.14
40 2.5 3.75 2.5 2.89 3.68 8.54 1.52 4.27 5.14
40 3 4.5 3 3.41 4.34 9.78 1.5 4.89 5.97
40 3.2 4.8 3.2 3.61 4.6 10.2 1.49 5.11 6.28
40 3.6 5.4 3.6 4.01 5.1 11.1 1.47 5.54 6.88
40 4 6 4 4.39 5.59 11.8 1.45 5.91 7.44
40 5 7.5 5 5.28 6.73 13.4 1.41 6.68 8.66
50 2.5 3.75 2.5 3.68 4.68 17.5 1.93 6.99 8.29
50 3 4.5 3 4.35 5.54 20.2 1.91 8.08 9.7
50 3.2 4.8 3.2 4.62 5.88 21.2 1.9 8.49 10.2
50 3.6 5.4 3.6 5.14 6.54 23.2 1.88 9.27 11.3
50 4 6 4 5.64 7.19 25 1.86 9.99 12.3
50 5 7.5 5 6.85 8.73 28.9 1.82 11.6 14.5
50 6 9 6 7.99 10.2 32 1.77 12.8 16.5
50 6.3 9.45 6.3 8.31 10.6 32.8 1.76 13.1 17
60 2.5 3.75 2.5 4.46 5.68 31.1 2.34 10.4 12.2
60 3 4.5 3 5.29 6.74 36.2 2.32 12.1 14.3
60 3.2 4.8 3.2 5.62 7.16 38.2 2.31 12.7 15.2
60 3.6 5.4 3.6 6.27 7.98 41.9 2.29 14 16.8
60 4 6 4 6.9 8.79 45.4 2.27 15.1 18.3
60 5 7.5 5 8.42 10.7 53.3 2.23 17.8 21.9
60 6 9 6 9.87 12.6 59.9 2.18 20 25.1
60 6.3 9.45 6.3 10.3 13.1 61.6 2.17 20.5 26
60 8 12 8 12.5 16 69.7 2.09 23.2 30.4
70 3 4.5 3 6.24 7.94 59 2.73 16.9 19.9
70 3.2 4.8 3.2 6.63 8.44 62.3 2.72 17.8 21
70 3.6 5.4 3.6 7.4 9.42 68.6 2.7 19.6 23.3
70 4 6 4 8.15 10.4 74.7 2.68 21.3 25.5
70 5 7.5 5 9.99 12.7 88.5 2.64 25.3 30.8
70 6 9 6 11.8 15 101 2.59 28.7 35.5
70 6.3 9.45 6.3 12.3 15.6 104 2.58 29.7 36.9
70 8 12 8 15 19.2 120 2.5 34.2 43.8
80 3 4.5 3 7.18 9.14 89.8 3.13 22.5 26.3
80 3.2 4.8 3.2 7.63 9.72 95 3.13 23.7 27.9
80 3.6 5.4 3.6 8.53 10.9 105 3.11 26.2 31
80 4 6 4 9.41 12 114 3.09 28.6 34
80 5 7.5 5 11.6 14.7 137 3.05 34.2 41.1
80 6 9 6 13.6 17.4 156 3 39.1 47.8
80 6.3 9.45 6.3 14.2 18.1 162 2.99 40.5 49.7
80 8 12 8 17.5 22.4 189 2.91 47.3 59.5
90 3.6 5.4 3.6 9.66 12.3 152 3.52 33.8 39.7
90 4 6 4 10.7 13.6 166 3.5 37 43.6
90 5 7.5 5 13.1 16.7 200 3.45 44.4 53
90 6 9 6 15.5 19.8 230 3.41 51.1 61.8
90 6.3 9.45 6.3 16.2 20.7 238 3.4 53 64.3
90 8 12 8 20.1 25.6 281 3.32 62.6 77.6
100 3.6 5.4 3.6 10.8 13.7 212 3.92 42.3 49.5
100 4 6 4 11.9 15.2 232 3.91 46.4 54.4
100 5 7.5 5 14.7 18.7 279 3.86 55.9 66.4
100 6 9 6 17.4 22.2 323 3.82 64.6 77.6
100 6.3 9.45 6.3 18.2 23.2 336 3.8 67.1 80.9
100 8 12 8 22.6 28.8 400 3.73 79.9 98.2
100 10 15 10 27.4 34.9 462 3.64 92.4 116
120 4 6 4 14.4 18.4 410 4.72 68.4 79.7
120 5 7.5 5 17.8 22.7 498 4.68 83 97.6
120 6 9 6 21.2 27 579 4.63 96.6 115
