1 This International Standard specifies the test solution, the apparatus and the procedure for a saline droplets corrosion test for assessment of the quality of metallic and non-organic coatings, made in accordance with the requirements of coating or product specifications on metallic substrates.
2 The method of test specified is suitable for detecting defects and discontinuities in metal coatings cathodic to the underlying metal. It is also suitable for chemical or elec-trochemical conversion coatings such as those obtamed by chromate and phosphate treatments. The method is not suitable for testing coatings intended for the more severe types of service.
3 The type and number of test specimens, the exposure periods to be used for a particular product and the interpretation of results are not specified in this International Standard. Such details should be given in the appropriate materials or coating specification.
DS/ISO 4536:1987 history
1987DS/ISO 4536:1987 Metallic and non-organic coatings on metallic substrates Saline droplets corrosion test (SD test)