Steel Beam Sizes / AISC / W-Shapes / W21 / W21x83
W21x83 Dimensions, Weight and Section Properties
AISC Wide flange · v16.0
W21x83: 21.4 in depth, 8.36 in flange width, 83 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
W21x83 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 | 83.00 lb/ft | 123.00 kg/m |
| Depth, d | 21.40 in | 544.00 mm |
| Flange width, bf | 8.36 in | 212.00 mm |
| tw | 0.515 in | 13.100 mm |
| tf | 0.835 in | 21.200 mm |
| Area | 24.40 in² | 15,700.00 mm² |
| Ix | 1,830.00 in⁴ | 762,000,000 mm⁴ |
| Iy | 81.40 in⁴ | 33,900,000 mm⁴ |
| Sx | 171.00 in³ | 2,800,000 mm³ |
| Sy | 19.50 in³ | 320,000.00 mm³ |
| Zx | 196.00 in³ | 3,210,000 mm³ |
| Zy | 30.50 in³ | 500,000.00 mm³ |
| rx | 8.67 in | 220.00 mm |
| ry | 1.83 in | 46.50 mm |
| J | 4.34 in⁴ | 1,810,000 mm⁴ |
| Cw | 8,630.00 in⁶ | 2,320,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus W21x83.
Lighter in W21
W21x73
- Weight
- 73.0 lb/ft (-12%)
- Depth
- 21.20 in (-0.9%)
- Ix
- 1,600.0 in⁴ (-13%)
Heavier in W21
W21x93
- Weight
- 93.0 lb/ft (+12%)
- Depth
- 21.60 in (+0.9%)
- Ix
- 2,070.0 in⁴ (+13%)
Another Iₓ option in W21
W21x68
- Weight
- 68.0 lb/ft (-18%)
- Depth
- 21.10 in (-1.4%)
- Ix
- 1,480.0 in⁴ (-19%)
Similar weight in W24
W24x84
- Weight
- 84.0 lb/ft (+1.2%)
- Depth
- 24.10 in (+13%)
- Ix
- 2,370.0 in⁴ (+30%)
Source: AISC Shapes Database v16.0 · Methodology