HE 550 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 | 522 mm | 20.5512 in |
| Flange width, b_f | 300 mm | 11.811 in |
| Web thickness, t_w | 11.5 mm | 0.452756 in |
| Flange thickness, t_f | 15 mm | 0.590551 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 729,000,000 mm⁴ | 1,751.43 in⁴ |
| Elastic modulus, Sₓ | 2,790,000 mm³ | 170.2562 in³ |
| Plastic modulus, Zₓ | 3,130,000 mm³ | 191.0043 in³ |
| Radius of gyration, rₓ | 218 mm | 8.5827 in |
| Distance to top fibre | 261 mm | 10.2756 in |
| Distance to bottom fibre | 261 mm | 10.2756 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 67,700,000 mm⁴ | 162.6499 in⁴ |
| Elastic modulus, S_y | 451,000 mm³ | 27.5217 in³ |
| Plastic modulus, Z_y | 699,000 mm³ | 42.6556 in³ |
| Radius of gyration, r_y | 66.5 mm | 2.6181 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1,270,000 mm⁴ | 3.0512 in⁴ |
| Warping constant, C_w | 4.34000e+12 mm⁶ | 16,161.714 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 120 kg/m | 80.6363 lb/ft |