IPN 80
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 | 80 mm | 3.1496 in |
| Flange width, b_f | 42 mm | 1.6535 in |
| Web thickness, t_w | 3.9 mm | 0.153543 in |
| Flange thickness, t_f | 5.9 mm | 0.232283 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 778,000 mm⁴ | 1.8692 in⁴ |
| Elastic modulus, Sₓ | 19,500 mm³ | 1.19 in³ |
| Plastic modulus, Zₓ | 22,800 mm³ | 1.3913 in³ |
| Radius of gyration, rₓ | 32 mm | 1.2598 in |
| Distance to top fibre | 40 mm | 1.5748 in |
| Distance to bottom fibre | 40 mm | 1.5748 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 62,900 mm⁴ | 0.151118 in⁴ |
| Elastic modulus, S_y | 3,000 mm³ | 0.183071 in³ |
| Plastic modulus, Z_y | 5,000 mm³ | 0.305119 in³ |
| Radius of gyration, r_y | 9 mm | 0.354331 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 8,700 mm⁴ | 0.020902 in⁴ |
| Warping constant, C_w | 90,000,000 mm⁶ | 0.335151 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 5.9 kg/m | 3.9646 lb/ft |