CVD Diamond vs. Alpha Quartz
CVD diamond belongs to the non-oxide engineering ceramics classification, while alpha quartz belongs to the non-glass optical ceramics. There are 11 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is CVD diamond and the bottom bar is alpha quartz.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 1050 | |
| 91 |
| Poisson's Ratio | 0.1 | |
| 0.13 |
Thermal Properties
| Specific Heat Capacity, J/kg-K | 500 | |
| 720 |
| Thermal Conductivity, W/m-K | 1900 | |
| 8.5 |
| Thermal Expansion, µm/m-K | 1.0 | |
| 9.5 |
Otherwise Unclassified Properties
| Density, g/cm3 | 3.5 | |
| 2.7 |
| Light Transmission Range, µm | 0.22 to 100 | |
| 0.13 to 3.4 |
| Refractive Index | 2.4 | |
| 1.6 |
Common Calculations
| Stiffness to Weight: Axial, points | 170 | |
| 19 |
| Stiffness to Weight: Bending, points | 96 | |
| 57 |
| Thermal Diffusivity, mm2/s | 1080 | |
| 4.4 |