HE 340 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 | 377 mm | 14.8425 in |
| Flange width, b_f | 309 mm | 12.1654 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 | 764,000,000 mm⁴ | 1,835.517 in⁴ |
| Elastic modulus, Sₓ | 4,050,000 mm³ | 247.1462 in³ |
| Plastic modulus, Zₓ | 4,720,000 mm³ | 288.0321 in³ |
| Radius of gyration, rₓ | 156 mm | 6.1417 in |
| Distance to top fibre | 188.5 mm | 7.4213 in |
| Distance to bottom fibre | 188.5 mm | 7.4213 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 197,000,000 mm⁴ | 473.2944 in⁴ |
| Elastic modulus, S_y | 1,280,000 mm³ | 78.1104 in³ |
| Plastic modulus, Z_y | 1,950,000 mm³ | 118.9963 in³ |
| Radius of gyration, r_y | 79 mm | 3.1102 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 15,100,000 mm⁴ | 36.2779 in⁴ |
| Warping constant, C_w | 5.58000e+12 mm⁶ | 20,779.347 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 248 kg/m | 166.6483 lb/ft |