120 6.3 9.45 6.3 22.2 28.2 603 4.62 100 120
120 8 12 8 27.6 35.2 726 4.55 121 146
120 10 15 10 33.7 42.9 852 4.46 142 175
120 12 18 12 39.5 50.3 958 4.36 160 201
120 12.5 18.75 12.5 40.9 52.1 982 4.34 164 207
140 5 7.5 5 21 26.7 807 5.5 115 135
140 6 9 6 24.9 31.8 944 5.45 135 159
140 6.3 9.45 6.3 26.1 33.3 984 5.44 141 166
140 8 12 8 32.6 41.6 1195 5.36 171 204
140 10 15 10 40 50.9 1416 5.27 202 246
140 12 18 12 47 59.9 1609 5.18 230 284
140 12.5 18.75 12.5 48.7 62.1 1653 5.16 236 293
150 5 7.5 5 22.6 28.7 1002 5.9 134 156
150 6 9 6 26.8 34.2 1174 5.86 156 184
150 6.3 9.45 6.3 28.1 35.8 1223 5.85 163 192
150 8 12 8 35.1 44.8 1491 5.77 199 237
150 10 15 10 43.1 54.9 1773 5.68 236 286
150 12 18 12 50.8 64.7 2023 5.59 270 331
150 12.5 18.75 12.5 52.7 67.1 2080 5.57 277 342
150 16 24 16 65.2 83 2430 5.41 324 411
160 5 7.5 5 24.1 30.7 1225 6.31 153 178
160 6 9 6 28.7 36.6 1437 6.27 180 210
160 6.3 9.45 6.3 30.1 38.3 1499 6.26 187 220
160 8 12 8 37.6 48 1831 6.18 229 272
160 10 15 10 46.3 58.9 2186 6.09 273 329
160 12 18 12 54.6 69.5 2502 6 313 382
160 12.5 18.75 12.5 56.6 72.1 2576 5.98 322 395
160 16 24 16 70.2 89.4 3028 5.82 379 476
180 5 7.5 5 27.3 34.7 1765 7.13 196 227
180 6 9 6 32.5 41.4 2077 7.09 231 269
180 6.3 9.45 6.3 34 43.3 2168 7.07 241 281
180 8 12 8 42.7 54.4 2661 7 296 349
180 10 15 10 52.5 66.9 3193 6.91 355 424
180 12 18 12 62.1 79.1 3677 6.82 409 494
180 12.5 18.75 12.5 64.4 82.1 3790 6.8 421 511
180 16 24 16 80.2 102 4504 6.64 500 621
200 5 7.5 5 30.4 38.7 2445 7.95 245 283
200 6 9 6 36.2 46.2 2883 7.9 288 335
200 6.3 9.45 6.3 38 48.4 3011 7.89 301 350
200 8 12 8 47.7 60.8 3709 7.81 371 436
200 10 15 10 58.8 74.9 4471 7.72 447 531
200 12 18 12 69.6 88.7 5171 7.64 517 621
200 12.5 18.75 12.5 72.3 92.1 5336 7.61 534 643
200 16 24 16 90.3 115 6394 7.46 639 785
220 6 9 6 40 51 3875 8.72 352 408
220 6.3 9.45 6.3 41.9 53.4 4049 8.71 368 427
220 8 12 8 52.7 67.2 5002 8.63 455 532
220 10 15 10 65.1 82.9 6050 8.54 550 650
220 12 18 12 77.2 98.3 7023 8.45 638 762
220 12.5 18.75 12.5 80.1 102 7254 8.43 659 789
220 16 24 16 100 128 8749 8.27 795 969
250 5 7.5 5 38.3 48.7 4861 9.99 389 447
250 6 9 6 45.7 58.2 5752 9.94 460 531
250 6.3 9.45 6.3 47.9 61 6014 9.93 481 556
250 8 12 8 60.3 76.8 7455 9.86 596 694
