IPN 320
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 | 320 mm | 12.5984 in |
| Flange width, b_f | 131 mm | 5.1575 in |
| Web thickness, t_w | 11.5 mm | 0.452756 in |
| Flange thickness, t_f | 17.3 mm | 0.681102 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 125,100,000 mm⁴ | 300.554 in⁴ |
| Elastic modulus, Sₓ | 782,000 mm³ | 47.7206 in³ |
| Plastic modulus, Zₓ | 914,000 mm³ | 55.7757 in³ |
| Radius of gyration, rₓ | 127 mm | 5 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 | 5,550,000 mm⁴ | 13.3339 in⁴ |
| Elastic modulus, S_y | 84,700 mm³ | 5.1687 in³ |
| Plastic modulus, Z_y | 143,000 mm³ | 8.7264 in³ |
| Radius of gyration, r_y | 27 mm | 1.063 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 725,000 mm⁴ | 1.7418 in⁴ |
| Warping constant, C_w | 1.29000e+11 mm⁶ | 480.3828 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 61 kg/m | 40.9901 lb/ft |