Steel Beam Sizes / AISC / HSS Rectangular / HSS 8x4x1/8
HSS 8x4x1/8 Steel Beam Dimensions and Properties
AISC Rectangular HSS · v16.0
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
HSS 8x4x1/8 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 | 9.86 lb/ft | 14.70 kg/m |
| Height | 8.00 in | 203.00 mm |
| Width | 4.00 in | 102.00 mm |
| Nominal tw | 0.125 in | 3.180 mm |
| Design tw | 0.116 in | 2.950 mm |
| Area | 2.70 in² | 1,740.00 mm² |
| Ix | 22.90 in⁴ | 9,530,000 mm⁴ |
| Iy | 7.90 in⁴ | 3,290,000 mm⁴ |
| Sx | 5.73 in³ | 93,900.00 mm³ |
| Sy | 3.95 in³ | 64,700.00 mm³ |
| Zx | 7.02 in³ | 115,000.00 mm³ |
| Zy | 4.36 in³ | 71,400.00 mm³ |
| rx | 2.92 in | 74.20 mm |
| ry | 1.71 in | 43.40 mm |
| J | 18.70 in⁴ | 7,780,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 8x4x1/8.
Lighter in Rectangular HSS
HSS 4x2-1/2x1/4
- Weight
- 9.7 lb/ft (-2.0%)
- Depth
- 4.00 in (-50%)
- Ix
- 5.3 in⁴ (-77%)
Heavier in Rectangular HSS
HSS 4x3x1/4
- Weight
- 10.5 lb/ft (+6.6%)
- Depth
- 4.00 in (-50%)
- Ix
- 6.2 in⁴ (-73%)
Closest Iₓ in Rectangular HSS
HSS 6x3x3/8
- Weight
- 19.8 lb/ft (+101%)
- Depth
- 6.00 in (-25%)
- Ix
- 22.7 in⁴ (-0.9%)
Source: AISC Shapes Database v16.0 · Methodology