Depending on specific type, these alumina ceramics feature
a variety of properties:
Good mechanical strength
Good heat conductivity and fire resistance
Good corrosion and wear resistance
Very good electric insulation

The alumina substrates also possess several unique
features:
Good surface with high smoothness/flatness and less
porosity
High resistance to heat shock
Low warpage and camber
Stable in very high temperature and corrosive chemical
Very stable breaking strength and shape/dimension variance