SHS 300×300×7.1
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 | 300 mm | 11.811 in |
| Width | 300 mm | 11.811 in |
| Thickness, t | 7.1 mm | 0.279528 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 118,000,000 mm⁴ | 283.4961 in⁴ |
| Elastic modulus, Sₓ | 785,000 mm³ | 47.9036 in³ |
| Plastic modulus, Zₓ | 906,000 mm³ | 55.2875 in³ |
| Radius of gyration, rₓ | 119 mm | 4.685 in |
| Distance to top fibre | 150 mm | 5.9055 in |
| Distance to bottom fibre | 150 mm | 5.9055 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 118,000,000 mm⁴ | 283.4961 in⁴ |
| Elastic modulus, S_y | 785,000 mm³ | 47.9036 in³ |
| Plastic modulus, Z_y | 906,000 mm³ | 55.2875 in³ |
| Radius of gyration, r_y | 119 mm | 4.685 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 181,000,000 mm⁴ | 434.8542 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 64.9 kg/m | 43.6108 lb/ft |