CHS 88.9×5.6
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 | 5.6 mm | 0.220472 in |
| Outside diameter | 88.9 mm | 3.5 in |
| Inside diameter | 77.7 mm | 3.0591 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 1,280,000 mm⁴ | 3.0752 in⁴ |
| Elastic modulus, Sₓ | 28,700 mm³ | 1.7514 in³ |
| Plastic modulus, Zₓ | 38,900 mm³ | 2.3738 in³ |
| Radius of gyration, rₓ | 29.5 mm | 1.1614 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 | 1,280,000 mm⁴ | 3.0752 in⁴ |
| Elastic modulus, S_y | 28,700 mm³ | 1.7514 in³ |
| Plastic modulus, Z_y | 38,900 mm³ | 2.3738 in³ |
| Radius of gyration, r_y | 29.5 mm | 1.1614 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 2,550,000 mm⁴ | 6.1264 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 11.5 kg/m | 7.7276 lb/ft |