Alumina Fiber Insulation

Alumina fiber is a polycrystalline inorganic fiber whose main component is alumina, with aluminum oxide as the main component and a small amount of silica. The operating temperature of alumina fiber reaches 1450℃-1600℃, and the melting point is 1840℃. The melting point of pure alumina fiber (99) is as high as 2050℃. Alumina fiber has low shot content or loose fiber which is safe. Shot content less than 1%, while ceramic fiber blanket has almost 25% shot content. Therefore, ceramic blanket or RCF is not allowed to be used in certain industries such as automotive.