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?C (176?F). Classification: G 150@000 psi (1034 MPa) tensile strength@ 19@000@000 psi (131 GPa) tensile modulus carbon fiber impregnated with epoxy resin for service up to 80?C (176?F).