Square Hollow Sections (SHS) to BS EN 10210 are hot formed structural steel sections with equal width and height. They are widely used in construction and engineering due to their high strength-to-weight ratio, torsional resistance, and uniform structural properties. Key parameters include section size, wall thickness, mass per metre, second moment of area, and section modulus.
Square Hollow Sections (SHS) manufactured to BS EN 10210-2:1997 are hot formed structural steel sections commonly used in construction, mechanical engineering, and fabrication. These sections offer excellent strength, torsional rigidity, and efficient load distribution, making them suitable for columns, frames, and structural supports. This page provides a comprehensive table of SHS sizes, wall thicknesses, and key mechanical properties including mass per metre, second moment of area, radius of gyration, and section modulus for design and calculation purposes.
The second moment of area (I) indicates resistance to bending, while the section modulus (Z) relates to bending strength. The radius of gyration (r) is used in buckling calculations, and torsional constants (J and C) define resistance to twisting. These properties are essential for structural and mechanical design.
| Size | Thick's | Corner Radii | Mass/m | Area of Section | Second Moment of Area | Radius of Gyration | Section Modulus | Plastic Modulus | Torsional Constants | Section Surface Area | ||
| Ext'l | Int'l | Inertia | Modulus | |||||||||
| B | T | ro | ri | M/m | A | I | r | Z | S | J | C | As |
| mm x mm | mm | mm | mm | kg/m | cm2 | cm4 | cm | cm3 | cm3 | cm4 | cm3 | m2/m |
| 20 | 2 | 3 | 2 | 1.1 | 1.4 | 0.739 | 0.727 | 0.739 | 0.93 | 1.22 | 1.07 | 0.0748 |
| 20 | 2.5 | 3.75 | 2.5 | 1.32 | 1.68 | 0.835 | 0.705 | 0.835 | 1.08 | 1.41 | 1.2 | 0.0736 |
| 25 | 2 | 3 | 2 | 1.41 | 1.8 | 1.56 | 0.932 | 1.25 | 1.53 | 2.52 | 1.81 | 0.0948 |
| 25 | 2.5 | 3.75 | 2.5 | 1.71 | 2.18 | 1.81 | 0.909 | 1.44 | 1.82 | 2.97 | 2.08 | 0.0936 |
| 25 | 3 | 4.5 | 3 | 2 | 2.54 | 2 | 0.886 | 1.6 | 2.06 | 3.35 | 2.3 | 0.0923 |
| 30 | 2 | 3 | 2 | 1.72 | 2.2 | 2.84 | 1.14 | 1.89 | 2.29 | 4.53 | 2.75 | 0.115 |
| 30 | 2.5 | 3.75 | 2.5 | 2.11 | 2.68 | 3.33 | 1.11 | 2.22 | 2.74 | 5.4 | 3.22 | 0.114 |
| 30 | 3 | 4.5 | 3 | 2.47 | 3.14 | 3.74 | 1.09 | 2.5 | 3.14 | 6.16 | 3.6 | 0.112 |
| 40 | 2.5 | 3.75 | 2.5 | 2.89 | 3.68 | 8.54 | 1.52 | 4.27 | 5.14 | 13.6 | 6.22 | 0.154 |
| 40 | 3 | 4.5 | 3 | 3.41 | 4.34 | 9.78 | 1.5 | 4.89 | 5.97 | 15.7 | 7.1 | 0.152 |
