Steel Beam Sizes / UK / CHS / CHS 21.3×2.9
CHS 21.3×2.9 Steel Beam Dimensions and Properties
UK Circular hollow sections · v2023.11
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
CHS 21.3×2.9 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 | 0.89 lb/ft | 1.32 kg/m |
| OD | 0.839 in | 21.300 mm |
| t | 0.114 in | 2.900 mm |
| Area | 0.26 in² | 168.00 mm² |
| Ix | 0.02 in⁴ | 7,270.00 mm⁴ |
| Iy | 0.02 in⁴ | 7,270.00 mm⁴ |
| Sx | 0.04 in³ | 683.00 mm³ |
| Sy | 0.04 in³ | 683.00 mm³ |
| Zx | 0.06 in³ | 990.00 mm³ |
| Zy | 0.06 in³ | 990.00 mm³ |
| rx | 0.26 in | 6.59 mm |
| ry | 0.26 in | 6.59 mm |
| J | 0.03 in⁴ | 14,500.00 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus CHS 21.3×2.9.
Lighter in Circular hollow sections
CHS 21.3×2.6
- Weight
- 1.2 kg/m (-9.1%)
- Depth
- — mm
- Ix
- 6,810 mm⁴ (-6.3%)
Heavier in Circular hollow sections
CHS 21.3×3.2
- Weight
- 1.4 kg/m (+8.3%)
- Depth
- — mm
- Ix
- 7,680 mm⁴ (+5.6%)
Closest Iₓ in Circular hollow sections
CHS 26.9×2.6
- Weight
- 1.6 kg/m (+18%)
- Depth
- — mm
- Ix
- 14,800 mm⁴ (+104%)
Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology