Steel Beam Sizes / Europe / RHS / RHS 120×80×10
RHS 120×80×10 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 120×80×10 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 | 18.41 lb/ft | 27.40 kg/m |
| Height | 4.72 in | 120.00 mm |
| Width | 3.15 in | 80.00 mm |
| t | 0.394 in | 10.000 mm |
| Area | 5.41 in² | 3,490.00 mm² |
| Ix | 14.63 in⁴ | 6,090,000 mm⁴ |
| Iy | 7.52 in⁴ | 3,130,000 mm⁴ |
| Sx | 6.22 in³ | 102,000.00 mm³ |
| Sy | 4.77 in³ | 78,100.00 mm³ |
| Zx | 7.99 in³ | 131,000.00 mm³ |
| Zy | 5.94 in³ | 97,300.00 mm³ |
| rx | 1.65 in | 41.80 mm |
| ry | 1.18 in | 29.90 mm |
| J | 16.53 in⁴ | 6,880,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 120×80×10.
Lighter in Rectangular hollow sections
RHS 200×120×5.6
- Weight
- 26.9 kg/m (-1.8%)
- Depth
- 200.0 mm (+67%)
- Ix
- 18,600,000 mm⁴ (+205%)
Heavier in Rectangular hollow sections
RHS 160×80×8
- Weight
- 27.6 kg/m (+0.7%)
- Depth
- 160.0 mm (+33%)
- Ix
- 10,900,000 mm⁴ (+79%)
Closest Iₓ in Rectangular hollow sections
RHS 150×100×4
- Weight
- 15.1 kg/m (-45%)
- Depth
- 150.0 mm (+25%)
- Ix
- 6,070,000 mm⁴ (-0.3%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology