Steel Beam Sizes / AISC / W-Shapes / W18 / W18x283
W18x283 Dimensions, Weight and Section Properties
AISC Wide flange · v16.0
W18x283: 21.9 in depth, 11.9 in flange width, 283 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
W18x283 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 | 283.00 lb/ft | 421.00 kg/m |
| Depth, d | 21.90 in | 556.00 mm |
| Flange width, bf | 11.90 in | 302.00 mm |
| tw | 1.400 in | 35.600 mm |
| tf | 2.500 in | 63.500 mm |
| Area | 83.30 in² | 53,700.00 mm² |
| Ix | 6,170.00 in⁴ | 2,570,000,000 mm⁴ |
| Iy | 704.00 in⁴ | 293,000,000 mm⁴ |
| Sx | 565.00 in³ | 9,260,000 mm³ |
| Sy | 118.00 in³ | 1,930,000 mm³ |
| Zx | 676.00 in³ | 11,100,000 mm³ |
| Zy | 185.00 in³ | 3,030,000 mm³ |
| rx | 8.61 in | 219.00 mm |
| ry | 2.91 in | 73.90 mm |
| J | 134.00 in⁴ | 55,800,000 mm⁴ |
| Cw | 65,900.00 in⁶ | 17,700,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus W18x283.
Lighter in W18
W18x258
- Weight
- 258.0 lb/ft (-8.8%)
- Depth
- 21.50 in (-1.8%)
- Ix
- 5,510.0 in⁴ (-11%)
Heavier in W18
W18x311
- Weight
- 311.0 lb/ft (+9.9%)
- Depth
- 22.30 in (+1.8%)
- Ix
- 6,970.0 in⁴ (+13%)
Another Iₓ option in W18
W18x234
- Weight
- 234.0 lb/ft (-17%)
- Depth
- 21.10 in (-3.7%)
- Ix
- 4,900.0 in⁴ (-21%)
Similar weight in W21
W21x275
- Weight
- 275.0 lb/ft (-2.8%)
- Depth
- 24.10 in (+10%)
- Ix
- 7,690.0 in⁴ (+25%)
Source: AISC Shapes Database v16.0 · Methodology