The test standard summaries are for general guidance only. Though believed to be accurate at the time of writing, this may change over time. So this information should not be used as a substitute for referring to a complete test standard, at an appropriate revision level.
Note: the terms salt spray, salt mist and salt fog are all in wide spread use within corrosion test standards. In this context they can be considered to be equivalent and interchangeable terms.
Kesternich testing simulates acid rain or industrial chemical exposure to evaluate the relative corrosion resistance of the coating, substrate, or part itself. Parts or panels are placed inside a specially designed chamber and are exposed to SO2 and humidity before being evaluated for resistance to corrosion. The following standard used in this type of test.
DIN 50018 – Testing in a saturated atmosphere in the presence of sulphur dioxide (So2).
This standard specifies the general conditions and procedures for the testing of test specimens in condensation atmospheres in the presence of sulfur oxide – and specifically for sulfur dioxide concentrations that are not included in DIN EN ISO 6988:1997-03 – and which are required to be complied with to ensure that the results of tests carried out in different laboratories are reproducible. If a particular concentration has not been specified, testing is to comply with DIN 50018 – AHT 1,0 S. It is advisable to test only same-type anti-corrosion systems at the same time in any one apparatus, as interactions between test specimens of different systems cannot be excluded.