Alumina continuous fiber can be used for hypersonic aircraft, antenna covers, and radar transmission covers. Using alumina continuous fiber as a new generation material with higher temperature requirements has become a trend. European and American countries have already applied this material to space shuttles, interstellar spacecraft, and weapon equipment, which can play a good role in temperature resistance and thermal insulation.

Alumina short fibers can be used at temperatures ranging from 1200 ℃ to 1800 ℃. Their fiber products, such as fiber blankets, felts, paper, modules, and shaped parts, have low density and heat capacity, low thermal conductivity, and good thermal shock resistance. They can also be directly used as insulation filling materials for high-temperature kilns, such as furnace sidewalls, roofs, and doors, and as insulation seals for high-temperature components.