HE 340 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 | 340 mm | 13.3858 in |
| Flange width, b_f | 300 mm | 11.811 in |
| Web thickness, t_w | 12 mm | 0.472441 in |
| Flange thickness, t_f | 21.5 mm | 0.846457 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 367,000,000 mm⁴ | 881.721 in⁴ |
| Elastic modulus, Sₓ | 2,160,000 mm³ | 131.8113 in³ |
| Plastic modulus, Zₓ | 2,410,000 mm³ | 147.0672 in³ |
| Radius of gyration, rₓ | 147 mm | 5.7874 in |
| Distance to top fibre | 170 mm | 6.6929 in |
| Distance to bottom fibre | 170 mm | 6.6929 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 96,900,000 mm⁴ | 232.8032 in⁴ |
| Elastic modulus, S_y | 646,000 mm³ | 39.4213 in³ |
| Plastic modulus, Z_y | 986,000 mm³ | 60.1694 in³ |
| Radius of gyration, r_y | 75.3 mm | 2.9646 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 2,630,000 mm⁴ | 6.3186 in⁴ |
| Warping constant, C_w | 2.45000e+12 mm⁶ | 9,123.548 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 134 kg/m | 90.0438 lb/ft |