This test is  useful for production control and for acceptance testing of products.

Interpreting the results of qualitative methods for determining the adhesion of metallic coatings is often a controversial subject.

If more than one test is used, failure to pass any one test is considered unsatisfactory.

In many instances, the end use of the coated article or its method of fabrication will suggest the technique that best represents functional requirements.

For example, an article that is to be subsequently formed would suggest a draw or a bend test; an article that is to be soldered or otherwise exposed to hea

t would suggest a heat-quench test.

If a part requires baking or heat treating after plating, adhesion tests should be carried out after such posttreatment as well.

*** Several of the tests are limited to specific types of coatings, thickness ranges, ductilities, or compositions of the substrate.