CHS 33.7×4.5
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 | 4.5 mm | 0.177165 in |
| Outside diameter | 33.7 mm | 1.3268 in |
| Inside diameter | 24.7 mm | 0.972441 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 45,000 mm⁴ | 0.108113 in⁴ |
| Elastic modulus, Sₓ | 2,670 mm³ | 0.162933 in³ |
| Plastic modulus, Zₓ | 3,870 mm³ | 0.236162 in³ |
| Radius of gyration, rₓ | 10.4 mm | 0.409449 in |
| Distance to top fibre | 16.85 mm | 0.663386 in |
| Distance to bottom fibre | 16.85 mm | 0.663386 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 45,000 mm⁴ | 0.108113 in⁴ |
| Elastic modulus, S_y | 2,670 mm³ | 0.162933 in³ |
| Plastic modulus, Z_y | 3,870 mm³ | 0.236162 in³ |
| Radius of gyration, r_y | 10.4 mm | 0.409449 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 90,100 mm⁴ | 0.216466 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 3.24 kg/m | 2.1772 lb/ft |