In the DIN EN ISO 9227 standard, the basis of which was developed by the German Standardization Institute (DIN) and later republished by the International Standards Organization (ISO), for the assessment of corrosion, neutral salt spray (NSS) and acetic acid salt spray (AASS) methods as well as copper accelerated The acetic acid salt spray (CASS) test method is also described. This standard describes the procedure for determining the apparatus, reagents, and resistance of metallic materials with or without permanent or temporary corrosion protection used when applying this test method. This standard also includes a method for assessing the corrosivity of the test cabinet environment.
However, this standard does not describe the sizes or types of test specimens, the exposure time to be used for a particular product, or the interpretation of results. Such details are contained in the appropriate product specifications.
Salt spray tests are found particularly useful for detecting discontinuities such as pores and other defects in certain metallic, organic, anodic oxide and conversion coatings.
Copper accelerated acetic acid salt spray tests (CASS) are applied to test decorative coatings consisting of copper + nickel + chromium or nickel + chromium. It is also suitable for testing anodic and organic coatings on aluminum.
All salt spray methods are suitable for checking that the quality of a metallic material with or without corrosion protection is maintained. They are not intended to be used for comparative testing as a means of ranking different materials against each other by corrosion resistance, or as a means of predicting the long-term corrosion resistance of the material under test.
Briefly, the copper accelerated acetic acid salt spray (CASS) test method is an aggressive accelerated corrosion test used to determine the corrosion resistance of various aluminum alloys and to test chromium plating on zinc and steel castings.
CASS copper accelerated acetic acid salt spray tests services between corrosion tests in artificial atmospheres, within the scope of ISO 9227-CASS standard, with its trained and expert staff and advanced technological equipment, among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors. also gives.
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