This specification covers one type of thermoplastic, polysulfone-resin-impregnated graphite fibers in the form of tape or sheet. These products have been used typically in structural composites requiring high modulus of elasticity in tension up to 120 degrees C (248 degrees F), but usage is not limited to such applications.
SAE AMS3899/2B-1993 Referenced Document
SAE AMS3892 FIBERS@ GRAPHITE TOW AND YARN For Structural Composites