HEA 280 vs HEB 280
- HEA 280 is 26 % lighter than HEB 280 (76.4 vs 103.1 kg/m).
- HEB 280 has 41 % higher strong-axis stiffness Iy.
- HEB 280 has 38 % higher weak-axis stiffness Iz, which governs columns and lateral stability.
- HEB 280 has 38 % higher plastic bending resistance (Wpl,y).
- Per kilogram of steel, HEB 280 is the more efficient bending section (Iy/G: 187 vs 179 cm⁴ per kg/m).
| Property | HEA 280 | HEB 280 |
|---|---|---|
| Height h [mm] | 270 | 280 |
| Flange width b [mm] | 280 | 280 |
| Web thickness tw [mm] | 8.0 | 10.5 |
| Flange thickness tf [mm] | 13.0 | 18.0 |
| Area A [cm²] | 97.3 | 131.4 |
| Mass G [kg/m] | 76.4 | 103.1 |
| Moment of inertia Iy [cm⁴] | 13 670 | 19 270 |
| Elastic modulus Wel,y [cm³] | 1 013 | 1 376 |
| Plastic modulus Wpl,y [cm³] | 1 112 | 1 534 |
| Moment of inertia Iz [cm⁴] | 4 763 | 6 595 |
| Radius of gyration iy [mm] | 118.6 | 121.1 |
| Radius of gyration iz [mm] | 70.0 | 70.9 |
| Torsion constant It [cm⁴] | 61.4 | 145.3 |
| Warping constant Iw [×10³ cm⁶] | 770.1 | 1 107.2 |
Highlighted value = the favourable one (higher stiffness/modulus, lower mass). Full property sets on the profile pages.