... . Alumina ceramic is kind of structural ceramics, with insulation resistance, voltage resistance, high strength, good thermal conductivity ... characteristics. Used in electronic ceramic substrates, ceramic electrical insulation, vacuum devices, devices porcelain, spark plugs and other ... 0.220.230.23Thermal Characteristics Linear expansion coefficient (200C-5000C) 10-6/0C7.17.28Thermal conductivity w/( ...