IPE 180 vs HEA 180
- IPE 180 is 47 % lighter than HEA 180 (18.8 vs 35.5 kg/m).
- HEA 180 has 91 % higher strong-axis stiffness Iy.
- HEA 180 has 9.2× higher weak-axis stiffness Iz, which governs columns and lateral stability.
- HEA 180 has 95 % higher plastic bending resistance (Wpl,y).
- Per kilogram of steel, both are similarly efficient in bending (Iy/G ≈ 70 cm⁴ per kg/m).
| Property | IPE 180 | HEA 180 |
|---|---|---|
| Height h [mm] | 180 | 171 |
| Flange width b [mm] | 91 | 180 |
| Web thickness tw [mm] | 5.3 | 6.0 |
| Flange thickness tf [mm] | 8.0 | 9.5 |
| Area A [cm²] | 23.9 | 45.3 |
| Mass G [kg/m] | 18.8 | 35.5 |
| Moment of inertia Iy [cm⁴] | 1 317 | 2 510 |
| Elastic modulus Wel,y [cm³] | 146 | 294 |
| Plastic modulus Wpl,y [cm³] | 166 | 325 |
| Moment of inertia Iz [cm⁴] | 101 | 925 |
| Radius of gyration iy [mm] | 74.2 | 74.5 |
| Radius of gyration iz [mm] | 20.5 | 45.2 |
| Torsion constant It [cm⁴] | 4.7 | 14.7 |
| Warping constant Iw [×10³ cm⁶] | 7.3 | 59.0 |
Highlighted value = the favourable one (higher stiffness/modulus, lower mass). Full property sets on the profile pages.