SHS 180×180×6.3
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 | 180 mm | 7.0866 in |
| Width | 180 mm | 7.0866 in |
| Thickness, t | 6.3 mm | 0.248031 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 21,700,000 mm⁴ | 52.1345 in⁴ |
| Elastic modulus, Sₓ | 241,000 mm³ | 14.7067 in³ |
| Plastic modulus, Zₓ | 281,000 mm³ | 17.1477 in³ |
| Radius of gyration, rₓ | 70.7 mm | 2.7835 in |
| Distance to top fibre | 90 mm | 3.5433 in |
| Distance to bottom fibre | 90 mm | 3.5433 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 21,700,000 mm⁴ | 52.1345 in⁴ |
| Elastic modulus, S_y | 241,000 mm³ | 14.7067 in³ |
| Plastic modulus, Z_y | 281,000 mm³ | 17.1477 in³ |
| Radius of gyration, r_y | 70.7 mm | 2.7835 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 33,600,000 mm⁴ | 80.7243 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 34 kg/m | 22.8469 lb/ft |