CHS 168.3×5.6
Circular hollow sections from Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1.
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Thickness, t | 5.6 mm | 0.220472 in |
| Outside diameter | 168.3 mm | 6.626 in |
| Inside diameter | 157.1 mm | 6.185 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 9,480,000 mm⁴ | 22.7758 in⁴ |
| Elastic modulus, Sₓ | 113,000 mm³ | 6.8957 in³ |
| Plastic modulus, Zₓ | 148,000 mm³ | 9.0315 in³ |
| Radius of gyration, rₓ | 57.6 mm | 2.2677 in |
| Distance to top fibre | 84.15 mm | 3.313 in |
| Distance to bottom fibre | 84.15 mm | 3.313 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 9,480,000 mm⁴ | 22.7758 in⁴ |
| Elastic modulus, S_y | 113,000 mm³ | 6.8957 in³ |
| Plastic modulus, Z_y | 148,000 mm³ | 9.0315 in³ |
| Radius of gyration, r_y | 57.6 mm | 2.2677 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 19,000,000 mm⁴ | 45.6477 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 22.5 kg/m | 15.1193 lb/ft |