This International Standard specifies the apparatus@ the reagents and the procedure to be used in conducting the neutral salt spray (NSS)@ acetic acid salt spray (AASS) and copper-accelerated acetic acid salt spray (CASS) tests for assessment of the corrosion resistance of metallic materials@ with or without permanent or temporary corrosion protection. It also describes the method employed to evaluate the corrosivity of the test-cabinet environment. It does not specify the dimensions of test specimens@ the exposure period to be used for a particular product@ or the interpretation of results. Such details are provided in the appropriate product specifications. The salt spray tests are particularly useful for detecting discontinuities@ such as pores and other defects in certain metallic@ organic@ anodic oxide and conversion coatings. The neutral salt spray test applies to: ?? metals and their alloys; ?? metallic coatings (anodic and cathodic); ?? conversion coatings; ?? anodic oxide coatings; ?? organic coatings on metallic materials. The acetic acid salt spray test is especially useful for testing decorative coatings of copper + nickel + chromium@ or nickel + chromium. It has also been found suitable for testing anodic coatings on aluminum. The copper-accelerated acetic acid salt spray test is useful for testing decorative coatings of copper + nickel + chromium@ or nickel + chromium. It has also been found suitable for testing anodic coatings on aluminum. The salt spray methods are all suitable for checking that the comparative quality of a metallic material@ with or without corrosion protection@ is maintained. They are not intended to be used for comparative testing@ to rank different materials relative to each other with respect to corrosion resistance.
EN ISO 9227:2006 history
2022EN ISO 9227:2022 Corrosion tests in artificial atmospheres - Salt spray tests (ISO 9227:2022)
2017EN ISO 9227:2017 Corrosion tests in artificial atmospheres - Salt spray tests
2012EN ISO 9227:2012 Corrosion tests in artificial atmospheres - Salt spray tests
2006EN ISO 9227:2006 Corrosion tests in artificial atmospheres - Salt spray tests