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What is the purpose of zinc or cadmium plating?

April 26, 2017Cadmium plating purpose zinc

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What is the purpose of zinc or cadmium plating?

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Bare steel will rust very quickly once it has been exposed to moisture and oxygen in the atmosphere. Zinc and cad act as a barrier, protecting the steel below. Even if scratched, the remaining zinc will protect the steel and will not peel, unlike paint or chrome coatings.