Stiffness

SILICON CARBIDE	HIGH LOW	440	Hardness Mechanical strength Variable electrical resistivity Distinct properties that can be tailored
ALUMINA		320-360	General use Wear resistance Electrical insulator Dielectric strength Low dielectric loss
ALUMINIUM NITRIDE		320	Thermally stable Electrical resistivity
SILICON NITRIDE		290	High toughness Thermal shock resistant Tight tolerances
ZIRCONIA		220	Toughness Mechanical Strength High Heat Resistance Corrosion Resistance
CORDIERITE		140	Good thermal expansion Excellent thermal shock resistance
STEATITE		120	Good dielectric strength Low dielectric loss