IPE 550 vs IPN 550
- IPE 550 is 36 % lighter than IPN 550 (105.5 vs 166.0 kg/m).
- IPN 550 has 48 % higher strong-axis stiffness Iy.
- IPN 550 has 31 % higher weak-axis stiffness Iz, which governs columns and lateral stability.
- IPN 550 has 52 % higher plastic bending resistance (Wpl,y).
- Per kilogram of steel, IPE 550 is the more efficient bending section (Iy/G: 636 vs 597 cm⁴ per kg/m).
| Property | IPE 550 | IPN 550 |
|---|---|---|
| Height h [mm] | 550 | 550 |
| Flange width b [mm] | 210 | 200 |
| Web thickness tw [mm] | 11.1 | 19.0 |
| Flange thickness tf [mm] | 17.2 | 30.0 |
| Area A [cm²] | 134.4 | 212.0 |
| Mass G [kg/m] | 105.5 | 166.0 |
| Moment of inertia Iy [cm⁴] | 67 120 | 99 180 |
| Elastic modulus Wel,y [cm³] | 2 441 | 3 610 |
| Plastic modulus Wpl,y [cm³] | 2 787 | 4 240 |
| Moment of inertia Iz [cm⁴] | 2 668 | 3 490 |
| Radius of gyration iy [mm] | 223.5 | 216.0 |
| Radius of gyration iz [mm] | 44.5 | 40.2 |
| Torsion constant It [cm⁴] | 121.7 | 544.0 |
| Warping constant Iw [×10³ cm⁶] | 1 861.5 | 2 390.0 |
Highlighted value = the favourable one (higher stiffness/modulus, lower mass). Full property sets on the profile pages.