CHS 168.3×8
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 | 8 mm | 0.314961 in |
| Outside diameter | 168.3 mm | 6.626 in |
| Inside diameter | 152.3 mm | 5.9961 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 13,000,000 mm⁴ | 31.2326 in⁴ |
| Elastic modulus, Sₓ | 154,000 mm³ | 9.3977 in³ |
| Plastic modulus, Zₓ | 206,000 mm³ | 12.5709 in³ |
| Radius of gyration, rₓ | 56.7 mm | 2.2323 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 | 13,000,000 mm⁴ | 31.2326 in⁴ |
| Elastic modulus, S_y | 154,000 mm³ | 9.3977 in³ |
| Plastic modulus, Z_y | 206,000 mm³ | 12.5709 in³ |
| Radius of gyration, r_y | 56.7 mm | 2.2323 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 26,000,000 mm⁴ | 62.4653 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 31.6 kg/m | 21.2342 lb/ft |