CHS 508×11
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 | 11 mm | 0.433071 in |
| Outside diameter | 508 mm | 20 in |
| Inside diameter | 486 mm | 19.1339 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 531,000,000 mm⁴ | 1,275.733 in⁴ |
| Elastic modulus, Sₓ | 2,090,000 mm³ | 127.5396 in³ |
| Plastic modulus, Zₓ | 2,720,000 mm³ | 165.9846 in³ |
| Radius of gyration, rₓ | 176 mm | 6.9291 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 | 531,000,000 mm⁴ | 1,275.733 in⁴ |
| Elastic modulus, S_y | 2,090,000 mm³ | 127.5396 in³ |
| Plastic modulus, Z_y | 2,720,000 mm³ | 165.9846 in³ |
| Radius of gyration, r_y | 176 mm | 6.9291 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1.06000e+9 mm⁴ | 2,546.66 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 135 kg/m | 90.7158 lb/ft |