Alumina vs. High-alumina Refractory
Both alumina and high-alumina refractory are oxide-based engineering ceramics. There are 8 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.
For each property being compared, the top bar is alumina and the bottom bar is high-alumina refractory.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 3.4 to 4.1 | |
| 2.1 |
| Flexural Strength, MPa | 260 to 430 | |
| 28 |
| Maximum Temperature: Mechanical, °C | 650 to 1730 | |
| 1200 |
| Maximum Thermal Shock, °C | 200 to 300 | |
| 210 |
| Specific Heat Capacity, J/kg-K | 870 to 940 | |
| 800 |
| Thermal Conductivity, W/m-K | 14 to 30 | |
| 1.5 |
| Thermal Diffusivity, mm2/s | 3.7 to 10 | |
| 0.87 |
| Thermal Expansion, µm/m-K | 6.7 to 8.2 | |
| 4.3 |