brown fused alumina for balsting

Brown fused alumina, called corundum, a kind of material that is made from high purity bauxite, fusing in a high temperature electirc arc furance. The material is of good hardness and brittleness. Specification Color: dark brown , and changed in dark blue after calcined; Hardness: HV1800-2000, good roughness than white fused alumina; True density: 3.9g/cm3 Max usable temperature: 1900°c Chemical composition Grit Size Al2O3 TiO2 SiO2 Fe2O3 CaO 16-40mesh 94.6% 2.0% 1.0% 0.55% 0.6% 90-140mesh 93.8% 2.0% 1.2% 0.54% 0.7% 325-0mesh 94.0% 2.2% 1.5% 0.50% 0.7% Size available Abrasives: F12-F220; F240-F1200 Refractory: 0.0-0.5mm,0.5-1.0mm,3-8mm Other size is available as required; Application Sand blasting; Used for janes washing ; Resin and coated abrasives; Free grinding; Refractory material;

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