Porcelains are multiphase ceramics produced from natural raw materials. The microstructural development of these ceramics depends on their composition, on the characteristics of the raw materials, and on the ceramic processing
Cordierite Refractory or open porosity Cordierite has a low coefficients of thermal expansion and therefore performs better in thermal shock applications
Alumina is the most versatile engineered ceramic because of its high temperature service limit along with its chemical, electrical and mechanical properties. It is also relatively low cost, is easily formed and finished using a number of fabrication methods including injection molding for low cost, high volume production runs.