CHS 88.9×5
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 | 88.9 mm | 3.5 in |
| Inside diameter | 78.9 mm | 3.1063 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 1,160,000 mm⁴ | 2.7869 in⁴ |
| Elastic modulus, Sₓ | 26,200 mm³ | 1.5988 in³ |
| Plastic modulus, Zₓ | 35,200 mm³ | 2.148 in³ |
| Radius of gyration, rₓ | 29.7 mm | 1.1693 in |
| Distance to top fibre | 44.45 mm | 1.75 in |
| Distance to bottom fibre | 44.45 mm | 1.75 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 1,160,000 mm⁴ | 2.7869 in⁴ |
| Elastic modulus, S_y | 26,200 mm³ | 1.5988 in³ |
| Plastic modulus, Z_y | 35,200 mm³ | 2.148 in³ |
| Radius of gyration, r_y | 29.7 mm | 1.1693 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 2,330,000 mm⁴ | 5.5978 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 10.3 kg/m | 6.9213 lb/ft |