HE 280 B
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 | 280 mm | 11.0236 in |
| Flange width, b_f | 280 mm | 11.0236 in |
| Web thickness, t_w | 10.5 mm | 0.413386 in |
| Flange thickness, t_f | 18 mm | 0.708661 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 193,000,000 mm⁴ | 463.6844 in⁴ |
| Elastic modulus, Sₓ | 1,380,000 mm³ | 84.2128 in³ |
| Plastic modulus, Zₓ | 1,530,000 mm³ | 93.3663 in³ |
| Radius of gyration, rₓ | 121 mm | 4.7638 in |
| Distance to top fibre | 140 mm | 5.5118 in |
| Distance to bottom fibre | 140 mm | 5.5118 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 66,000,000 mm⁴ | 158.5656 in⁴ |
| Elastic modulus, S_y | 471,000 mm³ | 28.7422 in³ |
| Plastic modulus, Z_y | 718,000 mm³ | 43.815 in³ |
| Radius of gyration, r_y | 70.9 mm | 2.7913 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1,460,000 mm⁴ | 3.5077 in⁴ |
| Warping constant, C_w | 1.13000e+12 mm⁶ | 4,208.004 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 103 kg/m | 69.2128 lb/ft |