... % Al2O3 : 1 . high purity 2. low coefficient of linear expansion 3. corrosion-resistant brown fused alumina 95% Al2O3 brown fused alumina ... , smelting rare metals, special alloys, ceramics, iron-smelting furnace of the lining (walls and tubes); physical and chemical containers , ... characteristics, in the chemical system, used for a variety of reaction vessels and pipelines, chemical pump parts; to do ...