Form: This specification covers one type of epoxy-resin-impregnated carbon fibers in the form of tape and sheet. Application: Primarily for use in structural composites requiring high tensile strength up to 80??(176??. Classification: G 200@000 psi (1379 MPa) tensile strength@ 18@000@000 psi (124 GPa) tensile modulus carbon fiber impregnated with epoxy resin for service up to 80??(176??.