There is one W4 shape in the AISC Shapes Database v16.0: W4x13, 4.16 in deep with a 4.06 in flange, weighing 13 lb/ft. It is the smallest wide flange depth AISC lists.
W4 Beam Sizes Chart
Units
| Shape | Weight (lb/ft) | Area (in²) | Depth (in) | Flange width (in) | Web (in) | Flange (in) | Ix (in⁴) | Sx (in³) |
|---|---|---|---|---|---|---|---|---|
| W4x13 | 13 | 3.83 | 4.16 | 4.06 | 0.28 | 0.345 | 11.3 | 5.46 |
Other Small Wide Flange Beams
The shallowest W shapes AISC lists are W4, W5 and W6 beams:
Units
| Shape | Weight (lb/ft) | Area (in²) | Depth (in) | Flange width (in) | Web (in) | Flange (in) | Ix (in⁴) | Sx (in³) |
|---|---|---|---|---|---|---|---|---|
| W5x16 | 16 | 4.71 | 5.01 | 5 | 0.24 | 0.36 | 21.4 | 8.55 |
| W5x19 | 19 | 5.56 | 5.15 | 5.03 | 0.27 | 0.43 | 26.3 | 10.2 |
| W6x8.5 | 8.5 | 2.52 | 5.83 | 3.94 | 0.17 | 0.195 | 14.9 | 5.1 |
| W6x9 | 9 | 2.68 | 5.9 | 3.94 | 0.17 | 0.215 | 16.4 | 5.56 |
| W6x12 | 12 | 3.55 | 6.03 | 4 | 0.23 | 0.28 | 22.1 | 7.31 |
| W6x15 | 15 | 4.43 | 5.99 | 5.99 | 0.23 | 0.26 | 29.1 | 9.72 |
| W6x16 | 16 | 4.74 | 6.28 | 4.03 | 0.26 | 0.405 | 32.1 | 10.2 |
| W6x20 | 20 | 5.87 | 6.2 | 6.02 | 0.26 | 0.365 | 41.4 | 13.4 |
| W6x25 | 25 | 7.34 | 6.38 | 6.08 | 0.32 | 0.455 | 53.4 | 16.7 |
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.