HE 280 AA
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 | 264 mm | 10.3937 in |
| Flange width, b_f | 280 mm | 11.0236 in |
| Web thickness, t_w | 7 mm | 0.275591 in |
| Flange thickness, t_f | 10 mm | 0.393701 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 106,000,000 mm⁴ | 254.666 in⁴ |
| Elastic modulus, Sₓ | 800,000 mm³ | 48.819 in³ |
| Plastic modulus, Zₓ | 873,000 mm³ | 53.2737 in³ |
| Radius of gyration, rₓ | 116 mm | 4.5669 in |
| Distance to top fibre | 132 mm | 5.1969 in |
| Distance to bottom fibre | 132 mm | 5.1969 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 36,600,000 mm⁴ | 87.9319 in⁴ |
| Elastic modulus, S_y | 262,000 mm³ | 15.9882 in³ |
| Plastic modulus, Z_y | 399,000 mm³ | 24.3485 in³ |
| Radius of gyration, r_y | 68.5 mm | 2.6969 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 355,000 mm⁴ | 0.852891 in⁴ |
| Warping constant, C_w | 5.90000e+11 mm⁶ | 2,197.099 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 61.2 kg/m | 41.1245 lb/ft |