IPE 550 vs HEB 550
- IPE 550 is 47 % lighter than HEB 550 (105.5 vs 199.4 kg/m).
- HEB 550 has 2.0× higher strong-axis stiffness Iy.
- HEB 550 has 4.9× higher weak-axis stiffness Iz, which governs columns and lateral stability.
- HEB 550 has 101 % higher plastic bending resistance (Wpl,y).
- Per kilogram of steel, HEB 550 is the more efficient bending section (Iy/G: 686 vs 636 cm⁴ per kg/m).
| Property | IPE 550 | HEB 550 |
|---|---|---|
| Height h [mm] | 550 | 550 |
| Flange width b [mm] | 210 | 300 |
| Web thickness tw [mm] | 11.1 | 15.0 |
| Flange thickness tf [mm] | 17.2 | 29.0 |
| Area A [cm²] | 134.4 | 254.1 |
| Mass G [kg/m] | 105.5 | 199.4 |
| Moment of inertia Iy [cm⁴] | 67 120 | 136 700 |
| Elastic modulus Wel,y [cm³] | 2 441 | 4 971 |
| Plastic modulus Wpl,y [cm³] | 2 787 | 5 591 |
| Moment of inertia Iz [cm⁴] | 2 668 | 13 080 |
| Radius of gyration iy [mm] | 223.5 | 232.0 |
| Radius of gyration iz [mm] | 44.5 | 71.7 |
| Torsion constant It [cm⁴] | 121.7 | 612.3 |
| Warping constant Iw [×10³ cm⁶] | 1 861.5 | 8 743.9 |
Highlighted value = the favourable one (higher stiffness/modulus, lower mass). Full property sets on the profile pages.