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 175?? (347??). Classification: G131.000 psi (903 MPa) tensile strength@ 25@000@000 psi (172 GPa) tensile modulus carbon fiber impregnatedwith epoxy resin for service up to 175?? (347??).