Ferrite vs. Silicon Nitride
Ferrite belongs to the oxide-based engineering ceramics classification, while silicon nitride belongs to the non-oxide engineering ceramics. There are 13 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is ferrite and the bottom bar is silicon nitride.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 430 to 2000 | |
| 600 to 2950 |
| Elastic (Young's, Tensile) Modulus, GPa | 120 to 140 | |
| 140 to 310 |
| Flexural Strength, MPa | 120 to 150 | |
| 130 to 810 |
| Fracture Toughness, MPa-m1/2 | 1.4 to 1.5 | |
| 3.1 to 6.2 |
Thermal Properties
| Specific Heat Capacity, J/kg-K | 710 to 1050 | |
| 720 to 800 |
| Thermal Conductivity, W/m-K | 3.9 to 6.3 | |
| 12 to 31 |
| Thermal Expansion, µm/m-K | 8.0 to 9.3 | |
| 2.5 to 3.2 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 12 to 270 | |
| 8.0 to 10 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 1.0 to 1.5 | |
| 11 to 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 4.7 to 4.8 | |
| 2.2 to 3.4 |
Common Calculations
| Stiffness to Weight: Axial, points | 15 to 16 | |
| 34 to 53 |
| Stiffness to Weight: Bending, points | 35 to 36 | |
| 65 to 78 |
| Thermal Diffusivity, mm2/s | 0.78 to 1.9 | |
| 7.5 to 13 |