Steel Beam Sizes / AISC / W-Shapes / W16 / W16x40
W16x40 Dimensions, Weight and Section Properties
AISC Wide flange · v16.0
W16x40: 16 in depth, 7 in flange width, 40 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
Need this steel supplied or fabricated?
Request project pricing for delivery in the United States or Canada.
Get a steel quote →Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
W16x40 dimensions
Not to scale. Dimensions shown for reference.
Section properties
Symbols match the steel section finder. Imperial and metric values are shown side by side.
| Property | Imperial | Metric |
|---|---|---|
| Weight | 40.00 lb/ft | 60.00 kg/m |
| Depth, d | 16.00 in | 406.00 mm |
| Flange width, bf | 7.00 in | 178.00 mm |
| tw | 0.305 in | 7.750 mm |
| tf | 0.505 in | 12.800 mm |
| Area | 11.80 in² | 7,610.00 mm² |
| Ix | 518.00 in⁴ | 216,000,000 mm⁴ |
| Iy | 28.90 in⁴ | 12,000,000 mm⁴ |
| Sx | 64.70 in³ | 1,060,000 mm³ |
| Sy | 8.25 in³ | 135,000.00 mm³ |
| Zx | 73.00 in³ | 1,200,000 mm³ |
| Zy | 12.70 in³ | 208,000.00 mm³ |
| rx | 6.63 in | 168.00 mm |
| ry | 1.57 in | 39.90 mm |
| J | 0.79 in⁴ | 330,000.00 mm⁴ |
| Cw | 1,730.00 in⁶ | 465,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus W16x40.
Lighter in W16
W16x36
- Weight
- 36.0 lb/ft (-10%)
- Depth
- 15.90 in (-0.6%)
- Ix
- 448.0 in⁴ (-14%)
Heavier in W16
W16x45
- Weight
- 45.0 lb/ft (+13%)
- Depth
- 16.10 in (+0.6%)
- Ix
- 586.0 in⁴ (+13%)
Another Iₓ option in W16
W16x50
- Weight
- 50.0 lb/ft (+25%)
- Depth
- 16.30 in (+1.9%)
- Ix
- 659.0 in⁴ (+27%)
Similar weight in W18
W18x40
- Weight
- 40.0 lb/ft (0.0%)
- Depth
- 17.90 in (+12%)
- Ix
- 612.0 in⁴ (+18%)
Source: AISC Shapes Database v16.0 · Methodology