IPE 180 vs IPN 180
- IPE 180 is 14 % lighter than IPN 180 (18.8 vs 21.9 kg/m).
- IPN 180 has 10 % higher strong-axis stiffness Iy.
- IPE 180 has 24 % higher weak-axis stiffness Iz, which governs columns and lateral stability.
- IPN 180 has 12 % higher plastic bending resistance (Wpl,y).
- Per kilogram of steel, IPE 180 is the more efficient bending section (Iy/G: 70 vs 66 cm⁴ per kg/m).
| Property | IPE 180 | IPN 180 |
|---|---|---|
| Height h [mm] | 180 | 180 |
| Flange width b [mm] | 91 | 82 |
| Web thickness tw [mm] | 5.3 | 6.9 |
| Flange thickness tf [mm] | 8.0 | 10.4 |
| Area A [cm²] | 23.9 | 27.9 |
| Mass G [kg/m] | 18.8 | 21.9 |
| Moment of inertia Iy [cm⁴] | 1 317 | 1 450 |
| Elastic modulus Wel,y [cm³] | 146 | 161 |
| Plastic modulus Wpl,y [cm³] | 166 | 187 |
| Moment of inertia Iz [cm⁴] | 101 | 81 |
| Radius of gyration iy [mm] | 74.2 | 72.0 |
| Radius of gyration iz [mm] | 20.5 | 17.1 |
| Torsion constant It [cm⁴] | 4.7 | 9.6 |
| Warping constant Iw [×10³ cm⁶] | 7.3 | 5.9 |
Highlighted value = the favourable one (higher stiffness/modulus, lower mass). Full property sets on the profile pages.