| 40 | 3.2 | 4.8 | 3.2 | 3.61 | 4.6 | 10.2 | 1.49 | 5.11 | 6.28 | 16.5 | 7.42 | 0.152 |
| 40 | 3.6 | 5.4 | 3.6 | 4.01 | 5.1 | 11.1 | 1.47 | 5.54 | 6.88 | 18.1 | 8.01 | 0.151 |
| 40 | 4 | 6 | 4 | 4.39 | 5.59 | 11.8 | 1.45 | 5.91 | 7.44 | 19.5 | 8.54 | 0.15 |
| 40 | 5 | 7.5 | 5 | 5.28 | 6.73 | 13.4 | 1.41 | 6.68 | 8.66 | 22.5 | 9.6 | 0.147 |
| 50 | 2.5 | 3.75 | 2.5 | 3.68 | 4.68 | 17.5 | 1.93 | 6.99 | 8.29 | 27.5 | 10.2 | 0.194 |
| 50 | 3 | 4.5 | 3 | 4.35 | 5.54 | 20.2 | 1.91 | 8.08 | 9.7 | 32.1 | 11.8 | 0.192 |
| 50 | 3.2 | 4.8 | 3.2 | 4.62 | 5.88 | 21.2 | 1.9 | 8.49 | 10.2 | 33.8 | 12.4 | 0.192 |
| 50 | 3.6 | 5.4 | 3.6 | 5.14 | 6.54 | 23.2 | 1.88 | 9.27 | 11.3 | 37.2 | 13.5 | 0.191 |
| 50 | 4 | 6 | 4 | 5.64 | 7.19 | 25 | 1.86 | 9.99 | 12.3 | 40.4 | 14.5 | 0.19 |
| 50 | 5 | 7.5 | 5 | 6.85 | 8.73 | 28.9 | 1.82 | 11.6 | 14.5 | 47.6 | 16.7 | 0.187 |
| 50 | 6 | 9 | 6 | 7.99 | 10.2 | 32 | 1.77 | 12.8 | 16.5 | 53.6 | 18.4 | 0.185 |
| 50 | 6.3 | 9.45 | 6.3 | 8.31 | 10.6 | 32.8 | 1.76 | 13.1 | 17 | 55.2 | 18.8 | 0.184 |
| 60 | 2.5 | 3.75 | 2.5 | 4.46 | 5.68 | 31.1 | 2.34 | 10.4 | 12.2 | 48.5 | 15.2 | 0.234 |
| 60 | 3 | 4.5 | 3 | 5.29 | 6.74 | 36.2 | 2.32 | 12.1 | 14.3 | 56.9 | 17.7 | 0.232 |
| 60 | 3.2 | 4.8 | 3.2 | 5.62 | 7.16 | 38.2 | 2.31 | 12.7 | 15.2 | 60.2 | 18.6 | 0.232 |
| 60 | 3.6 | 5.4 | 3.6 | 6.27 | 7.98 | 41.9 | 2.29 | 14 | 16.8 | 66.5 | 20.4 | 0.231 |
| 60 | 4 | 6 | 4 | 6.9 | 8.79 | 45.4 | 2.27 | 15.1 | 18.3 | 72.5 | 22 | 0.23 |
| 60 | 5 | 7.5 | 5 | 8.42 | 10.7 | 53.3 | 2.23 | 17.8 | 21.9 | 86.4 | 25.7 | 0.227 |
| 60 | 6 | 9 | 6 | 9.87 | 12.6 | 59.9 | 2.18 | 20 | 25.1 | 98.6 | 28.8 | 0.225 |
| 60 | 6.3 | 9.45 | 6.3 | 10.3 | 13.1 | 61.6 | 2.17 | 20.5 | 26 | 102 | 29.6 | 0.224 |
| 60 | 8 | 12 | 8 | 12.5 | 16 | 69.7 | 2.09 | 23.2 | 30.4 | 118 | 33.4 | 0.219 |
| 70 | 3 | 4.5 | 3 | 6.24 | 7.94 | 59 | 2.73 | 16.9 | 19.9 | 92.2 | 24.8 | 0.272 |
| 70 | 3.2 | 4.8 | 3.2 | 6.63 | 8.44 | 62.3 | 2.72 | 17.8 | 21 | 97.6 | 26.1 | 0.272 |
| 70 | 3.6 | 5.4 | 3.6 | 7.4 | 9.42 | 68.6 | 2.7 | 19.6 | 23.3 | 108 | 28.7 | 0.271 |
| 70 | 4 | 6 | 4 | 8.15 | 10.4 | 74.7 | 2.68 | 21.3 | 25.5 | 118 | 31.2 | 0.27 |
| 70 | 5 | 7.5 | 5 | 9.99 | 12.7 | 88.5 | 2.64 | 25.3 | 30.8 | 142 | 36.8 | 0.267 |
| 70 | 6 | 9 | 6 | 11.8 | 15 | 101 | 2.59 | 28.7 | 35.5 | 163 | 41.6 | 0.265 |
| 70 | 6.3 | 9.45 | 6.3 | 12.3 | 15.6 | 104 | 2.58 | 29.7 | 36.9 | 169 | 42.9 | 0.264 |
| 70 | 8 | 12 | 8 | 15 | 19.2 | 120 | 2.5 | 34.2 | 43.8 | 200 | 49.2 | 0.259 |
