Wollastonite vs. Alumina

Both wollastonite and alumina are oxide-based engineering 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 alumina.

Wollastonite Alumina (Aluminum Oxide, Al₂O₃)

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Material Properties

Compressive (Crushing) Strength, MPa		260
Compressive (Crushing) Strength, MPa		1920 to 2750

Density, g/cm³		2.8
Density, g/cm³		3.4 to 4.1

Dielectric Constant (Relative Permittivity) At 1 MHz		3.5
Dielectric Constant (Relative Permittivity) At 1 MHz		7.8 to 11

Dielectric Strength (Breakdown Potential), kV/mm		6.0
Dielectric Strength (Breakdown Potential), kV/mm		8.9 to 12

Flexural Strength, MPa		100
Flexural Strength, MPa		260 to 430

Maximum Temperature: Mechanical, °C		1200
Maximum Temperature: Mechanical, °C		650 to 1730

Thermal Conductivity, W/m-K		0.8
Thermal Conductivity, W/m-K		14 to 30

Wollastonite vs. Alumina

Material Properties

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