CHS 139.7×5
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 | 5 mm | 0.19685 in |
| Outside diameter | 139.7 mm | 5.5 in |
| Inside diameter | 129.7 mm | 5.1063 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 4,810,000 mm⁴ | 11.5561 in⁴ |
| Elastic modulus, Sₓ | 68,800 mm³ | 4.1984 in³ |
| Plastic modulus, Zₓ | 90,800 mm³ | 5.541 in³ |
| Radius of gyration, rₓ | 47.7 mm | 1.878 in |
| Distance to top fibre | 69.85 mm | 2.75 in |
| Distance to bottom fibre | 69.85 mm | 2.75 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 4,810,000 mm⁴ | 11.5561 in⁴ |
| Elastic modulus, S_y | 68,800 mm³ | 4.1984 in³ |
| Plastic modulus, Z_y | 90,800 mm³ | 5.541 in³ |
| Radius of gyration, r_y | 47.7 mm | 1.878 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 9,610,000 mm⁴ | 23.0881 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 16.6 kg/m | 11.1547 lb/ft |