HE 400 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 | 432 mm | 17.0079 in |
| Flange width, b_f | 307 mm | 12.0866 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 | 1.04000e+9 mm⁴ | 2,498.61 in⁴ |
| Elastic modulus, Sₓ | 4,820,000 mm³ | 294.1344 in³ |
| Plastic modulus, Zₓ | 5,570,000 mm³ | 339.9023 in³ |
| Radius of gyration, rₓ | 179 mm | 7.0472 in |
| Distance to top fibre | 216 mm | 8.5039 in |
| Distance to bottom fibre | 216 mm | 8.5039 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 193,000,000 mm⁴ | 463.6844 in⁴ |
| Elastic modulus, S_y | 1,260,000 mm³ | 76.8899 in³ |
| Plastic modulus, Z_y | 1,930,000 mm³ | 117.7758 in³ |
| Radius of gyration, r_y | 77 mm | 3.0315 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 15,200,000 mm⁴ | 36.5181 in⁴ |
| Warping constant, C_w | 7.41000e+12 mm⁶ | 27,594.079 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 256 kg/m | 172.0241 lb/ft |