Steel Beam Sizes / Europe / RHS / RHS 80×40×3.2
RHS 80×40×3.2 Steel Beam Dimensions and Properties
EN Rectangular hollow sections · v2026.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
RHS 80×40×3.2 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 | 3.78 lb/ft | 5.62 kg/m |
| Height | 3.15 in | 80.00 mm |
| Width | 1.57 in | 40.00 mm |
| t | 0.126 in | 3.200 mm |
| Area | 1.11 in² | 716.00 mm² |
| Ix | 1.37 in⁴ | 572,000.00 mm⁴ |
| Iy | 0.45 in⁴ | 189,000.00 mm⁴ |
| Sx | 0.87 in³ | 14,300.00 mm³ |
| Sy | 0.58 in³ | 9,460.00 mm³ |
| Zx | 1.10 in³ | 18,000.00 mm³ |
| Zy | 0.67 in³ | 11,000.00 mm³ |
| rx | 1.11 in | 28.30 mm |
| ry | 0.64 in | 16.30 mm |
| J | 1.11 in⁴ | 462,000.00 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 80×40×3.2.
Lighter in Rectangular hollow sections
RHS 80×40×3
- Weight
- 5.3 kg/m (-5.9%)
- Depth
- 80.0 mm (0.0%)
- Ix
- 542,000 mm⁴ (-5.2%)
Heavier in Rectangular hollow sections
RHS 60×40×4
- Weight
- 5.6 kg/m (+0.4%)
- Depth
- 60.0 mm (-25%)
- Ix
- 328,000 mm⁴ (-43%)
Closest Iₓ in Rectangular hollow sections
RHS 80×40×2.9
- Weight
- 5.1 kg/m (-8.7%)
- Depth
- 80.0 mm (0.0%)
- Ix
- 527,000 mm⁴ (-7.9%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology