SHS 250×250×12.5
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 | 250 mm | 9.8425 in |
| Width | 250 mm | 9.8425 in |
| Thickness, t | 12.5 mm | 0.492126 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 109,000,000 mm⁴ | 261.8735 in⁴ |
| Elastic modulus, Sₓ | 873,000 mm³ | 53.2737 in³ |
| Plastic modulus, Zₓ | 1,040,000 mm³ | 63.4647 in³ |
| Radius of gyration, rₓ | 96.6 mm | 3.8032 in |
| Distance to top fibre | 125 mm | 4.9213 in |
| Distance to bottom fibre | 125 mm | 4.9213 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 109,000,000 mm⁴ | 261.8735 in⁴ |
| Elastic modulus, S_y | 873,000 mm³ | 53.2737 in³ |
| Plastic modulus, Z_y | 1,040,000 mm³ | 63.4647 in³ |
| Radius of gyration, r_y | 96.6 mm | 3.8032 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 172,000,000 mm⁴ | 413.2317 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 91.9 kg/m | 61.7539 lb/ft |