There are 23 W18 shapes in the AISC Shapes Database v16.0, from W18x35 (35 lb/ft) to W18x311 (311 lb/ft). All are nominally 18 in deep; actual depth increases with weight.
Units
| Shape | Weight (lb/ft) | Area (in²) | Depth (in) | Flange width (in) | Web (in) | Flange (in) | Ix (in⁴) | Sx (in³) |
|---|---|---|---|---|---|---|---|---|
| W18x35 | 35 | 10.3 | 17.7 | 6 | 0.3 | 0.425 | 510 | 57.6 |
| W18x40 | 40 | 11.8 | 17.9 | 6.02 | 0.315 | 0.525 | 612 | 68.4 |
| W18x46 | 46 | 13.5 | 18.1 | 6.06 | 0.36 | 0.605 | 712 | 78.8 |
| W18x50 | 50 | 14.7 | 18 | 7.5 | 0.355 | 0.57 | 800 | 88.9 |
| W18x55 | 55 | 16.2 | 18.1 | 7.53 | 0.39 | 0.63 | 890 | 98.3 |
| W18x60 | 60 | 17.6 | 18.2 | 7.56 | 0.415 | 0.695 | 984 | 108 |
| W18x65 | 65 | 19.1 | 18.4 | 7.59 | 0.45 | 0.75 | 1,070 | 117 |
| W18x71 | 71 | 20.9 | 18.5 | 7.64 | 0.495 | 0.81 | 1,170 | 127 |
| W18x76 | 76 | 22.3 | 18.2 | 11 | 0.425 | 0.68 | 1,330 | 146 |
| W18x86 | 86 | 25.3 | 18.4 | 11.1 | 0.48 | 0.77 | 1,530 | 166 |
| W18x97 | 97 | 28.5 | 18.6 | 11.1 | 0.535 | 0.87 | 1,750 | 188 |
| W18x106 | 106 | 31.1 | 18.7 | 11.2 | 0.59 | 0.94 | 1,910 | 204 |
| W18x119 | 119 | 35.1 | 19 | 11.3 | 0.655 | 1.06 | 2,190 | 231 |
| W18x130 | 130 | 38.3 | 19.3 | 11.2 | 0.67 | 1.2 | 2,460 | 256 |
| W18x143 | 143 | 42 | 19.5 | 11.2 | 0.73 | 1.32 | 2,750 | 282 |
| W18x158 | 158 | 46.3 | 19.7 | 11.3 | 0.81 | 1.44 | 3,060 | 310 |
| W18x175 | 175 | 51.4 | 20 | 11.4 | 0.89 | 1.59 | 3,450 | 344 |
| W18x192 | 192 | 56.2 | 20.4 | 11.5 | 0.96 | 1.75 | 3,870 | 380 |
| W18x211 | 211 | 62.3 | 20.7 | 11.6 | 1.06 | 1.91 | 4,330 | 419 |
| W18x234 | 234 | 68.6 | 21.1 | 11.7 | 1.16 | 2.11 | 4,900 | 466 |
| W18x258 | 258 | 76 | 21.5 | 11.8 | 1.28 | 2.3 | 5,510 | 514 |
| W18x283 | 283 | 83.3 | 21.9 | 11.9 | 1.4 | 2.5 | 6,170 | 565 |
| W18x311 | 311 | 91.6 | 22.3 | 12 | 1.52 | 2.74 | 6,970 | 624 |
See all depths in the wide flange beam sizes chart, or get total weight with the steel beam weight calculator.
Source: AISC Shapes Database v16.0, consistent with the AISC Steel Construction Manual, 16th Edition. Last updated: September 2026. Reference information only, not engineering advice. Disclaimer.