Cleaning Zinc Plated Metal Parts

Q. We would like to verify compatibility of zinc plated metal parts with Alconox.

A. Zinc plated metal parts can be cleaned with Alconox® Powdered Precision Cleaner. Depending on the metal and whether there is any defect in the zinc plate coating, you can get galvanic reactions between the zinc and the underlying metal because you are making a battery.  The Alconox solution is simply the electrolyte that conducts electricity. It is always wise to do some test parts to confirm suitability.

We generally recommend avoiding mixed metal baths, but in case where the zinc is plated over another potentially galvanically reactive metal, that obviously cannot be avoided.

In such cases, the oxidation can typically be removed by cleaning with an acidic detergent like Citranox® Liquid Acid Cleaner and Detergent.  If you have older zinc plated parts, you can consider cleaning with Citranox detergent instead.  Especially if your residues are inorganic in nature.  We are happy to discuss further.

To request these or any Alconox, Inc. detergents for free, please complete the questionnaire at Get Sample.  For more information about any one of our Alconox, Inc. detergents, consult the technical bulletin for each product. Or click here to access each of our detergent’s  Safety Data Sheets.

Do you have a critical cleaning question for the experts at Alconox, Inc.?  Search TechNotes to see if it’s been answered before or Ask Alconox.

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