SHS 400×400×10
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 | 400 mm | 15.748 in |
| Width | 400 mm | 15.748 in |
| Thickness, t | 10 mm | 0.393701 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 391,000,000 mm⁴ | 939.3813 in⁴ |
| Elastic modulus, Sₓ | 1,960,000 mm³ | 119.6065 in³ |
| Plastic modulus, Zₓ | 2,260,000 mm³ | 137.9137 in³ |
| Radius of gyration, rₓ | 159 mm | 6.2598 in |
| Distance to top fibre | 200 mm | 7.874 in |
| Distance to bottom fibre | 200 mm | 7.874 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 391,000,000 mm⁴ | 939.3813 in⁴ |
| Elastic modulus, S_y | 1,960,000 mm³ | 119.6065 in³ |
| Plastic modulus, Z_y | 2,260,000 mm³ | 137.9137 in³ |
| Radius of gyration, r_y | 159 mm | 6.2598 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 601,000,000 mm⁴ | 1,443.908 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 122 kg/m | 81.9802 lb/ft |