SHS 300×300×6.3
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 | 300 mm | 11.811 in |
| Width | 300 mm | 11.811 in |
| Thickness, t | 6.3 mm | 0.248031 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 105,000,000 mm⁴ | 252.2635 in⁴ |
| Elastic modulus, Sₓ | 703,000 mm³ | 42.8997 in³ |
| Plastic modulus, Zₓ | 809,000 mm³ | 49.3682 in³ |
| Radius of gyration, rₓ | 120 mm | 4.7244 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 | 105,000,000 mm⁴ | 252.2635 in⁴ |
| Elastic modulus, S_y | 703,000 mm³ | 42.8997 in³ |
| Plastic modulus, Z_y | 809,000 mm³ | 49.3682 in³ |
| Radius of gyration, r_y | 120 mm | 4.7244 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 161,000,000 mm⁴ | 386.804 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 57.8 kg/m | 38.8398 lb/ft |