HEA 400 vs HEB 400
- HEA 400 is 20 % lighter than HEB 400 (124.8 vs 155.3 kg/m).
- HEB 400 has 28 % higher strong-axis stiffness Iy.
- HEB 400 has 26 % higher weak-axis stiffness Iz, which governs columns and lateral stability.
- HEB 400 has 26 % higher plastic bending resistance (Wpl,y).
- Per kilogram of steel, both are similarly efficient in bending (Iy/G ≈ 366 cm⁴ per kg/m).
| Property | HEA 400 | HEB 400 |
|---|---|---|
| Height h [mm] | 390 | 400 |
| Flange width b [mm] | 300 | 300 |
| Web thickness tw [mm] | 11.0 | 13.5 |
| Flange thickness tf [mm] | 19.0 | 24.0 |
| Area A [cm²] | 159.0 | 197.8 |
| Mass G [kg/m] | 124.8 | 155.3 |
| Moment of inertia Iy [cm⁴] | 45 070 | 57 680 |
| Elastic modulus Wel,y [cm³] | 2 311 | 2 884 |
| Plastic modulus Wpl,y [cm³] | 2 562 | 3 232 |
| Moment of inertia Iz [cm⁴] | 8 564 | 10 820 |
| Radius of gyration iy [mm] | 168.4 | 170.8 |
| Radius of gyration iz [mm] | 73.4 | 74.0 |
| Torsion constant It [cm⁴] | 191.4 | 361.1 |
| Warping constant Iw [×10³ cm⁶] | 2 893.6 | 3 751.1 |
Highlighted value = the favourable one (higher stiffness/modulus, lower mass). Full property sets on the profile pages.