The tabular aluminas are produced with the sinter from calcinated alumina at approximately 1.850°C. The end product contains large and plate-like crystals of alpha-calcinated alumina, which gives it the name of tabular alumina. The basic principle for the production of tabular alumina is to produce a thermal-stable and controllable microstructure. This transformation is obtainable after several thermal physical steps.

Tabular alumina has the following typical characteristics:

• high chemical purity
• high solidity
• high melting point – 2,040°C
• good resistance to thermal shock 
• high electrical resistance
• low shrinkage point