Product Introduction Cordierite is magnesium aluminum silicate material, which has very low linear expansion, low coefficient of thermal expansion and excellent thermal shock resistance. Cordierite also has excellent mechanical strength, porosity standards, and excellent performance in cost-effective extrusion and dry pressing forms. Cordierite honeycomb is divided into two types: porous and compact. Chemical composition SiO2Al2O3MgOFe2O3Na2OK2O 48-51%31-34%14-16%