CHS 355.6×7.1
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 | 7.1 mm | 0.279528 in |
| Outside diameter | 355.6 mm | 14 in |
| Inside diameter | 341.4 mm | 13.4409 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 118,000,000 mm⁴ | 283.4961 in⁴ |
| Elastic modulus, Sₓ | 664,000 mm³ | 40.5198 in³ |
| Plastic modulus, Zₓ | 862,000 mm³ | 52.6025 in³ |
| Radius of gyration, rₓ | 123 mm | 4.8425 in |
| Distance to top fibre | 177.8 mm | 7 in |
| Distance to bottom fibre | 177.8 mm | 7 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 118,000,000 mm⁴ | 283.4961 in⁴ |
| Elastic modulus, S_y | 664,000 mm³ | 40.5198 in³ |
| Plastic modulus, Z_y | 862,000 mm³ | 52.6025 in³ |
| Radius of gyration, r_y | 123 mm | 4.8425 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 236,000,000 mm⁴ | 566.9923 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 61 kg/m | 40.9901 lb/ft |