This standard describes a method for testing total defects and mechanical damage in metallic coatings using alkaline polysulfide solutions. This test is used to detect the presence of serious defects and abrasions in coatings, especially damage to copper or copper alloy substrates. It is suitable for various metallic coatings, such as tin plating, nickel plating, etc. The test is less sensitive to small holes and is mainly used to identify serious defects in coatings. It is not suitable for general porosity testing.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
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