| Size | Thick's | Corner Radii | Mass/m | Area of Section | Second Moment of Area | Radius of Gyration | Section Modulus | Plastic Modulus | Torsional Constants | Section Surface Area | ||
| Ext'l | Int'l | Inertia | Modulus | |||||||||
| B | T | ro | ri | M/m | A | I | r | Z | S | J | C | As |
| mm x mm | mm | mm | mm | kg/m | cm2 | cm4 | cm | cm3 | cm3 | cm4 | cm3 | m2/m | 80 | 3 | 4.5 | 3 | 7.18 | 9.14 | 89.8 | 3.13 | 22.5 | 26.3 | 140 | 33 | 0.312 |
| 80 | 3.2 | 4.8 | 3.2 | 7.63 | 9.72 | 95 | 3.13 | 23.7 | 27.9 | 148 | 34.9 | 0.312 |
| 80 | 3.6 | 5.4 | 3.6 | 8.53 | 10.9 | 105 | 3.11 | 26.2 | 31 | 164 | 38.5 | 0.311 |
| 80 | 4 | 6 | 4 | 9.41 | 12 | 114 | 3.09 | 28.6 | 34 | 180 | 41.9 | 0.31 |
| 80 | 5 | 7.5 | 5 | 11.6 | 14.7 | 137 | 3.05 | 34.2 | 41.1 | 217 | 49.8 | 0.307 |
| 80 | 6 | 9 | 6 | 13.6 | 17.4 | 156 | 3 | 39.1 | 47.8 | 252 | 56.8 | 0.305 |
| 80 | 6.3 | 9.45 | 6.3 | 14.2 | 18.1 | 162 | 2.99 | 40.5 | 49.7 | 262 | 58.7 | 0.304 |
| 80 | 8 | 12 | 8 | 17.5 | 22.4 | 189 | 2.91 | 47.3 | 59.5 | 312 | 68.3 | 0.299 |
| 90 | 3.6 | 5.4 | 3.6 | 9.66 | 12.3 | 152 | 3.52 | 33.8 | 39.7 | 237 | 49.7 | 0.351 |
| 90 | 4 | 6 | 4 | 10.7 | 13.6 | 166 | 3.5 | 37 | 43.6 | 260 | 54.2 | 0.35 |
| 90 | 5 | 7.5 | 5 | 13.1 | 16.7 | 200 | 3.45 | 44.4 | 53 | 316 | 64.8 | 0.347 |
| 90 | 6 | 9 | 6 | 15.5 | 19.8 | 230 | 3.41 | 51.1 | 61.8 | 367 | 74.3 | 0.345 |
| 90 | 6.3 | 9.45 | 6.3 | 16.2 | 20.7 | 238 | 3.4 | 53 | 64.3 | 382 | 77 | 0.344 |
| 90 | 8 | 12 | 8 | 20.1 | 25.6 | 281 | 3.32 | 62.6 | 77.6 | 459 | 90.5 | 0.339 |
| 100 | 3.6 | 5.4 | 3.6 | 10.8 | 13.7 | 212 | 3.92 | 42.3 | 49.5 | 328 | 62.3 | 0.391 |
| 100 | 4 | 6 | 4 | 11.9 | 15.2 | 232 | 3.91 | 46.4 | 54.4 | 361 | 68.2 | 0.39 |
| 100 | 5 | 7.5 | 5 | 14.7 | 18.7 | 279 | 3.86 | 55.9 | 66.4 | 439 | 81.8 | 0.387 |
| 100 | 6 | 9 | 6 | 17.4 | 22.2 | 323 | 3.82 | 64.6 | 77.6 | 513 | 94.3 | 0.385 |
| 100 | 6.3 | 9.45 | 6.3 | 18.2 | 23.2 | 336 | 3.8 | 67.1 | 80.9 | 534 | 97.8 | 0.384 |
| 100 | 8 | 12 | 8 | 22.6 | 28.8 | 400 | 3.73 | 79.9 | 98.2 | 646 | 116 | 0.379 |
| 100 | 10 | 15 | 10 | 27.4 | 34.9 | 462 | 3.64 | 92.4 | 116 | 761 | 133 | 0.374 |
| 120 | 4 | 6 | 4 | 14.4 | 18.4 | 410 | 4.72 | 68.4 | 79.7 | 635 | 101 | 0.47 |
| 120 | 5 | 7.5 | 5 | 17.8 | 22.7 | 498 | 4.68 | 83 | 97.6 | 777 | 122 | 0.467 |
| 120 | 6 | 9 | 6 | 21.2 | 27 | 579 | 4.63 | 96.6 | 115 | 911 | 141 | 0.465 |
| 120 | 6.3 | 9.45 | 6.3 | 22.2 | 28.2 | 603 | 4.62 | 100 | 120 | 950 | 147 | 0.464 |
| 120 | 8 | 12 | 8 | 27.6 | 35.2 | 726 | 4.55 | 121 | 146 | 1160 | 176 | 0.459 |