250 10 15 10 74.5 94.9 9055 9.77 724 851
250 12 18 12 88.5 113 10556 9.68 844 1000
250 12.5 18.75 12.5 91.9 117 10915 9.66 873 1037
250 16 24 16 115 147 13267 9.5 1061 1280
260 6 9 6 47.6 60.6 6491 10.4 499 576
260 6.3 9.45 6.3 49.9 63.5 6788 10.3 522 603
260 8 12 8 62.8 80 8423 10.3 648 753
260 10 15 10 77.7 98.9 10242 10.2 788 924
260 12 18 12 92.2 117 11954 10.1 920 1087
260 12.5 18.75 12.5 95.8 122 12365 10.1 951 1127
260 16 24 16 120 153 15061 9.91 1159 1394
300 6 9 6 55.1 70.2 10080 12 672 772
300 6.3 9.45 6.3 57.8 73.6 10547 12 703 809
300 8 12 8 72.8 92.8 13128 11.9 875 1013
300 10 15 10 90.2 115 16026 11.8 1068 1246
300 12 18 12 107 137 18777 11.7 1252 1470
300 12.5 18.75 12.5 112 142 19442 11.7 1296 1525
300 16 24 16 141 179 23850 11.5 1590 1895
350 8 12 8 85.4 109 21129 13.9 1207 1392
350 10 15 10 106 135 25884 13.9 1479 1715
350 12 18 12 126 161 30435 13.8 1739 2030
350 12.5 18.75 12.5 131 167 31541 13.7 1802 2107
350 16 24 16 166 211 38942 13.6 2225 2630
400 8 12 8 97.9 125 31857 16 1593 1830
400 10 15 10 122 155 39128 15.9 1956 2260
400 12 18 12 145 185 46130 15.8 2306 2679
400 12.5 18.75 12.5 151 192 47839 15.8 2392 2782
400 16 24 16 191 243 59344 15.6 2967 3484
400 20 30 20 235 300 71535 15.4 3577 4247
Torsional Constants
Inertia J cm4
Torsional Constants
Modulus C cm3
Section Surface Area
As m2/m
Nominal Length
Per Tonne m
Torsional Constants
Inertia J cm4
Torsional Constants
Modulus C cm3
Section Surface Area
As m2/m
Nominal Length
Per Tonne m
1.22 1.07 0.0748 912
1.41 1.2 0.0736 757
2.52 1.81 0.0948 709
2.97 2.08 0.0936 584
3.35 2.3 0.0923 501
4.53 2.75 0.115 580
5.4 3.22 0.114 475
6.16 3.6 0.112 405
13.6 6.22 0.154 346
15.7 7.1 0.152 293
16.5 7.42 0.152 277
18.1 8.01 0.151 250
19.5 8.54 0.15 228
22.5 9.6 0.147 189
27.5 10.2 0.194 272
32.1 11.8 0.192 230
33.8 12.4 0.192 217
37.2 13.5 0.191 195
40.4 14.5 0.19 177
47.6 16.7 0.187 146
53.6 18.4 0.185 125
55.2 18.8 0.184 120
48.5 15.2 0.234 224
56.9 17.7 0.232 189
60.2 18.6 0.232 178
66.5 20.4 0.231 160
72.5 22 0.23 145
86.4 25.7 0.227 119
98.6 28.8 0.225 101
102 29.6 0.224 97.2
118 33.4 0.219 79.9
92.2 24.8 0.272 160
97.6 26.1 0.272 151
108 28.7 0.271 135
118 31.2 0.27 123
142 36.8 0.267 100
163 41.6 0.265 85.1
