CHS 101.6×4
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 | 4 mm | 0.15748 in |
| Outside diameter | 101.6 mm | 4 in |
| Inside diameter | 93.6 mm | 3.685 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 1,460,000 mm⁴ | 3.5077 in⁴ |
| Elastic modulus, Sₓ | 28,800 mm³ | 1.7575 in³ |
| Plastic modulus, Zₓ | 38,100 mm³ | 2.325 in³ |
| Radius of gyration, rₓ | 34.5 mm | 1.3583 in |
| Distance to top fibre | 50.8 mm | 2 in |
| Distance to bottom fibre | 50.8 mm | 2 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 1,460,000 mm⁴ | 3.5077 in⁴ |
| Elastic modulus, S_y | 28,800 mm³ | 1.7575 in³ |
| Plastic modulus, Z_y | 38,100 mm³ | 2.325 in³ |
| Radius of gyration, r_y | 34.5 mm | 1.3583 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 2,930,000 mm⁴ | 7.0394 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 9.63 kg/m | 6.4711 lb/ft |