Steel Beam Sizes / Europe / RHS / RHS 120×80×6.3
RHS 120×80×6.3 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 120×80×6.3 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 | 12.23 lb/ft | 18.20 kg/m |
| Height | 4.72 in | 120.00 mm |
| Width | 3.15 in | 80.00 mm |
| t | 0.248 in | 6.300 mm |
| Area | 3.60 in² | 2,320.00 mm² |
| Ix | 10.57 in⁴ | 4,400,000 mm⁴ |
| Iy | 5.53 in⁴ | 2,300,000 mm⁴ |
| Sx | 4.47 in³ | 73,300.00 mm³ |
| Sy | 3.51 in³ | 57,600.00 mm³ |
| Zx | 5.55 in³ | 91,000.00 mm³ |
| Zy | 4.16 in³ | 68,200.00 mm³ |
| rx | 1.72 in | 43.60 mm |
| ry | 1.24 in | 31.50 mm |
| J | 11.70 in⁴ | 4,870,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 120×80×6.3.
Lighter in Rectangular hollow sections
RHS 120×60×7.1
- Weight
- 18.1 kg/m (-0.5%)
- Depth
- 120.0 mm (0.0%)
- Ix
- 3,910,000 mm⁴ (-11%)
Heavier in Rectangular hollow sections
RHS 150×100×5
- Weight
- 18.6 kg/m (+2.2%)
- Depth
- 150.0 mm (+25%)
- Ix
- 7,390,000 mm⁴ (+68%)
Closest Iₓ in Rectangular hollow sections
RHS 120×60×8.8
- Weight
- 21.8 kg/m (+20%)
- Depth
- 120.0 mm (0.0%)
- Ix
- 4,520,000 mm⁴ (+2.7%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology