anti-scratch,anti-acid&alkali,heat resistance,no toxic,no radiation,maintenance free, preservation in new and fire- quartz tilesPhysical properties Density 20kg * m-3 (×103)2.2Coefficient of expansion 25-300-1(×10-6)0.5Softening point1710Annealing point1230Strain point1140Youngs modulus(Pa)7.3×105quartz tiles Quartz glass brick