HE 340 A
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 | 330 mm | 12.9921 in |
| Flange width, b_f | 300 mm | 11.811 in |
| Web thickness, t_w | 9.5 mm | 0.374016 in |
| Flange thickness, t_f | 16.5 mm | 0.649606 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 277,000,000 mm⁴ | 665.4952 in⁴ |
| Elastic modulus, Sₓ | 1,680,000 mm³ | 102.5199 in³ |
| Plastic modulus, Zₓ | 1,850,000 mm³ | 112.8939 in³ |
| Radius of gyration, rₓ | 144 mm | 5.6693 in |
| Distance to top fibre | 165 mm | 6.4961 in |
| Distance to bottom fibre | 165 mm | 6.4961 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 74,400,000 mm⁴ | 178.7467 in⁴ |
| Elastic modulus, S_y | 496,000 mm³ | 30.2678 in³ |
| Plastic modulus, Z_y | 756,000 mm³ | 46.134 in³ |
| Radius of gyration, r_y | 74.6 mm | 2.937 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1,310,000 mm⁴ | 3.1473 in⁴ |
| Warping constant, C_w | 1.82000e+12 mm⁶ | 6,777.493 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 105 kg/m | 70.5567 lb/ft |