UPN 80 vs UPE 80
- UPE 80 is 8 % lighter than UPN 80 (7.9 vs 8.6 kg/m).
- UPE 80 has 1 % higher strong-axis stiffness Iy.
- UPE 80 has 31 % higher weak-axis stiffness Iz, which governs columns and lateral stability.
- UPN 80 has 4 % higher plastic bending resistance (Wpl,y).
- Per kilogram of steel, UPE 80 is the more efficient bending section (Iy/G: 14 vs 12 cm⁴ per kg/m).
| Property | UPN 80 | UPE 80 |
|---|---|---|
| Height h [mm] | 80 | 80 |
| Flange width b [mm] | 45 | 50 |
| Web thickness tw [mm] | 6.0 | 4.0 |
| Flange thickness tf [mm] | 8.0 | 7.0 |
| Area A [cm²] | 11.0 | 10.1 |
| Mass G [kg/m] | 8.6 | 7.9 |
| Moment of inertia Iy [cm⁴] | 106 | 107 |
| Elastic modulus Wel,y [cm³] | 27 | 27 |
| Plastic modulus Wpl,y [cm³] | 32 | 31 |
| Moment of inertia Iz [cm⁴] | 19 | 26 |
| Radius of gyration iy [mm] | 31.0 | 32.6 |
| Radius of gyration iz [mm] | 13.3 | 15.9 |
| Torsion constant It [cm⁴] | 2.2 | 1.5 |
| Warping constant Iw [×10³ cm⁶] | 0.2 | 0.2 |
Highlighted value = the favourable one (higher stiffness/modulus, lower mass). Full property sets on the profile pages.