Alumina powder ALODUR® for investment casting

zirconia

The highest grades of synthetic materials are designed for investment casting applications. ALODUR products are the most thermally stable and physically resistant aggregates and fillers for use in the most arduous conditions in high-temperature processing. Our ALODUR white fused alumina materials are ideally suited for the casting of reactive alloys and steels at very high temperatures. Available in various forms to suit required uses, ALODUR WSK, SWSK, ZWSK, WRG, WRG IC, KKW and KKD fused aluminum oxides are all synthetic hard minerals based on alpha – aluminum oxide. Fused Zirconia Mullite White Fused Mullite Bubble Alumina Our ALODUR range of products is available in aggregate and powder forms and really comes into its own when applied in investment casting for steel alloys of all types. They are produced in electric arc furnaces by electrothermal fusion at temperatures of around 2050°C. These products show a value of 9 on the Mohs scale of hardness, placing them close to that of the hardest known substance, diamond (Mohs 10). In addition to high hardness, they also show excellent thermal and chemical stability, as well as a high degree of thermal shock resistance. It is used in investment casting as refractory stucco and filler for primary and backup slurries, designed for use with high-temperature alloys and steels. Key benefits High degree of thermal shock resistance Low and stable thermal expansion Very chemically stable and resistant to corrosion Excellent resistance to abrasion High density & low porosity Outstanding properties at high temperature