CHS 88.9×7.1
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 | 7.1 mm | 0.279528 in |
| Outside diameter | 88.9 mm | 3.5 in |
| Inside diameter | 74.7 mm | 2.9409 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 1,540,000 mm⁴ | 3.6999 in⁴ |
| Elastic modulus, Sₓ | 34,600 mm³ | 2.1114 in³ |
| Plastic modulus, Zₓ | 47,600 mm³ | 2.9047 in³ |
| Radius of gyration, rₓ | 29 mm | 1.1417 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 | 1,540,000 mm⁴ | 3.6999 in⁴ |
| Elastic modulus, S_y | 34,600 mm³ | 2.1114 in³ |
| Plastic modulus, Z_y | 47,600 mm³ | 2.9047 in³ |
| Radius of gyration, r_y | 29 mm | 1.1417 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 3,080,000 mm⁴ | 7.3997 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 14.3 kg/m | 9.6092 lb/ft |