UPN 80
UPN taper flange channels 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 | 45 mm | 1.7717 in |
| Web thickness, t_w | 6 mm | 0.23622 in |
| Flange thickness, t_f | 8 mm | 0.314961 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 1,060,000 mm⁴ | 2.5467 in⁴ |
| Elastic modulus, Sₓ | 26,500 mm³ | 1.6171 in³ |
| Plastic modulus, Zₓ | 32,300 mm³ | 1.9711 in³ |
| Radius of gyration, rₓ | 31 mm | 1.2205 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 | 194,000 mm⁴ | 0.466087 in⁴ |
| Elastic modulus, S_y | 6,000 mm³ | 0.366142 in³ |
| Plastic modulus, Z_y | 11,900 mm³ | 0.726183 in³ |
| Radius of gyration, r_y | 13.3 mm | 0.523622 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 22,000 mm⁴ | 0.052855 in⁴ |
| Warping constant, C_w | 180,000,000 mm⁶ | 0.670302 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 8.6 kg/m | 5.7789 lb/ft |