HE 550 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 | 550 mm | 21.6535 in |
| Flange width, b_f | 300 mm | 11.811 in |
| Web thickness, t_w | 15 mm | 0.590551 in |
| Flange thickness, t_f | 29 mm | 1.1417 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 1.37000e+9 mm⁴ | 3,291.438 in⁴ |
| Elastic modulus, Sₓ | 4,970,000 mm³ | 303.288 in³ |
| Plastic modulus, Zₓ | 5,590,000 mm³ | 341.1227 in³ |
| Radius of gyration, rₓ | 232 mm | 9.1339 in |
| Distance to top fibre | 275 mm | 10.8268 in |
| Distance to bottom fibre | 275 mm | 10.8268 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 131,000,000 mm⁴ | 314.7288 in⁴ |
| Elastic modulus, S_y | 872,000 mm³ | 53.2127 in³ |
| Plastic modulus, Z_y | 1,340,000 mm³ | 81.7718 in³ |
| Radius of gyration, r_y | 71.7 mm | 2.8228 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 6,100,000 mm⁴ | 14.6553 in⁴ |
| Warping constant, C_w | 8.86000e+12 mm⁶ | 32,993.73 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 199 kg/m | 133.7218 lb/ft |