Mullite vs. High-alumina Refractory
Both mullite 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 (16, in this case) are not shown.
For each property being compared, the top bar is mullite and the bottom bar is high-alumina refractory.
Metric UnitsUS Customary Units
Material Properties
Density, g/cm3 | 2.7 to 3.0 | |
2.1 |
Flexural Strength, MPa | 130 to 160 | |
28 |
Maximum Temperature: Mechanical, °C | 1680 | |
1200 |
Maximum Thermal Shock, °C | 170 to 230 | |
210 |
Specific Heat Capacity, J/kg-K | 950 | |
800 |
Thermal Conductivity, W/m-K | 3.5 to 11 | |
1.5 |
Thermal Diffusivity, mm2/s | 1.4 to 3.7 | |
0.87 |
Thermal Expansion, µm/m-K | 5.8 | |
4.3 |