CHS 42.4×4
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 | 42.4 mm | 1.6693 in |
| Inside diameter | 34.4 mm | 1.3543 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 89,900 mm⁴ | 0.215986 in⁴ |
| Elastic modulus, Sₓ | 4,240 mm³ | 0.258741 in³ |
| Plastic modulus, Zₓ | 5,920 mm³ | 0.361261 in³ |
| Radius of gyration, rₓ | 13.6 mm | 0.535433 in |
| Distance to top fibre | 21.2 mm | 0.8346455 in |
| Distance to bottom fibre | 21.2 mm | 0.8346455 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 89,900 mm⁴ | 0.215986 in⁴ |
| Elastic modulus, S_y | 4,240 mm³ | 0.258741 in³ |
| Plastic modulus, Z_y | 5,920 mm³ | 0.361261 in³ |
| Radius of gyration, r_y | 13.6 mm | 0.535433 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 180,000 mm⁴ | 0.432452 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 3.79 kg/m | 2.5468 lb/ft |