IPE 400 vs HEA 400
- IPE 400 is 47 % lighter than HEA 400 (66.3 vs 124.8 kg/m).
- HEA 400 has 95 % higher strong-axis stiffness Iy.
- HEA 400 has 6.5× higher weak-axis stiffness Iz, which governs columns and lateral stability.
- HEA 400 has 96 % higher plastic bending resistance (Wpl,y).
- Per kilogram of steel, HEA 400 is the more efficient bending section (Iy/G: 361 vs 349 cm⁴ per kg/m).
| Property | IPE 400 | HEA 400 |
|---|---|---|
| Height h [mm] | 400 | 390 |
| Flange width b [mm] | 180 | 300 |
| Web thickness tw [mm] | 8.6 | 11.0 |
| Flange thickness tf [mm] | 13.5 | 19.0 |
| Area A [cm²] | 84.5 | 159.0 |
| Mass G [kg/m] | 66.3 | 124.8 |
| Moment of inertia Iy [cm⁴] | 23 130 | 45 070 |
| Elastic modulus Wel,y [cm³] | 1 156 | 2 311 |
| Plastic modulus Wpl,y [cm³] | 1 307 | 2 562 |
| Moment of inertia Iz [cm⁴] | 1 318 | 8 564 |
| Radius of gyration iy [mm] | 165.5 | 168.4 |
| Radius of gyration iz [mm] | 39.5 | 73.4 |
| Torsion constant It [cm⁴] | 50.4 | 191.4 |
| Warping constant Iw [×10³ cm⁶] | 482.9 | 2 893.6 |
Highlighted value = the favourable one (higher stiffness/modulus, lower mass). Full property sets on the profile pages.