Steel Beam Sizes / AISC / S-Shapes / S20x86
S20x86 Dimensions, Weight and Section Properties
AISC American standard beams · v16.0
S20x86: 20.3 in depth, 7.06 in flange width, 86 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
S20x86 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 | 86.00 lb/ft | 128.00 kg/m |
| Depth, d | 20.30 in | 516.00 mm |
| Flange width, bf | 7.06 in | 179.00 mm |
| tw | 0.660 in | 16.800 mm |
| tf | 0.920 in | 23.400 mm |
| Area | 25.30 in² | 16,300.00 mm² |
| Ix | 1,570.00 in⁴ | 653,000,000 mm⁴ |
| Iy | 46.60 in⁴ | 19,400,000 mm⁴ |
| Sx | 155.00 in³ | 2,540,000 mm³ |
| Sy | 13.20 in³ | 216,000.00 mm³ |
| Zx | 183.00 in³ | 3,000,000 mm³ |
| Zy | 23.10 in³ | 379,000.00 mm³ |
| rx | 7.89 in | 200.00 mm |
| ry | 1.36 in | 34.50 mm |
| J | 6.65 in⁴ | 2,770,000 mm⁴ |
| Cw | 4,370.00 in⁶ | 1,170,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus S20x86.
Lighter in S20
S20x75
- Weight
- 75.0 lb/ft (-13%)
- Depth
- 20.00 in (-1.5%)
- Ix
- 1,280.0 in⁴ (-18%)
Heavier in S20
S20x96
- Weight
- 96.0 lb/ft (+12%)
- Depth
- 20.30 in (0.0%)
- Ix
- 1,670.0 in⁴ (+6.4%)
Another Iₓ option in S20
S20x66
- Weight
- 66.0 lb/ft (-23%)
- Depth
- 20.00 in (-1.5%)
- Ix
- 1,190.0 in⁴ (-24%)
Similar weight in S24
S24x90
- Weight
- 90.0 lb/ft (+4.7%)
- Depth
- 24.00 in (+18%)
- Ix
- 2,250.0 in⁴ (+43%)
Source: AISC Shapes Database v16.0 · Methodology