CVD Diamond vs. Zirconia
CVD diamond belongs to the non-oxide engineering ceramics classification, while zirconia belongs to the oxide-based engineering ceramics. There are 16 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is CVD diamond and the bottom bar is zirconia.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 1050 | |
| 190 to 200 |
| Fracture Toughness, MPa-m1/2 | 5.5 | |
| 8.0 to 11 |
| Poisson's Ratio | 0.1 | |
| 0.25 to 0.29 |
| Tensile Strength: Ultimate (UTS), MPa | 750 | |
| 410 to 450 |
Thermal Properties
| Specific Heat Capacity, J/kg-K | 500 | |
| 400 to 510 |
| Thermal Conductivity, W/m-K | 1900 | |
| 2.2 to 4.3 |
| Thermal Expansion, µm/m-K | 1.0 | |
| 8.8 to 9.5 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 5.7 | |
| 28 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 13 | |
| 4.5 to 11 |
Otherwise Unclassified Properties
| Density, g/cm3 | 3.5 | |
| 5.7 to 6.0 |
Common Calculations
| Stiffness to Weight: Axial, points | 170 | |
| 19 |
| Stiffness to Weight: Bending, points | 96 | |
| 33 to 34 |
| Strength to Weight: Axial, points | 59 | |
| 19 to 22 |
| Strength to Weight: Bending, points | 52 | |
| 21 to 23 |
| Thermal Diffusivity, mm2/s | 1080 | |
| 0.73 to 1.8 |
| Thermal Shock Resistance, points | 51 | |
| 15 to 19 |