Steel Beam Sizes / AISC / W-Shapes / W18 / W18x46
W18x46 Dimensions, Weight and Section Properties
AISC Wide flange · v16.0
W18x46: 18.1 in depth, 6.06 in flange width, 46 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
W18x46 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 | 46.00 lb/ft | 68.00 kg/m |
| Depth, d | 18.10 in | 460.00 mm |
| Flange width, bf | 6.06 in | 154.00 mm |
| tw | 0.360 in | 9.140 mm |
| tf | 0.605 in | 15.400 mm |
| Area | 13.50 in² | 8,710.00 mm² |
| Ix | 712.00 in⁴ | 296,000,000 mm⁴ |
| Iy | 22.50 in⁴ | 9,370,000 mm⁴ |
| Sx | 78.80 in³ | 1,290,000 mm³ |
| Sy | 7.43 in³ | 122,000.00 mm³ |
| Zx | 90.70 in³ | 1,490,000 mm³ |
| Zy | 11.70 in³ | 192,000.00 mm³ |
| rx | 7.25 in | 184.00 mm |
| ry | 1.29 in | 32.80 mm |
| J | 1.22 in⁴ | 508,000.00 mm⁴ |
| Cw | 1,720.00 in⁶ | 462,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus W18x46.
Lighter in W18
W18x40
- Weight
- 40.0 lb/ft (-13%)
- Depth
- 17.90 in (-1.1%)
- Ix
- 612.0 in⁴ (-14%)
Heavier in W18
W18x50
- Weight
- 50.0 lb/ft (+8.7%)
- Depth
- 18.00 in (-0.6%)
- Ix
- 800.0 in⁴ (+12%)
Another Iₓ option in W18
W18x55
- Weight
- 55.0 lb/ft (+20%)
- Depth
- 18.10 in (0.0%)
- Ix
- 890.0 in⁴ (+25%)
Similar weight in W16
W16x45
- Weight
- 45.0 lb/ft (-2.2%)
- Depth
- 16.10 in (-11%)
- Ix
- 586.0 in⁴ (-18%)
Source: AISC Shapes Database v16.0 · Methodology