Compact microstructure of AZS-33# enables it to have very good corrosion resistance to melting glass.  It rarely results into stoning, blistering and other defects to glass, so AZS-33# is the most common product used in glass furnaces.

 

Typical Chemical Composition:

Al2O3 49.8% 

Zr2O3 33% 

SiO2 15.5%  

NaO2 1.4%  

Fe2O3+TiO2+CaO   0.3%

 

Typical Crystallographic Analysis:

baddeleyite 32%  

Alumina (corundum)  47%    

Vitreous Phase 21%

 

Typical Physical Properties:

True Specific Gravity: 3.84g/cm3  

Cold Crushing Strength: >350MPa 

Refractoriness under load(0.2MPa): >1700°C

Typical Volume Density:3.70g/cm3

Exudation:<3%