Grade A Lava vs. Zirconia
Both grade A lava and zirconia 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 grade A lava and the bottom bar is zirconia.
Metric UnitsUS Customary Units
Mechanical Properties
Compressive (Crushing) Strength, MPa | 76 to 170 | |
1260 to 3080 |
Flexural Strength, MPa | 28 to 69 | |
630 to 970 |
Tensile Strength: Ultimate (UTS), MPa | 6.9 to 21 | |
410 to 450 |
Thermal Properties
Maximum Temperature: Mechanical, °C | 650 to 1130 | |
500 to 1330 |
Specific Heat Capacity, J/kg-K | 840 | |
400 to 510 |
Thermal Conductivity, W/m-K | 2.0 | |
2.2 to 4.3 |
Thermal Expansion, µm/m-K | 2.5 to 3.3 | |
8.8 to 9.5 |
Electrical Properties
Dielectric Constant (Relative Permittivity) At 1 MHz | 5.3 to 5.8 | |
28 |
Dielectric Strength (Breakdown Potential), kV/mm | 3.2 to 3.9 | |
7.7 to 9.0 |
Otherwise Unclassified Properties
Density, g/cm3 | 2.3 to 2.5 | |
5.7 to 6.0 |
Common Calculations
Strength to Weight: Axial, points | 0.77 to 2.5 | |
19 to 22 |
Strength to Weight: Bending, points | 3.2 to 7.3 | |
21 to 23 |
Thermal Diffusivity, mm2/s | 1.0 | |
0.73 to 1.8 |