White Fused Alumina materials for the casting of reactive alloys and steels at very high temperatures. Fused aluminum oxides are synthetic hard minerals based on alpha – aluminum oxide.
They are produced in electric arc furnaces by electrothermal fusion at temperatures around 2050°C. These products show a value of 9 on the Mohs scale of hardness, placing them close to diamond (Mohs 10), the hardest known substance. Based on very high hardness, excellent thermal and chemical stability, and a high degree of thermal shock resistance, fused aluminum oxide is mainly used to produce refractory materials. It is used in Investment Casting as refractory stucco and filler for primary and back-up slurries, designed for use with high-temperature alloys and steels.
