IPN 380
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 | 380 mm | 14.9606 in |
| Flange width, b_f | 149 mm | 5.8661 in |
| Web thickness, t_w | 13.7 mm | 0.53937 in |
| Flange thickness, t_f | 20.5 mm | 0.807087 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 240,100,000 mm⁴ | 576.8426 in⁴ |
| Elastic modulus, Sₓ | 1,260,000 mm³ | 76.8899 in³ |
| Plastic modulus, Zₓ | 1,482,000 mm³ | 90.4372 in³ |
| Radius of gyration, rₓ | 150 mm | 5.9055 in |
| Distance to top fibre | 190 mm | 7.4803 in |
| Distance to bottom fibre | 190 mm | 7.4803 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 9,750,000 mm⁴ | 23.4245 in⁴ |
| Elastic modulus, S_y | 131,000 mm³ | 7.9941 in³ |
| Plastic modulus, Z_y | 221,000 mm³ | 13.4862 in³ |
| Radius of gyration, r_y | 30 mm | 1.1811 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1,410,000 mm⁴ | 3.3875 in⁴ |
| Warping constant, C_w | 3.19000e+11 mm⁶ | 1,187.923 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 84 kg/m | 56.4454 lb/ft |