IPN 340
IPN taper flange beams 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 | 137 mm | 5.3937 in |
| Web thickness, t_w | 12.2 mm | 0.480315 in |
| Flange thickness, t_f | 18.3 mm | 0.720472 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 157,000,000 mm⁴ | 377.194 in⁴ |
| Elastic modulus, Sₓ | 923,000 mm³ | 56.3249 in³ |
| Plastic modulus, Zₓ | 1,080,000 mm³ | 65.9056 in³ |
| Radius of gyration, rₓ | 135 mm | 5.315 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 | 6,740,000 mm⁴ | 16.1929 in⁴ |
| Elastic modulus, S_y | 98,400 mm³ | 6.0047 in³ |
| Plastic modulus, Z_y | 166,000 mm³ | 10.1299 in³ |
| Radius of gyration, r_y | 28 mm | 1.1024 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 904,000 mm⁴ | 2.1719 in⁴ |
| Warping constant, C_w | 1.76000e+11 mm⁶ | 655.4059 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 68 kg/m | 45.6939 lb/ft |