L 250×250×21
Angles 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 |
|---|---|---|
| Depth, d | 250 mm | 9.8425 in |
| Width | 250 mm | 9.8425 in |
| Thickness, t | 21 mm | 0.826772 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 59,300,000 mm⁴ | 142.4688 in⁴ |
| Elastic modulus, Sₓ | 329,000 mm³ | 20.0768 in³ |
| Radius of gyration, rₓ | 76.8 mm | 3.0236 in |
| Distance to top fibre | 180.2432 mm | 7.0962 in |
| Distance to bottom fibre | 69.7568 mm | 2.7463 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 59,300,000 mm⁴ | 142.4688 in⁴ |
| Elastic modulus, S_y | 329,000 mm³ | 20.0768 in³ |
| Radius of gyration, r_y | 76.8 mm | 3.0236 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1,540,000 mm⁴ | 3.6999 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 78.9 kg/m | 53.0184 lb/ft |