HEA 450 vs HEB 450
- HEA 450 is 18 % lighter than HEB 450 (139.8 vs 171.1 kg/m).
- HEB 450 has 25 % higher strong-axis stiffness Iy.
- HEB 450 has 24 % higher weak-axis stiffness Iz, which governs columns and lateral stability.
- HEB 450 has 24 % higher plastic bending resistance (Wpl,y).
- Per kilogram of steel, both are similarly efficient in bending (Iy/G ≈ 461 cm⁴ per kg/m).
| Property | HEA 450 | HEB 450 |
|---|---|---|
| Height h [mm] | 440 | 450 |
| Flange width b [mm] | 300 | 300 |
| Web thickness tw [mm] | 11.5 | 14.0 |
| Flange thickness tf [mm] | 21.0 | 26.0 |
| Area A [cm²] | 178.0 | 218.0 |
| Mass G [kg/m] | 139.8 | 171.1 |
| Moment of inertia Iy [cm⁴] | 63 720 | 79 890 |
| Elastic modulus Wel,y [cm³] | 2 896 | 3 551 |
| Plastic modulus Wpl,y [cm³] | 3 216 | 3 982 |
| Moment of inertia Iz [cm⁴] | 9 465 | 11 720 |
| Radius of gyration iy [mm] | 189.2 | 191.4 |
| Radius of gyration iz [mm] | 72.9 | 73.3 |
| Torsion constant It [cm⁴] | 249.1 | 448.9 |
| Warping constant Iw [×10³ cm⁶] | 4 087.2 | 5 177.7 |
Highlighted value = the favourable one (higher stiffness/modulus, lower mass). Full property sets on the profile pages.