牵引或纱线 碳纤维 结构复合材料 Gf 220（1517）拉伸强度 75（517）拉伸模量

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.Cross Reference: MIL-STD-2073-1,MIL-STD-414,SRM12