UPN 50
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 | 50 mm | 1.9685 in |
| Flange width, b_f | 38 mm | 1.4961 in |
| Web thickness, t_w | 5 mm | 0.19685 in |
| Flange thickness, t_f | 7 mm | 0.275591 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 264,000 mm⁴ | 0.634263 in⁴ |
| Elastic modulus, Sₓ | 10,600 mm³ | 0.646852 in³ |
| Plastic modulus, Zₓ | 13,100 mm³ | 0.799411 in³ |
| Radius of gyration, rₓ | 19.2 mm | 0.755906 in |
| Distance to top fibre | 25 mm | 0.984252 in |
| Distance to bottom fibre | 25 mm | 0.984252 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 91,200 mm⁴ | 0.219109 in⁴ |
| Elastic modulus, S_y | 4,000 mm³ | 0.244095 in³ |
| Plastic modulus, Z_y | 6,780 mm³ | 0.413741 in³ |
| Radius of gyration, r_y | 11.3 mm | 0.444882 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 11,200 mm⁴ | 0.026908 in⁴ |
| Warping constant, C_w | 30,000,000 mm⁶ | 0.111717 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 5.6 kg/m | 3.763 lb/ft |