Steel Beam Sizes / Europe / CHS / CHS 323.9×5
CHS 323.9×5 Steel Beam Dimensions and Properties
EN Circular hollow sections · v2026.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
CHS 323.9×5 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 | 26.41 lb/ft | 39.30 kg/m |
| OD | 12.752 in | 323.900 mm |
| t | 0.197 in | 5.000 mm |
| Area | 7.77 in² | 5,010.00 mm² |
| Ix | 153.04 in⁴ | 63,700,000 mm⁴ |
| Iy | 153.04 in⁴ | 63,700,000 mm⁴ |
| Sx | 23.98 in³ | 393,000.00 mm³ |
| Sy | 23.98 in³ | 393,000.00 mm³ |
| Zx | 31.06 in³ | 509,000.00 mm³ |
| Zy | 31.06 in³ | 509,000.00 mm³ |
| rx | 4.45 in | 113.00 mm |
| ry | 4.45 in | 113.00 mm |
| J | 305.12 in⁴ | 127,000,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus CHS 323.9×5.
Lighter in Circular hollow sections
CHS 168.3×10
- Weight
- 39.0 kg/m (-0.8%)
- Depth
- — mm
- Ix
- 15,600,000 mm⁴ (-76%)
Heavier in Circular hollow sections
CHS 273×6.3
- Weight
- 41.4 kg/m (+5.3%)
- Depth
- — mm
- Ix
- 47,000,000 mm⁴ (-26%)
Closest Iₓ in Circular hollow sections
CHS 244.5×12.5
- Weight
- 71.5 kg/m (+82%)
- Depth
- — mm
- Ix
- 61,500,000 mm⁴ (-3.5%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology