It is brown aluminium oxide containing low titanium di-oxide produced by controlled smelting of special grade bauxite in an electric arc furnace above 2000°C. the lower titanium gives an intermediate toughness between brown and white aluminium oxide to ensure consistent quality. Also the grains are further annealed at intermediate temperatures to get predictable toughness.
Typical Chemical Analysis
|Al2O3 (Min%)||SiO2 (Max %)||Fe2O3 (Max%)||TiO2(Max %)|