Corundum

Corundum Product details White fused alumina powder as raw material is high-quality, refined by the fused crystal, it is slightly higher than the hardness of corundum, lower toughness, high purity, self-sharpening, grinding ability, heat a small, high efficiency Acid and alkali corrosion, high temperature, good thermal stability. Made with the abrasive, for grinding of high carbon steel, high speed steel. Can be used as grinding, polishing materials, precision casting, coating materials, chemical industry, special ceramics, advanced refractory. Features 1. using imported aluminum oxide powder, to ensure product quality; 2. detection means complete, has a nationally recognized level laboratories to ensure quality and stability; 3. passed ISO9001 certification, strict management; Available Size F16 ~ F320 Chemical composition Al2O3 Fe2O3 Na2O SiO2 CaO K2O ≥ 99.2% ≤ 0.08% ≤ 0.30% 120 # to fine ≤ 0.40% ≤ 0.10% ≤ 0.03% ≤ 0.03% Physical properties Essential minerals True specific gravity g/cm3 Hardness Kg/mm2 Melting point Refractoriness Maximum temperature α-Al2O3 ≥ 3.96 2000 ~ 2200 2000 ℃ ≥ 1850 ℃ 1900 ℃