HE 550 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 | 572 mm | 22.5197 in |
| Flange width, b_f | 306 mm | 12.0472 in |
| Web thickness, t_w | 21 mm | 0.826772 in |
| Flange thickness, t_f | 40 mm | 1.5748 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 1.98000e+9 mm⁴ | 4,756.969 in⁴ |
| Elastic modulus, Sₓ | 6,920,000 mm³ | 422.2843 in³ |
| Plastic modulus, Zₓ | 7,930,000 mm³ | 483.9183 in³ |
| Radius of gyration, rₓ | 236 mm | 9.2913 in |
| Distance to top fibre | 286 mm | 11.2598 in |
| Distance to bottom fibre | 286 mm | 11.2598 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 192,000,000 mm⁴ | 461.2818 in⁴ |
| Elastic modulus, S_y | 1,250,000 mm³ | 76.2797 in³ |
| Plastic modulus, Z_y | 1,940,000 mm³ | 118.3861 in³ |
| Radius of gyration, r_y | 73.5 mm | 2.8937 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 15,600,000 mm⁴ | 37.4792 in⁴ |
| Warping constant, C_w | 1.35000e+13 mm⁶ | 50,272.614 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 278 kg/m | 186.8074 lb/ft |