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High-alumina Refractory vs. Zircon

Both high-alumina refractory and zircon are oxide-based engineering ceramics. There are 5 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

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

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.1
3.9
Flexural Strength, MPa 28
450
Maximum Temperature: Mechanical, °C 1200
1650
Thermal Conductivity, W/m-K 1.5
3.5
Thermal Expansion, µm/m-K 4.3
5.0