Steel Beam Sizes / AISC / S-Shapes / S20x75
S20x75 Dimensions, Weight and Section Properties
AISC American standard beams · v16.0
S20x75: 20 in depth, 6.39 in flange width, 75 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
S20x75 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 | 75.00 lb/ft | 112.00 kg/m |
| Depth, d | 20.00 in | 508.00 mm |
| Flange width, bf | 6.39 in | 162.00 mm |
| tw | 0.635 in | 16.100 mm |
| tf | 0.795 in | 20.200 mm |
| Area | 22.00 in² | 14,200.00 mm² |
| Ix | 1,280.00 in⁴ | 533,000,000 mm⁴ |
| Iy | 29.50 in⁴ | 12,300,000 mm⁴ |
| Sx | 128.00 in³ | 2,100,000 mm³ |
| Sy | 9.25 in³ | 152,000.00 mm³ |
| Zx | 152.00 in³ | 2,490,000 mm³ |
| Zy | 16.70 in³ | 274,000.00 mm³ |
| rx | 7.62 in | 194.00 mm |
| ry | 1.16 in | 29.50 mm |
| J | 4.59 in⁴ | 1,910,000 mm⁴ |
| Cw | 2,720.00 in⁶ | 730,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus S20x75.
Lighter in S20
S20x66
- Weight
- 66.0 lb/ft (-12%)
- Depth
- 20.00 in (0.0%)
- Ix
- 1,190.0 in⁴ (-7.0%)
Heavier in S20
S20x86
- Weight
- 86.0 lb/ft (+15%)
- Depth
- 20.30 in (+1.5%)
- Ix
- 1,570.0 in⁴ (+23%)
Another Iₓ option in S20
S20x96
- Weight
- 96.0 lb/ft (+28%)
- Depth
- 20.30 in (+1.5%)
- Ix
- 1,670.0 in⁴ (+30%)
Similar weight in S24
S24x80
- Weight
- 80.0 lb/ft (+6.7%)
- Depth
- 24.00 in (+20%)
- Ix
- 2,100.0 in⁴ (+64%)
Source: AISC Shapes Database v16.0 · Methodology