SHS 70×70×6.3
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 | 70 mm | 2.7559 in |
| Width | 70 mm | 2.7559 in |
| Thickness, t | 6.3 mm | 0.248031 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 1,040,000 mm⁴ | 2.4986 in⁴ |
| Elastic modulus, Sₓ | 29,700 mm³ | 1.8124 in³ |
| Plastic modulus, Zₓ | 36,900 mm³ | 2.2518 in³ |
| Radius of gyration, rₓ | 25.8 mm | 1.0157 in |
| Distance to top fibre | 35 mm | 1.378 in |
| Distance to bottom fibre | 35 mm | 1.378 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 1,040,000 mm⁴ | 2.4986 in⁴ |
| Elastic modulus, S_y | 29,700 mm³ | 1.8124 in³ |
| Plastic modulus, Z_y | 36,900 mm³ | 2.2518 in³ |
| Radius of gyration, r_y | 25.8 mm | 1.0157 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1,690,000 mm⁴ | 4.0602 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 12.3 kg/m | 8.2652 lb/ft |