Steatite vs. Alpha Quartz
Steatite belongs to the oxide-based engineering ceramics classification, while alpha quartz belongs to the non-glass optical 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 steatite and the bottom bar is alpha quartz.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 1.9 to 2.8 | |
| 2.7 |
| Elastic (Young's, Tensile) Modulus, GPa | 68 to 120 | |
| 91 |
| Poisson's Ratio | 0.23 | |
| 0.13 |
| Specific Heat Capacity, J/kg-K | 850 to 860 | |
| 720 |
| Stiffness to Weight: Axial, points | 14 to 32 | |
| 19 |
| Stiffness to Weight: Bending, points | 52 to 83 | |
| 57 |
| Thermal Conductivity, W/m-K | 1.8 to 2.5 | |
| 8.5 |
| Thermal Diffusivity, mm2/s | 0.79 to 1.1 | |
| 4.4 |
| Thermal Expansion, µm/m-K | 7.0 to 9.0 | |
| 9.5 |