CHS 101.6×8
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 | 8 mm | 0.314961 in |
| Outside diameter | 101.6 mm | 4 in |
| Inside diameter | 85.6 mm | 3.3701 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 2,600,000 mm⁴ | 6.2465 in⁴ |
| Elastic modulus, Sₓ | 51,100 mm³ | 3.1183 in³ |
| Plastic modulus, Zₓ | 70,300 mm³ | 4.29 in³ |
| Radius of gyration, rₓ | 33.2 mm | 1.3071 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 | 2,600,000 mm⁴ | 6.2465 in⁴ |
| Elastic modulus, S_y | 51,100 mm³ | 3.1183 in³ |
| Plastic modulus, Z_y | 70,300 mm³ | 4.29 in³ |
| Radius of gyration, r_y | 33.2 mm | 1.3071 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 5,190,000 mm⁴ | 12.469 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 18.5 kg/m | 12.4314 lb/ft |