IS 6910 : 1985 Method of testing corrosion resistance of electroplated and anodized aluminium coatings by acetic acid salt spray (AAS) test

1 Scope

1.1 This standard specifies the apparatus, reagents and theprocedure to be used and prescribes the conditions for conductingthe acetic acid salt spray (ASS) test for assessment of thequality, by way of corrosion resistance, of metallic coatingsapplied in accordance with the requirements of the respectivecoating or product specifications.

1.2 The detailed requirements of this method have nosignificance other than to ensure that comparable results areobtained by different laboratories, testing the same coating orproduct. This method of testing is especially useful for testingdecorative coatings of copper + nickel + chromium or nickel +chromium; it has also been found suitable for testing anodiccoatings of thickness between 3 to 5 micrometres on aluminium.

1.2.1 The suitability of this test and the correlation of theresults with service exposures should be determined before it isspecified for coatings other than those mentioned earlier.

1.3 This standard does not specify the type of test specimen,the exposure period for a particular coating or product, or theinterpretation of results. Such details are given in theappropriate coating or products specifications.

2 References

IS 2 :1960 Rules for rounding offnumerical values

IS 1070 : 1977Specification for water for general laboratory use

IS 6009 : 1970 Methodfor evaluation of results of accelerated corrosiontests