HE 280 M
HE wide flange 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 |
|---|---|---|
| Depth, d | 310 mm | 12.2047 in |
| Flange width, b_f | 288 mm | 11.3386 in |
| Web thickness, t_w | 18.5 mm | 0.728346 in |
| Flange thickness, t_f | 33 mm | 1.2992 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 396,000,000 mm⁴ | 951.3938 in⁴ |
| Elastic modulus, Sₓ | 2,550,000 mm³ | 155.6105 in³ |
| Plastic modulus, Zₓ | 2,970,000 mm³ | 181.2405 in³ |
| Radius of gyration, rₓ | 128 mm | 5.0394 in |
| Distance to top fibre | 155 mm | 6.1024 in |
| Distance to bottom fibre | 155 mm | 6.1024 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 132,000,000 mm⁴ | 317.1313 in⁴ |
| Elastic modulus, S_y | 914,000 mm³ | 55.7757 in³ |
| Plastic modulus, Z_y | 1,400,000 mm³ | 85.4332 in³ |
| Radius of gyration, r_y | 74 mm | 2.9134 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 8,070,000 mm⁴ | 19.3883 in⁴ |
| Warping constant, C_w | 2.52000e+12 mm⁶ | 9,384.221 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 189 kg/m | 127.0021 lb/ft |