Steatite vs. Aluminum Nitride
Steatite belongs to the oxide-based engineering ceramics classification, while aluminum nitride belongs to the non-oxide engineering ceramics. There are 18 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is steatite and the bottom bar is aluminum nitride.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 540 to 620 | |
| 2100 |
| Elastic (Young's, Tensile) Modulus, GPa | 68 to 120 | |
| 330 |
| Flexural Strength, MPa | 32 to 150 | |
| 190 to 400 |
| Poisson's Ratio | 0.23 | |
| 0.21 to 0.31 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 750 to 1230 | |
| 1380 |
| Maximum Thermal Shock, °C | 90 to 160 | |
| 220 |
| Specific Heat Capacity, J/kg-K | 850 to 860 | |
| 780 |
| Thermal Conductivity, W/m-K | 1.8 to 2.5 | |
| 80 to 190 |
| Thermal Expansion, µm/m-K | 7.0 to 9.0 | |
| 4.2 to 5.4 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 5.7 to 6.5 | |
| 6.9 to 28 |
| Dielectric Strength (Breakdown Potential), kV/mm | 7.9 to 16 | |
| 15 to 56 |
| Electrical Dissipation At 1 Hz | 0.0014 to 0.022 | |
| 0.0019 |
| Electrical Dissipation At 1 MHz | 0.0010 to 0.0060 | |
| 0.00020 to 0.0010 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 8.0 to 11 | |
| 10 to 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.9 to 2.8 | |
| 2.9 to 3.3 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 to 32 | |
| 55 to 63 |
| Stiffness to Weight: Bending, points | 52 to 83 | |
| 69 to 80 |
| Thermal Diffusivity, mm2/s | 0.79 to 1.1 | |
| 31 to 74 |