1.1本国际标准建立了碳纤维长丝的名称系统，可用作规范的基础。 1.2本名称系统适用于用于增强聚合物复合材料的长丝。 它不适用于短纤维纱线、机织物、编织物、针织物， 垫子等。 1.3长丝纱线的类型通过基于适当等级的指定性能的分类系统彼此区分: a)拉伸弹性模量； b)拉伸强度； c)线密度。 1.4这并不意味着具有相同名称的材料具有相同的性能。本国际标准不提供工程数据、性能数据或加工条件数据，这些数据可能需要为特定应用和/或加工方法指定材料。1.5为了指定用于特定应用的长丝纱线或确保可重复加工，附加的 要求可以在数据块3中给出（参见条款3）。

1.1 This International Standard establishes a system of designation for filament yarns of carbon fibre which may be used as the basis for specifications. 1.2 This designation system is applicable to filament yarns used for the reinforcement of polymer composites. It does not apply to discontinuous fibre products pyrolized in the form of staple yarns, woven fabrics, braids, knits, mats, etc. 1.3 The types of filament yarns are differentiated from each other by a classification system based on appropriate levels of the designatory properties: a) tensile modulus of elasticity; b) tensile strength; c) linear density. 1.4 It is not intended to imply that materials having the same designation give the same performance. This International Standard does not provide engineering data, performance data or data on processing conditions which may be required to specify a material for a particular application and/or method of processing. 1.5 In order to specify a filament yarn for a particular application or to ensure reproducible processing, additional requirements may be given in data block 3 (see clause 3).