Steel Beam Sizes / Europe / CHS / CHS 323.9×16
CHS 323.9×16 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 323.9×16 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 | 81.31 lb/ft | 121.00 kg/m |
| OD | 12.752 in | 323.900 mm |
| t | 0.630 in | 16.000 mm |
| Area | 24.03 in² | 15,500.00 mm² |
| Ix | 442.06 in⁴ | 184,000,000 mm⁴ |
| Iy | 442.06 in⁴ | 184,000,000 mm⁴ |
| Sx | 69.57 in³ | 1,140,000 mm³ |
| Sy | 69.57 in³ | 1,140,000 mm³ |
| Zx | 92.76 in³ | 1,520,000 mm³ |
| Zy | 92.76 in³ | 1,520,000 mm³ |
| rx | 4.29 in | 109.00 mm |
| ry | 4.29 in | 109.00 mm |
| J | 884.12 in⁴ | 368,000,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus CHS 323.9×16.
Lighter in Circular hollow sections
CHS 355.6×14.2
- Weight
- 120.0 kg/m (-0.8%)
- Depth
- — mm
- Ix
- 222,000,000 mm⁴ (+21%)
Heavier in Circular hollow sections
CHS 508×10
- Weight
- 123.0 kg/m (+1.7%)
- Depth
- — mm
- Ix
- 485,000,000 mm⁴ (+164%)
Closest Iₓ in Circular hollow sections
CHS 355.6×11
- Weight
- 93.5 kg/m (-23%)
- Depth
- — mm
- Ix
- 177,000,000 mm⁴ (-3.8%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology