SHS 80×80×4
Square 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 |
|---|---|---|
| Height | 80 mm | 3.1496 in |
| Width | 80 mm | 3.1496 in |
| Thickness, t | 4 mm | 0.15748 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 1,140,000 mm⁴ | 2.7389 in⁴ |
| Elastic modulus, Sₓ | 28,600 mm³ | 1.7453 in³ |
| Plastic modulus, Zₓ | 34,000 mm³ | 2.0748 in³ |
| Radius of gyration, rₓ | 30.9 mm | 1.2165 in |
| Distance to top fibre | 40 mm | 1.5748 in |
| Distance to bottom fibre | 40 mm | 1.5748 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 1,140,000 mm⁴ | 2.7389 in⁴ |
| Elastic modulus, S_y | 28,600 mm³ | 1.7453 in³ |
| Plastic modulus, Z_y | 34,000 mm³ | 2.0748 in³ |
| Radius of gyration, r_y | 30.9 mm | 1.2165 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1,800,000 mm⁴ | 4.3245 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 9.41 kg/m | 6.3232 lb/ft |