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Electroless nickel plating on brass per ASM 2404, class 2

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I have brass parts that require electroless nickel plating for corrosion resistant. AMS2404 [link is to spec at TechStreet], class 2 requires post plating heat treatment for harden the deposit. Do I actually get better adhesion of nickel by specifying class 2? What are the advantages and disavantages between class 1 and class 2 EN on brass?

Norm Dang
Instrument Co. - Santa Ana, California, USA


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Hardening electroless nickel coatings will severely reduce their corrosion resistance and may cause the coating to crack. However, it will improve adhesion.


Ron Duncan

- LaVergne, Tennessee

Ed. note:

It is our sad duty to alert the readers to the passing of Ron Duncan on Dec. 15, 2006. For those who would like to know more about him, a brief obituary opened Update No. 13 of our Metal Finishing Industry Update Podcast.


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