本文件规定了在室温（理想情况下在10°C和35°C之间）下，在没有故意引入应力集中的情况下，对金属试样进行恒定振幅、力或位移控制的轴流机进行平面弯曲疲劳试验的条件。本文件不包括反向/部分加载试验。试验的目的是提供相关结果，例如在给定材料条件下，施加的应力与失效循环次数之间的关系，在不同应力比下，用硬度和微观结构表示。 尽管矩形和斜角十字试样的形状、制备和测试- 本文件不包括部件测试和其他特殊形式的测试。 本文件不包括缺口试样的疲劳试验，因为到目前为止，任何标准都没有规定缺口试样的形状和尺寸。附录A中给出了指南。然而，本文件中描述的疲劳试验程序可用于测试此类缺口试样。 疲劳试验的结果可能会受到大气条件的影响。如果需要受控条件，ISO 554:1976，2.1适用。

This document specifies the conditions for conducting the plane bending fatigue test on an axial machine, constant-amplitude, force or displacement controlled, at room temperature (ideally between 10 °C and 35 °C) on metallic specimens, without deliberately introduced stress concentrations. This document does not include the reversed/partially loading test. The purpose of the test is to provide relevant results, such as the relation between applied stress and number of cycles to failure for a given material condition, expressed by hardness and microstructure, at various stress ratios. Although the shape, preparation and testing of specimens of rectangular and bevelled cross-section are specified, component testing and other specialized forms of testing are not included in this document. Fatigue tests on notched specimens are not covered by this document since the shape and size of notched test pieces have not been specified in any standard so far. Guidelines are given in Annex A. However, the fatigue-test procedures described in this document can be used for testing such notched specimens. It is possible for the results of a fatigue test to be affected by atmospheric conditions. Where controlled conditions are required, ISO 554:1976, 2.1 applies.