bROWN Aluminum Oxide

Calcined BFA: It is a high-quality refractory material made by heating brown fused alumina to 1050°C temperatures. It is known for its heat resistance, low thermal expansion, and resistance to chemical corrosion, making it ideal for use in refractory products such as vitrified grinding wheels in ceramics, kiln furniture, and furnace linings.

Blue-Fired BFA: While turning grain-color dark blue, firing at 1350°C achieves far greater toughness and strength, much lower iron content, a very low coefficient of thermal expansion, and excellent hydrophilicity, all of which increase grinding performance and accuracy. Primary applications: coated abrasives (paper, cloth and belts) and heavy-duty grinding wheels.

Ceramic-Coated BFA: Ceramic coating improves purity and hydrophilicity, reduces dust, and achieves grain surfaces that have greater toughness, strength, and roughness, and that are also more uniform in particle size. Primary applications: coated and bonded abrasives.

Ceramic-Coated Blue-Fired BFA: These grains deliver all of the advantages of both Ceramic-Coated and Blue-Fired BFA. Primary application: coated and bonded abrasives, especially those for use on hardened steel and other high-carbide materials.