本文件规定了测定调节或湿润状态下单个纤维断裂力和断裂伸长率的试验方法和条件。 当在不同类型的测试设备上进行这些纤维特性的测定时，通常不会给出相同的结果。为了避免这种差异，本文件仅限于使用恒速拉伸试验机。 它适用于所有纤维，包括卷曲纤维，前提是可用纤维长度能够达到本文件中规定的标距长度。 注:对于天然纤维（尤其是羊毛和棉花），最常用的断裂试验是纤维束的断裂试验（见ISO 3060和IWTO 32？82）。

This document specifies the method and conditions of test for the determination of the breaking force and elongation at break of individual fibres in the conditioned or wet state. The determination of these fibre properties, when carried out on different kinds of testing equipment, will not generally give identical results. To avoid such differences, this document is restricted to the use of constant-rate-of-extension testing machine. It is applicable to all fibres, including crimped fibres, provided that the length of fibre available enables the gauge length specified in this document. NOTE For natural fibres (especially wool and cotton), the breaking test most commonly performed is that of bundles of fibres (see ISO 3060 and IWTO 32？82).