Form: This specification covers boron filaments and 2024-0 (AMS 4007) aluminum-base alloy foil laminated and bonded into a composite sheet. Application: Primarily for fabrication of structural components by forming@ laminating@ and diffusion bonding into structural components where the composite properties of high-modulus boron filaments and aluminum-base alloy matrix are desirable for use up to 500oF (260oC).