HE 340 AA
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 | 320 mm | 12.5984 in |
| Flange width, b_f | 300 mm | 11.811 in |
| Web thickness, t_w | 8.5 mm | 0.334646 in |
| Flange thickness, t_f | 11.5 mm | 0.452756 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 196,000,000 mm⁴ | 470.8919 in⁴ |
| Elastic modulus, Sₓ | 1,220,000 mm³ | 74.449 in³ |
| Plastic modulus, Zₓ | 1,340,000 mm³ | 81.7718 in³ |
| Radius of gyration, rₓ | 140 mm | 5.5118 in |
| Distance to top fibre | 160 mm | 6.2992 in |
| Distance to bottom fibre | 160 mm | 6.2992 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 51,800,000 mm⁴ | 124.45 in⁴ |
| Elastic modulus, S_y | 346,000 mm³ | 21.1142 in³ |
| Plastic modulus, Z_y | 529,000 mm³ | 32.2816 in³ |
| Radius of gyration, r_y | 71.8 mm | 2.8268 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 600,000 mm⁴ | 1.4415 in⁴ |
| Warping constant, C_w | 1.23000e+12 mm⁶ | 4,580.394 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 78.9 kg/m | 53.0184 lb/ft |