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Zircon vs. Silicon Nitride

Zircon belongs to the oxide-based engineering ceramics classification, while silicon nitride belongs to the non-oxide engineering ceramics. There are 7 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 zircon and the bottom bar is silicon nitride.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 3.9
2.2 to 3.4
Dielectric Constant (Relative Permittivity) At 1 MHz 8.8
8.0 to 10
Dielectric Strength (Breakdown Potential), kV/mm 7.9
Flexural Strength, MPa 450
130 to 810
Maximum Temperature: Mechanical, °C 1650
1000 to 1330
Thermal Conductivity, W/m-K 3.5
12 to 31
Thermal Expansion, µm/m-K 5.0
2.5 to 3.2