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With corrosion testing through salt spray test we test the corrosion resistance of your products or the corrosion protection they are coated with. Especially products in the maritime environment but also in the automotive, rail and aviation sectors are affected.
In our environmental laboratories we simulate these environmental influences and test your test specimen according to all known standards.
The salt spray test according to DIN EN ISO 9227 (NSS test) is performed in a salt spray chamber. At a temperature of 35 °C, a salt spray mist is generated continuously or cyclically using saline solution (NaCl, solution e.g. 50 ± 5 g/l) with a controlled pH value. The mist surrounds the test specimen with a corrosive salt water film. NSS: neutral salt spray (mixture of demineralized water and common salt).
For projects with additional or special requirements we can adapt the temperature in order to simulate specific climate zones or conditions.
The duration depends on the expected corrosion resistance of the test specimen or its coating, exposure times are e.g. 96 h, 240 h, 480 h, 720 h or more (cyclic execution in alternation with e.g. dry phases possible).
After completion of the salt spray test, the test specimen is visually inspected for damages.
Standards (extract):
List of environmental testing ranges
Standards in the flexible scope of accreditation
What is corrosion testing?
Corrosion test is a test performed in the salt fog chamber with a salt solution of 5 (+/- 1)% by weight of salt and 95% by weight of distilled or fully demineralized water.
The test is suitable for assessing the quality and uniformity of protective coatings.
What is the purpose of corrosion testing?
The purpose of the test is to compare the resistance of test objects of a similar construction to the effects of salt spray.
How long does a corrosion test take?
The individual determination must specify one of the following exposure times: 16 hours, 48 hours (2 days), 96 hours (4 days), 168 hours (1 week), 336 hours (2 weeks), 672 hours (4 weeks).
How is corrosion testing performed?
The test item is exposed to the salt mist that is sprayed in the salt fog chamber for a certain period of time. The test item is then examined to see whether anything has changed on the test item, for example rust or other changes.
What does temperature storage effect?
Temperature storage can, for example, speed up the artificial ageing of products.
What can be determined through a temperature change test/climate change test?
The temperature change test or climate change test can be used to determine the effects that frequent temperature changes will have in future areas of application. In addition to the differences between the test temperature, dwell time and the temperature change range in different temperature zones play an important role.
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