This page lists the yield moment and weights of some common aluminium tubes. The figures are provided for information but I cannot guarantee they are accurate – either in general or for your tubes! Check the values before you use them for anything critical. The figures assume a yield/proof stress of 170MPa – this is generally the T6 temper. Other tempers will have different figures.
| Tube | OD (mm) | t (mm) | Wt (kg/m) | Yield moment (Nm) |
|---|---|---|---|---|
| 5/8” x 18swg | 15.875 | 1.219 | 0.15 | 32 |
| 5/8” x 16swg | 15.875 | 1.626 | 0.20 | 40 |
| ¾ x 18swg | 19.05 | 1.219 | 0.19 | 49 |
| ¾ x 16swg | 19.05 | 1.626 | 0.24 | 61 |
| 22 x 2 | 22 | 2 | 0.34 | 98 |
| 7/8 x 18swg | 22.225 | 1.219 | 0.22 | 68 |
| 7/8 x 16swg | 22.225 | 1.626 | 0.29 | 86 |
| 1” x 18swg | 25.4 | 1.219 | 0.25 | 91 |
| 1” x 16swg | 25.4 | 1.626 | 0.33 | 115 |
| 1 1/8” x 18swg | 28.575 | 1.219 | 0.28 | 117 |
| 30 x 2 | 30 | 2 | 0.48 | 196 |
| 1 ¼” x 16swg | 31.75 | 1.626 | 0.42 | 187 |
| 1 ½ x 16swg | 38.1 | 1.626 | 0.51 | 277 |
| 40 x 1.5 | 40 | 1.5 | 0.49 | 286 |
| 40 x 3 | 40 | 3 | 0.95 | 511 |
| 1 5/8 x 16swg | 40.175 | 1.626 | 0.54 | 310 |
| 1 ¾ x 16swg | 44.45 | 1.626 | 0.60 | 384 |
| 1 7/8 x 16swg | 47.625 | 1.626 | 0.64 | 444 |
| Scaffold tube | 48.4 | 4.5 | 1.69 | 1,061 |
| 50 x 1.5 | 50 | 1.5 | 0.62 | 457 |
| 50 x 2 | 50 | 2 | 0.82 | 592 |
| 2 x 16swg | 50.8 | 1.626 | 0.68 | 509 |
| 2 x 14swg | 50.8 | 2.032 | 0.85 | 621 |
| 2 x 10swg | 50.8 | 3.251 | 1.32 | 923 |
| 45 solid | 45 | 22.5 | 4.33 | 1,521 |
| 50 solid | 50 | 25 | 5.34 | 2,086 |
| 55 solid | 55 | 27.5 | 6.46 | 2,777 |
| 60 solid | 60 | 30 | 7.69 | 3,605 |
| 2 x ½ | 50.8 | 12.7 | 4.13 | 2,051 |
| 2 ¼ x 16swg | 57.15 | 1.626 | 0.77 | 651 |
| 2 ¼ x 10swg | 57.15 | 3.251 | 1.50 | 1,194 |
| 2 ¼ x ¼ | 57.15 | 6.35 | 2.76 | 1,975 |
| 2 ¼ x 3/8 | 57.15 | 9.525 | 3.88 | 2,500 |
| 60 x 2 | 60 | 2 | 0.99 | 869 |
| 60 x 3 | 60 | 3 | 1.46 | 1,240 |
| 60 x 5 | 60 | 5 | 2.35 | 1,866 |
| 60 x 10 | 60 | 10 | 4.27 | 2,893 |
| 2 ½ x 16swg | 63.5 | 1.626 | 0.86 | 810 |
| 2 ½ x 10swg | 63.5 | 3.251 | 1.67 | 1,499 |
| 2 ½ x 3/16 | 63.5 | 4.7625 | 2.39 | 2,043 |
| 2 ½ x ¼ | 63.5 | 6.35 | 3.10 | 2,523 |
| 2 ½ x 3/8 | 63.5 | 9.525 | 4.39 | 3,247 |
| 2 ½ x ½ | 63.5 | 12.7 | 5.51 | 3,720 |
| Flagpole 8m | 63.5 | 1.5 | 0.79 | 752 |
| Flagpole 6m | 65 | 1.5 | 0.81 | 789 |
| 2 ¾ x 16swg | 69.85 | 1.626 | 0.95 | 988 |
| 2 ¾ x 10swg | 69.85 | 3.251 | 1.85 | 1,840 |
| 2 ¾ x ¼ | 69.85 | 6.35 | 3.45 | 3,139 |
| 70 x 2 | 70 | 2 | 1.16 | 1,201 |
| 70 x 3 | 70 | 3 | 1.72 | 1,724 |
| 3 x 16swg | 76.2 | 1.626 | 1.04 | 1,182 |
| 3 x 10swg DD | 76.2 | 3.251 | 2.03 | 2,216 |
| 3 ¼ x 10swg | 82.55 | 3.251 | 2.20 | 2,626 |
| 3 ½ x 16swg | 88.9 | 1.626 | 1.21 | 1,624 |
| 3 ½ x 10swg | 88.9 | 3.251 | 2.38 | 3,072 |
| 3.5 x ¼ | 88.9 | 6.35 | 4.48 | 5,397 |
| 4 x 16swg | 101.6 | 1.626 | 1.39 | 2,136 |
| 4 x 10swg | 101.6 | 3.251 | 2.73 | 4,069 |
| 4 x ¼ | 101.6 | 6.35 | 5.17 | 7,243 |
| 4 ¼ x 10swg | 107.95 | 3.251 | 2.91 | 4,619 |
| 4 ½ x 10swg | 114.3 | 3.251 | 3.08 | 5,205 |
| 4 ½ x ¼ | 114.3 | 6.35 | 5.86 | 9,363 |
| 5 x 10swg | 127 | 3.251 | 3.44 | 6,482 |
| 5 x ¼ | 127 | 6.35 | 6.55 | 11,757 |
| 6 x 10swg | 152.4 | 3.251 | 4.14 | 9,454 |
