本文件规定了一种基于循环腐蚀试验的方法，用于测试在铝、钢或镀锌钢上使用涂层系统的汽车的腐蚀防护。 该测试方法使用腐蚀条件（温度和湿度梯度以及盐雾）来创建真实的腐蚀模式。这些腐蚀模式是典型的汽车腐蚀模式，在足够相似的保护涂层系统的情况下，它们具有可比性。特别是，加速试验研究了涂层人为损伤引起的分层/腐蚀蠕变。 还包括表面和边缘腐蚀的调查或粘合剂试样或部件的调查。该循环腐蚀试验也适用于法兰区域或间隙附近的腐蚀试验。 本文件用于评估汽车行业中的涂层基板（试样、车身和安装零件）。其他应用，如带有未上漆金属涂层的部件，不属于标准化工作范围的一部分。本文件最初是为铝、钢或镀锌钢上的涂层系统开发的，但也可用于评估其他金属及其合金上涂层系统的耐腐蚀性。

This document specifies a method based on a cyclic corrosion test for testing the corrosion protection of automobiles using coating systems on aluminium, steel or galvanized steel. The test method uses corrosive conditions (temperature and humidity ramps and salt spray) to create realistic corrosion patterns. These corrosion patterns are typical for automobiles, and they are comparable in the case of sufficiently similar protective coating systems. In particular, the accelerated test investigates the delamination/corrosion creep that results from defined artificial damage to a coating. Investigations of surface and edge corrosion or investigations of adhesive specimens or components are also covered. This cyclic corrosion test is also suitable for testing corrosion in flanged areas or near gaps. This document was developed for the assessment of coated substrates (test specimens, bodywork and mounted parts) in the automotive industry. Other applications, such as components with unpainted metallic coatings, were not part of the scope of the standardization work. This document was originally developed for coating systems on aluminium, steel or galvanized steel but it can also be used for the assessment of the corrosion resistance of coating systems on other metals and their alloys.