| 120 | 10 | 15 | 10 | 33.7 | 42.9 | 852 | 4.46 | 142 | 175 | 1382 | 206 | 0.454 |
| 120 | 12 | 18 | 12 | 39.5 | 50.3 | 958 | 4.36 | 160 | 201 | 1578 | 230 | 0.449 |
| 120 | 12.5 | 18.75 | 12.5 | 40.9 | 52.1 | 982 | 4.34 | 164 | 207 | 1623 | 236 | 0.448 |
| 140 | 5 | 7.5 | 5 | 21 | 26.7 | 807 | 5.5 | 115 | 135 | 1253 | 170 | 0.547 |
| 140 | 6 | 9 | 6 | 24.9 | 31.8 | 944 | 5.45 | 135 | 159 | 1475 | 198 | 0.545 |
| 140 | 6.3 | 9.45 | 6.3 | 26.1 | 33.3 | 984 | 5.44 | 141 | 166 | 1540 | 206 | 0.544 |
| 140 | 8 | 12 | 8 | 32.6 | 41.6 | 1195 | 5.36 | 171 | 204 | 1892 | 249 | 0.539 |
| 140 | 10 | 15 | 10 | 40 | 50.9 | 1416 | 5.27 | 202 | 246 | 2272 | 294 | 0.534 |
| 140 | 12 | 18 | 12 | 47 | 59.9 | 1609 | 5.18 | 230 | 284 | 2616 | 333 | 0.529 |
| 140 | 12.5 | 18.75 | 12.5 | 48.7 | 62.1 | 1653 | 5.16 | 236 | 293 | 2696 | 342 | 0.528 |
| Size | Thick's | Corner Radii | Mass/m | Area of Section | Second Moment of Area | Radius of Gyration | Section Modulus | Plastic Modulus | Torsional Constants | Section Surface Area | ||
| Ext'l | Int'l | Inertia | Modulus | |||||||||
| B | T | ro | ri | M/m | A | I | r | Z | S | J | C | As |
| mm x mm | mm | mm | mm | kg/m | cm2 | cm4 | cm | cm3 | cm3 | cm4 | cm3 | m2/m |
| 150 | 5 | 7.5 | 5 | 22.6 | 28.7 | 1002 | 5.9 | 134 | 156 | 1550 | 197 | 0.587 |
| 150 | 6 | 9 | 6 | 26.8 | 34.2 | 1174 | 5.86 | 156 | 184 | 1828 | 230 | 0.585 |
| 150 | 6.3 | 9.45 | 6.3 | 28.1 | 35.8 | 1223 | 5.85 | 163 | 192 | 1909 | 240 | 0.584 |
| 150 | 8 | 12 | 8 | 35.1 | 44.8 | 1491 | 5.77 | 199 | 237 | 2351 | 291 | 0.579 |
| 150 | 10 | 15 | 10 | 43.1 | 54.9 | 1773 | 5.68 | 236 | 286 | 2832 | 344 | 0.574 |
| 150 | 12 | 18 | 12 | 50.8 | 64.7 | 2023 | 5.59 | 270 | 331 | 3272 | 391 | 0.569 |
| 150 | 12.5 | 18.75 | 12.5 | 52.7 | 67.1 | 2080 | 5.57 | 277 | 342 | 3375 | 402 | 0.568 |
| 150 | 16 | 24 | 16 | 65.2 | 83 | 2430 | 5.41 | 324 | 411 | 4026 | 467 | 0.559 |
| 160 | 5 | 7.5 | 5 | 24.1 | 30.7 | 1225 | 6.31 | 153 | 178 | 1892 | 226 | 0.627 |
| 160 | 6 | 9 | 6 | 28.7 | 36.6 | 1437 | 6.27 | 180 | 210 | 2233 | 264 | 0.625 |
| 160 | 6.3 | 9.45 | 6.3 | 30.1 | 38.3 | 1499 | 6.26 | 187 | 220 | 2333 | 275 | 0.624 |
| 160 | 8 | 12 | 8 | 37.6 | 48 | 1831 | 6.18 | 229 | 272 | 2880 | 335 | 0.619 |
| 160 | 10 | 15 | 10 | 46.3 | 58.9 | 2186 | 6.09 | 273 | 329 | 3478 | 398 | 0.614 |
| 160 | 12 | 18 | 12 | 54.6 | 69.5 | 2502 | 6 | 313 | 382 | 4028 | 454 | 0.609 |
| 160 | 12.5 | 18.75 | 12.5 | 56.6 | 72.1 | 2576 | 5.98 | 322 | 395 | 4158 | 467 | 0.608 |
