How Can I Tell The Quality of Brown Fused Alumina? Brown Fused Alumina (BFA) is one of the most widely used abrasive materials in industrial processes. Known for its high hardness, toughness, and durability, it finds applications in grinding wheels, sandblasting, refractory products, and surface preparation. However, not all BFA products are equal. The quality of Brown Fused Alumina directly impacts performance, efficiency, and even safety in its applications. For manufacturers, distributors, and end-users, understanding how to judge the quality of BFA is critical.