Silicon Carbide vs. Grade A Lava
Silicon carbide belongs to the non-oxide engineering ceramics classification, while grade A lava belongs to the oxide-based engineering ceramics. There are 11 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is silicon carbide and the bottom bar is grade A lava.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 2780 to 3900 | |
| 76 to 170 |
| Flexural Strength, MPa | 410 to 600 | |
| 28 to 69 |
| Tensile Strength: Ultimate (UTS), MPa | 210 to 370 | |
| 6.9 to 21 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 500 to 1590 | |
| 650 to 1130 |
| Specific Heat Capacity, J/kg-K | 670 to 1180 | |
| 840 |
| Thermal Conductivity, W/m-K | 120 to 170 | |
| 2.0 |
| Thermal Expansion, µm/m-K | 4.0 to 4.5 | |
| 2.5 to 3.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 3.0 to 3.2 | |
| 2.3 to 2.5 |
Common Calculations
| Strength to Weight: Axial, points | 18 to 34 | |
| 0.77 to 2.5 |
| Strength to Weight: Bending, points | 24 to 38 | |
| 3.2 to 7.3 |
| Thermal Diffusivity, mm2/s | 38 to 79 | |
| 1.0 |