Wollastonite vs. Fused Silica

Wollastonite belongs to the oxide-based engineering ceramics classification, while fused silica belongs to the glass and glass-ceramics. There are 7 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.

For each property being compared, the top bar is wollastonite and the bottom bar is fused silica.

Wollastonite Fused Silica (Fused Quartz)

Metric UnitsUS Customary Units

Material Properties

Compressive (Crushing) Strength, MPa		260
Compressive (Crushing) Strength, MPa		1100

Density, g/cm³		2.8
Density, g/cm³		2.2

Dielectric Constant (Relative Permittivity) At 1 MHz		3.5
Dielectric Constant (Relative Permittivity) At 1 MHz		3.8

Dielectric Strength (Breakdown Potential), kV/mm		6.0
Dielectric Strength (Breakdown Potential), kV/mm		30

Flexural Strength, MPa		100
Flexural Strength, MPa		67

Maximum Temperature: Mechanical, °C		1200
Maximum Temperature: Mechanical, °C		1080

Thermal Conductivity, W/m-K		0.8
Thermal Conductivity, W/m-K		1.4

Wollastonite vs. Fused Silica

Material Properties

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