HEA 320 vs HEB 320
- HEA 320 is 23 % lighter than HEB 320 (97.6 vs 126.7 kg/m).
- HEB 320 has 34 % higher strong-axis stiffness Iy.
- HEB 320 has 32 % higher weak-axis stiffness Iz, which governs columns and lateral stability.
- HEB 320 has 32 % higher plastic bending resistance (Wpl,y).
- Per kilogram of steel, HEB 320 is the more efficient bending section (Iy/G: 243 vs 235 cm⁴ per kg/m).
| Property | HEA 320 | HEB 320 |
|---|---|---|
| Height h [mm] | 310 | 320 |
| Flange width b [mm] | 300 | 300 |
| Web thickness tw [mm] | 9.0 | 11.5 |
| Flange thickness tf [mm] | 15.5 | 20.5 |
| Area A [cm²] | 124.4 | 161.3 |
| Mass G [kg/m] | 97.6 | 126.7 |
| Moment of inertia Iy [cm⁴] | 22 930 | 30 820 |
| Elastic modulus Wel,y [cm³] | 1 479 | 1 926 |
| Plastic modulus Wpl,y [cm³] | 1 628 | 2 149 |
| Moment of inertia Iz [cm⁴] | 6 985 | 9 239 |
| Radius of gyration iy [mm] | 135.8 | 138.2 |
| Radius of gyration iz [mm] | 74.9 | 75.7 |
| Torsion constant It [cm⁴] | 108.8 | 229.2 |
| Warping constant Iw [×10³ cm⁶] | 1 482.6 | 2 026.2 |
Highlighted value = the favourable one (higher stiffness/modulus, lower mass). Full property sets on the profile pages.