Alpha Quartz vs. Steatite
Alpha quartz belongs to the non-glass optical ceramics classification, while steatite belongs to the oxide-based engineering ceramics. There are 9 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.
For each property being compared, the top bar is alpha quartz and the bottom bar is steatite.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 2.7 | |
| 1.9 to 2.8 |
| Elastic (Young's, Tensile) Modulus, GPa | 91 | |
| 68 to 120 |
| Poisson's Ratio | 0.13 | |
| 0.23 |
| Specific Heat Capacity, J/kg-K | 720 | |
| 850 to 860 |
| Stiffness to Weight: Axial, points | 19 | |
| 14 to 32 |
| Stiffness to Weight: Bending, points | 57 | |
| 52 to 83 |
| Thermal Conductivity, W/m-K | 8.5 | |
| 1.8 to 2.5 |
| Thermal Diffusivity, mm2/s | 4.4 | |
| 0.79 to 1.1 |
| Thermal Expansion, µm/m-K | 9.5 | |
| 7.0 to 9.0 |