169 42.9 0.264 81.5
200 49.2 0.259 66.5
140 33 0.312 139
148 34.9 0.312 131
164 38.5 0.311 117
180 41.9 0.31 106
217 49.8 0.307 86.5
252 56.8 0.305 73.3
262 58.7 0.304 70.2
312 68.3 0.299 57
237 49.7 0.351 104
260 54.2 0.35 93.7
316 64.8 0.347 76.1
367 74.3 0.345 64.4
382 77 0.344 61.6
459 90.5 0.339 49.9
328 62.3 0.391 92.7
361 68.2 0.39 83.9
439 81.8 0.387 68
513 94.3 0.385 57.5
534 97.8 0.384 54.9
646 116 0.379 44.3
761 133 0.374 36.5
635 101 0.47 69.3
777 122 0.467 56
911 141 0.465 47.2
950 147 0.464 45.1
1160 176 0.459 36.2
1382 206 0.454 29.7
1578 230 0.449 25.3
1623 236 0.448 24.5
1253 170 0.547 47.7
1475 198 0.545 40.1
1540 206 0.544 38.3
1892 249 0.539 30.7
2272 294 0.534 25
2616 333 0.529 21.3
2696 342 0.528 20.5
1550 197 0.587 44.3
1828 230 0.585 37.3
1909 240 0.584 35.6
2351 291 0.579 28.5
2832 344 0.574 23.2
3272 391 0.569 19.7
3375 402 0.568 19
4026 467 0.559 15.3
1892 226 0.627 41.5
2233 264 0.625 34.8
2333 275 0.624 33.3
2880 335 0.619 26.6
3478 398 0.614 21.6
4028 454 0.609 18.3
4158 467 0.608 17.7
4988 546 0.599 14.2
2718 290 0.707 36.7
3215 340 0.705 30.8
3361 355 0.704 29.4
4162 434 0.699 23.4
5048 518 0.694 19
5873 595 0.689 16.1
6070 613 0.688 15.5
7343 724 0.679 12.5
3756 362 0.787 32.9
4449 426 0.785 27.6
4653 444 0.784 26.3
5778 545 0.779 21
7031 655 0.774 17
8208 754 0.769 14.4
8491 778 0.768 13.8
10340 927 0.759 11.1
5963 521 0.865 25
6240 544 0.864 23.8
7765 669 0.859 19
9473 807 0.854 15.4
11091 933 0.849 13
11481 963 0.848 12.5
14054 1156 0.839 9.97
7430 577 0.987 26.1
8825 681 0.985 21.9
9238 712 0.984 20.9
11525 880 0.979 16.6
14106 1065 0.974 13.4
16567 1237 0.969 11.3
17164 1279 0.968 10.9
21138 1546 0.959 8.67
9951 740 1.02 21
10417 773 1.02 20.1
13006 956 1.02 15.9
15932 1159 1.01 12.9
18729 1348 1.01 10.8
19409 1394 1.01 10.4
23942 1689 0.999 8.3
15407 997 1.18 18.2
16136 1043 1.18 17.3
20194 1294 1.18 13.7
24807 1575 1.17 11.1
29249 1840 1.17 9.32
30333 1904 1.17 8.97
37622 2325 1.16 7.12
32384 1789 1.38 11.7
39886 2185 1.37 9.44
47154 2563 1.37 7.93
48934 2654 1.37 7.62
60990 3264 1.36 6.04
48695 2363 1.58 10.2
60092 2895 1.57 8.22
71181 3405 1.57 6.9
73906 3530 1.57 6.63
92442 4362 1.56 5.24
112489 5237 1.55 4.25
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