| 160 | 16 | 24 | 16 | 70.2 | 89.4 | 3028 | 5.82 | 379 | 476 | 4988 | 546 | 0.599 |
| 180 | 5 | 7.5 | 5 | 27.3 | 34.7 | 1765 | 7.13 | 196 | 227 | 2718 | 290 | 0.707 |
| 180 | 6 | 9 | 6 | 32.5 | 41.4 | 2077 | 7.09 | 231 | 269 | 3215 | 340 | 0.705 |
| 180 | 6.3 | 9.45 | 6.3 | 34 | 43.3 | 2168 | 7.07 | 241 | 281 | 3361 | 355 | 0.704 |
| 180 | 8 | 12 | 8 | 42.7 | 54.4 | 2661 | 7 | 296 | 349 | 4162 | 434 | 0.699 |
| 180 | 10 | 15 | 10 | 52.5 | 66.9 | 3193 | 6.91 | 355 | 424 | 5048 | 518 | 0.694 |
| 180 | 12 | 18 | 12 | 62.1 | 79.1 | 3677 | 6.82 | 409 | 494 | 5873 | 595 | 0.689 |
| 180 | 12.5 | 18.75 | 12.5 | 64.4 | 82.1 | 3790 | 6.8 | 421 | 511 | 6070 | 613 | 0.688 |
| 180 | 16 | 24 | 16 | 80.2 | 102 | 4504 | 6.64 | 500 | 621 | 7343 | 724 | 0.679 |
| 200 | 5 | 7.5 | 5 | 30.4 | 38.7 | 2445 | 7.95 | 245 | 283 | 3756 | 362 | 0.787 |
| 200 | 6 | 9 | 6 | 36.2 | 46.2 | 2883 | 7.9 | 288 | 335 | 4449 | 426 | 0.785 |
| 200 | 6.3 | 9.45 | 6.3 | 38 | 48.4 | 3011 | 7.89 | 301 | 350 | 4653 | 444 | 0.784 |
| 200 | 8 | 12 | 8 | 47.7 | 60.8 | 3709 | 7.81 | 371 | 436 | 5778 | 545 | 0.779 |
| 200 | 10 | 15 | 10 | 58.8 | 74.9 | 4471 | 7.72 | 447 | 531 | 7031 | 655 | 0.774 |
| 200 | 12 | 18 | 12 | 69.6 | 88.7 | 5171 | 7.64 | 517 | 621 | 8208 | 754 | 0.769 |
| 200 | 12.5 | 18.75 | 12.5 | 72.3 | 92.1 | 5336 | 7.61 | 534 | 643 | 8491 | 778 | 0.768 |
| 200 | 16 | 24 | 16 | 90.3 | 115 | 6394 | 7.46 | 639 | 785 | 10340 | 927 | 0.759 |
| 220 | 6 | 9 | 6 | 40 | 51 | 3875 | 8.72 | 352 | 408 | 5963 | 521 | 0.865 |
| 220 | 6.3 | 9.45 | 6.3 | 41.9 | 53.4 | 4049 | 8.71 | 368 | 427 | 6240 | 544 | 0.864 |
| 220 | 8 | 12 | 8 | 52.7 | 67.2 | 5002 | 8.63 | 455 | 532 | 7765 | 669 | 0.859 |
| 220 | 10 | 15 | 10 | 65.1 | 82.9 | 6050 | 8.54 | 550 | 650 | 9473 | 807 | 0.854 |
| 220 | 12 | 18 | 12 | 77.2 | 98.3 | 7023 | 8.45 | 638 | 762 | 11091 | 933 | 0.849 |
| 220 | 12.5 | 18.75 | 12.5 | 80.1 | 102 | 7254 | 8.43 | 659 | 789 | 11481 | 963 | 0.848 |
| 220 | 16 | 24 | 16 | 100 | 128 | 8749 | 8.27 | 795 | 969 | 14054 | 1156 | 0.839 |
| Size | Thick's | Corner Radii | Mass/m | Area of Section | Second Moment of Area | Radius of Gyration | Section Modulus | Plastic Modulus | Torsional Constants | Section Surface Area | ||
| Ext'l | Int'l | Inertia | Modulus | |||||||||
| B | T | ro | ri | M/m | A | I | r | Z | S | J | C | As |
| mm x mm | mm | mm | mm | kg/m | cm2 | cm4 | cm | cm3 | cm3 | cm4 | cm3 | m2/m |
| 250 | 5 | 7.5 | 5 | 38.3 | 48.7 | 4861 | 9.99 | 389 | 447 | 7430 | 577 | 0.987 |
