Grade A Lava vs. Steatite
Both grade A lava and steatite are oxide-based engineering ceramics. There are 13 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is grade A lava and the bottom bar is steatite.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 76 to 170 | |
| 540 to 620 |
| Flexural Strength, MPa | 28 to 69 | |
| 32 to 150 |
| Tensile Strength: Ultimate (UTS), MPa | 6.9 to 21 | |
| 60 to 220 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 650 to 1130 | |
| 750 to 1230 |
| Specific Heat Capacity, J/kg-K | 840 | |
| 850 to 860 |
| Thermal Conductivity, W/m-K | 2.0 | |
| 1.8 to 2.5 |
| Thermal Expansion, µm/m-K | 2.5 to 3.3 | |
| 7.0 to 9.0 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 5.3 to 5.8 | |
| 5.7 to 6.5 |
| Dielectric Strength (Breakdown Potential), kV/mm | 3.2 to 3.9 | |
| 7.9 to 16 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.3 to 2.5 | |
| 1.9 to 2.8 |
Common Calculations
| Strength to Weight: Axial, points | 0.77 to 2.5 | |
| 6.4 to 32 |
| Strength to Weight: Bending, points | 3.2 to 7.3 | |
| 13 to 42 |
| Thermal Diffusivity, mm2/s | 1.0 | |
| 0.79 to 1.1 |