CHS 508×16
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 | 16 mm | 0.629921 in |
| Outside diameter | 508 mm | 20 in |
| Inside diameter | 476 mm | 18.7402 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 749,000,000 mm⁴ | 1,799.48 in⁴ |
| Elastic modulus, Sₓ | 2,950,000 mm³ | 180.02 in³ |
| Plastic modulus, Zₓ | 3,870,000 mm³ | 236.1619 in³ |
| Radius of gyration, rₓ | 174 mm | 6.8504 in |
| Distance to top fibre | 254 mm | 10 in |
| Distance to bottom fibre | 254 mm | 10 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 749,000,000 mm⁴ | 1,799.48 in⁴ |
| Elastic modulus, S_y | 2,950,000 mm³ | 180.02 in³ |
| Plastic modulus, Z_y | 3,870,000 mm³ | 236.1619 in³ |
| Radius of gyration, r_y | 174 mm | 6.8504 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1.50000e+9 mm⁴ | 3,603.764 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 194 kg/m | 130.362 lb/ft |