CHS 355.6×6.3
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 | 6.3 mm | 0.248031 in |
| Outside diameter | 355.6 mm | 14 in |
| Inside diameter | 343 mm | 13.5039 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 105,000,000 mm⁴ | 252.2635 in⁴ |
| Elastic modulus, Sₓ | 593,000 mm³ | 36.1871 in³ |
| Plastic modulus, Zₓ | 769,000 mm³ | 46.9273 in³ |
| Radius of gyration, rₓ | 124 mm | 4.8819 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 | 105,000,000 mm⁴ | 252.2635 in⁴ |
| Elastic modulus, S_y | 593,000 mm³ | 36.1871 in³ |
| Plastic modulus, Z_y | 769,000 mm³ | 46.9273 in³ |
| Radius of gyration, r_y | 124 mm | 4.8819 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 211,000,000 mm⁴ | 506.9295 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 54.3 kg/m | 36.4879 lb/ft |