Abstract: The invention resides in a carbonaceous aircraft brake disk having a reuseable lightweight carbon composite center core to which can be bonded lightweight composite wearing materials to each side. The wearing surface is particularly designed for wear loading applications, and is relatively thin thereby simplifying manufacturing and quality assurance steps. The center core is designed for long life and strength at relatively low cost. A carbon felt layer saturated with an adhesive is located between the center core and the lightweight side wear materials to form an integral disk upon pyrolizing of the adhesive.