Tow or Yarn, Carbon Fibers For Structural Composites GF (0X) 400 (2758) Tensile Strength, 33 (228) Tensile Modulus(STABILIZED Dec 2016) AMS3892/7B

This specification covers one type of continuous multifilament carbon fibers in the form of a tow or yarn (when twisted). The weight per unit length of the tow or yarn is governed by the filament count which is identified by the supplier's grade or material designation.