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Steatite vs. High-alumina Refractory

Both steatite 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 (15, in this case) are not shown.

For each property being compared, the top bar is steatite and the bottom bar is high-alumina refractory.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 1.9 to 2.8
2.1
Flexural Strength, MPa 32 to 150
28
Maximum Temperature: Mechanical, °C 750 to 1230
1200
Maximum Thermal Shock, °C 90 to 160
210
Specific Heat Capacity, J/kg-K 850 to 860
800
Thermal Conductivity, W/m-K 1.8 to 2.5
1.5
Thermal Diffusivity, mm2/s 0.79 to 1.1
0.87
Thermal Expansion, µm/m-K 7.0 to 9.0
4.3