| 250 | 6 | 9 | 6 | 45.7 | 58.2 | 5752 | 9.94 | 460 | 531 | 8825 | 681 | 0.985 |
| 250 | 6.3 | 9.45 | 6.3 | 47.9 | 61 | 6014 | 9.93 | 481 | 556 | 9238 | 712 | 0.984 |
| 250 | 8 | 12 | 8 | 60.3 | 76.8 | 7455 | 9.86 | 596 | 694 | 11525 | 880 | 0.979 |
| 250 | 10 | 15 | 10 | 74.5 | 94.9 | 9055 | 9.77 | 724 | 851 | 14106 | 1065 | 0.974 |
| 250 | 12 | 18 | 12 | 88.5 | 113 | 10556 | 9.68 | 844 | 1000 | 16567 | 1237 | 0.969 |
| 250 | 12.5 | 18.75 | 12.5 | 91.9 | 117 | 10915 | 9.66 | 873 | 1037 | 17164 | 1279 | 0.968 |
| 250 | 16 | 24 | 16 | 115 | 147 | 13267 | 9.5 | 1061 | 1280 | 21138 | 1546 | 0.959 |
| 260 | 6 | 9 | 6 | 47.6 | 60.6 | 6491 | 10.4 | 499 | 576 | 9951 | 740 | 1.02 |
| 260 | 6.3 | 9.45 | 6.3 | 49.9 | 63.5 | 6788 | 10.3 | 522 | 603 | 10417 | 773 | 1.02 |
| 260 | 8 | 12 | 8 | 62.8 | 80 | 8423 | 10.3 | 648 | 753 | 13006 | 956 | 1.02 |
| 260 | 10 | 15 | 10 | 77.7 | 98.9 | 10242 | 10.2 | 788 | 924 | 15932 | 1159 | 1.01 |
| 260 | 12 | 18 | 12 | 92.2 | 117 | 11954 | 10.1 | 920 | 1087 | 18729 | 1348 | 1.01 |
| 260 | 12.5 | 18.75 | 12.5 | 95.8 | 122 | 12365 | 10.1 | 951 | 1127 | 19409 | 1394 | 1.01 |
| 260 | 16 | 24 | 16 | 120 | 153 | 15061 | 9.91 | 1159 | 1394 | 23942 | 1689 | 0.999 |
| 300 | 6 | 9 | 6 | 55.1 | 70.2 | 10080 | 12 | 672 | 772 | 15407 | 997 | 1.18 |
| 300 | 6.3 | 9.45 | 6.3 | 57.8 | 73.6 | 10547 | 12 | 703 | 809 | 16136 | 1043 | 1.18 |
| 300 | 8 | 12 | 8 | 72.8 | 92.8 | 13128 | 11.9 | 875 | 1013 | 20194 | 1294 | 1.18 |
| 300 | 10 | 15 | 10 | 90.2 | 115 | 16026 | 11.8 | 1068 | 1246 | 24807 | 1575 | 1.17 |
| 300 | 12 | 18 | 12 | 107 | 137 | 18777 | 11.7 | 1252 | 1470 | 29249 | 1840 | 1.17 |
| 300 | 12.5 | 18.75 | 12.5 | 112 | 142 | 19442 | 11.7 | 1296 | 1525 | 30333 | 1904 | 1.17 |
| 300 | 16 | 24 | 16 | 141 | 179 | 23850 | 11.5 | 1590 | 1895 | 37622 | 2325 | 1.16 |
| 350 | 8 | 12 | 8 | 85.4 | 109 | 21129 | 13.9 | 1207 | 1392 | 32384 | 1789 | 1.38 |
| 350 | 10 | 15 | 10 | 106 | 135 | 25884 | 13.9 | 1479 | 1715 | 39886 | 2185 | 1.37 |
| 350 | 12 | 18 | 12 | 126 | 161 | 30435 | 13.8 | 1739 | 2030 | 47154 | 2563 | 1.37 |
| 350 | 12.5 | 18.75 | 12.5 | 131 | 167 | 31541 | 13.7 | 1802 | 2107 | 48934 | 2654 | 1.37 |
| 350 | 16 | 24 | 16 | 166 | 211 | 38942 | 13.6 | 2225 | 2630 | 60990 | 3264 | 1.36 |
| 400 | 8 | 12 | 8 | 97.9 | 125 | 31857 | 16 | 1593 | 1830 | 48695 | 2363 | 1.58 |
| 400 | 10 | 15 | 10 | 122 | 155 | 39128 | 15.9 | 1956 | 2260 | 60092 | 2895 | 1.57 |
| 400 | 12 | 18 | 12 | 145 | 185 | 46130 | 15.8 | 2306 | 2679 | 71181 | 3405 | 1.57 |
