Cordierite vs. Aluminum Nitride
Cordierite belongs to the oxide-based engineering ceramics classification, while aluminum nitride belongs to the non-oxide engineering ceramics. There are 16 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is cordierite and the bottom bar is aluminum nitride.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 420 | |
| 2100 |
| Elastic (Young's, Tensile) Modulus, GPa | 62 | |
| 330 |
| Flexural Strength, MPa | 17 to 32 | |
| 190 to 400 |
| Fracture Toughness, MPa-m1/2 | 2.0 | |
| 2.9 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 1150 | |
| 1380 |
| Maximum Thermal Shock, °C | 290 to 390 | |
| 220 |
| Specific Heat Capacity, J/kg-K | 800 to 850 | |
| 780 |
| Thermal Conductivity, W/m-K | 1.3 to 1.7 | |
| 80 to 190 |
| Thermal Expansion, µm/m-K | 2.9 to 4.8 | |
| 4.2 to 5.4 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 4.7 | |
| 6.9 to 28 |
| Dielectric Strength (Breakdown Potential), kV/mm | 7.7 | |
| 15 to 56 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 9.5 | |
| 10 to 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.0 to 2.2 | |
| 2.9 to 3.3 |
Common Calculations
| Stiffness to Weight: Axial, points | 15 to 17 | |
| 55 to 63 |
| Stiffness to Weight: Bending, points | 59 to 67 | |
| 69 to 80 |
| Thermal Diffusivity, mm2/s | 0.74 to 1.0 | |
| 31 to 74 |