Zirconia vs. Grade A Lava
Both zirconia and grade A lava are oxide-based engineering ceramics. There are 13 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is zirconia and the bottom bar is grade A lava.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 1260 to 3080 | |
| 76 to 170 |
| Flexural Strength, MPa | 630 to 970 | |
| 28 to 69 |
| Tensile Strength: Ultimate (UTS), MPa | 410 to 450 | |
| 6.9 to 21 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 500 to 1330 | |
| 650 to 1130 |
| Specific Heat Capacity, J/kg-K | 400 to 510 | |
| 840 |
| Thermal Conductivity, W/m-K | 2.2 to 4.3 | |
| 2.0 |
| Thermal Expansion, µm/m-K | 8.8 to 9.5 | |
| 2.5 to 3.3 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 28 | |
| 5.3 to 5.8 |
| Dielectric Strength (Breakdown Potential), kV/mm | 7.7 to 9.0 | |
| 3.2 to 3.9 |
Otherwise Unclassified Properties
| Density, g/cm3 | 5.7 to 6.0 | |
| 2.3 to 2.5 |
Common Calculations
| Strength to Weight: Axial, points | 19 to 22 | |
| 0.77 to 2.5 |
| Strength to Weight: Bending, points | 21 to 23 | |
| 3.2 to 7.3 |
| Thermal Diffusivity, mm2/s | 0.73 to 1.8 | |
| 1.0 |