| 400 | 12.5 | 18.75 | 12.5 | 151 | 192 | 47839 | 15.8 | 2392 | 2782 | 73906 | 3530 | 1.57 |
| 400 | 16 | 24 | 16 | 191 | 243 | 59344 | 15.6 | 2967 | 3484 | 92442 | 4362 | 1.56 |
| 400 | 20 | 30 | 20 | 235 | 300 | 71535 | 15.4 | 3577 | 4247 | 112489 | 5237 | 1.55 |
| Size | Thick's | Corner Radii | Mass/m | Area of Section | Second Moment of Area | Radius of Gyration | Section Modulus | Plastic Modulus | Torsional Constants | Section Surface Area | ||
| Ext'l | Int'l | Inertia | Modulus | |||||||||
| B | T | ro | ri | M/m | A | I | r | Z | S | J | C | As |
| mm x mm | mm | mm | mm | kg/m | cm2 | cm4 | cm | cm3 | cm3 | cm4 | cm3 | m2/m |
Square Hollow Sections (SHS) are widely used in structural and mechanical applications due to their strength, symmetry, and clean appearance. Typical uses include building frames, columns, and support structures in construction. SHS are also commonly used in bridges, towers, and load-bearing frameworks where torsional resistance is important. In mechanical engineering, they are used for machine frames, equipment supports, and general fabrication. Their uniform shape also makes them popular in architectural applications such as handrails, balustrades, and exposed structural elements.
Hot formed square hollow sections offer several advantages over cold formed alternatives. The manufacturing process produces more uniform mechanical properties throughout the section and reduces residual stresses, improving structural performance. SHS provide excellent strength-to-weight ratio and high resistance to torsion due to their closed shape. The smooth external surface and consistent geometry simplify fabrication and welding. In addition, hot formed sections generally exhibit improved ductility and reliability in demanding structural applications.
A square hollow section is a structural steel tube with equal width and height, used in construction and engineering for strength and stability.
BS EN 10210 is a European standard covering hot finished structural hollow sections, including square, rectangular, and circular sections.
SHS sections are used in structural frames, columns, supports, bridges, and general fabrication due to their strength and clean appearance.
Hot formed SHS have more uniform mechanical properties and reduced residual stresses, making them better for structural applications.
Section modulus is a measure of a section’s strength in bending and is used in structural design calculations.
