Steel Beam Sizes / AISC / HSS Rectangular / HSS 20x12x3/8
HSS 20x12x3/8 Dimensions, Weight and Section Properties
AISC Rectangular HSS · v16.0
HSS 20x12x3/8: 78.52 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
HSS 20x12x3/8 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 | 78.52 lb/ft | 117.00 kg/m |
| Height | 20.00 in | 508.00 mm |
| Width | 12.00 in | 305.00 mm |
| Nominal tw | 0.375 in | 9.530 mm |
| Design tw | 0.349 in | 8.860 mm |
| Area | 21.50 in² | 13,900.00 mm² |
| Ix | 1,200.00 in⁴ | 499,000,000 mm⁴ |
| Iy | 547.00 in⁴ | 228,000,000 mm⁴ |
| Sx | 120.00 in³ | 1,970,000 mm³ |
| Sy | 91.10 in³ | 1,490,000 mm³ |
| Zx | 144.00 in³ | 2,360,000 mm³ |
| Zy | 102.00 in³ | 1,670,000 mm³ |
| rx | 7.45 in | 189.00 mm |
| ry | 5.04 in | 128.00 mm |
| J | 1,180.00 in⁴ | 491,000,000 mm⁴ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus HSS 20x12x3/8.
Lighter in Rectangular HSS
HSS 12x8x5/8
- Weight
- 76.3 lb/ft (-2.8%)
- Depth
- 12.00 in (-40%)
- Ix
- 397.0 in⁴ (-67%)
Heavier in Rectangular HSS
HSS 22x16x5/16
- Weight
- 78.6 lb/ft (+0.1%)
- Depth
- 22.00 in (+10%)
- Ix
- 1,550.0 in⁴ (+29%)
Another Iₓ option in Rectangular HSS
HSS 20x8x1/2
- Weight
- 89.7 lb/ft (+14%)
- Depth
- 20.00 in (0.0%)
- Ix
- 1,190.0 in⁴ (-0.8%)
Source: AISC Shapes Database v16.0 · Methodology