scope:

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 is based on real corrosive climate conditions (temperature and humidity cycles) and provides differentiated results for a large number of uses in automotive applications. This test method causes corrosion processes and creates corrosion patterns on coated components that are typical for automobiles, and these patterns 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. - Surface and edge corrosion on special test plates, adhesive specimens or components is 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 originally was developed for coating systems on aluminium, steel or galvanized steel but it can also be used for the assessment of the corrosion resistance of metals and their alloys.