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Hydrogen embrittlement relief after plating for alloy parts




2002

Dear Specialists,

I have a question about hydrogen embrittlement relief of electro or electroless plating.

According to the following paragraphs of each specifications, hydrogen relief baking is required only for "STEEL" or "FERROUS" parts

AMS2403 (Nickel plating) para. 3.3 and 3.4.5.

AMS2424 (Low stress nickel plating) para. 3.3 and 3.4.7.

AMS2404 (Electroless nickel plating) para. 3.3 and 3.4.5.

AMS2406 (Chrome plating) para. 3.3 and 3.4.4.

Also, AMS2759/9 specifies only for "STEEL" parts.

I would like to know in case of Nickel or Cobalt base alloy part, whether it requires baking or not.

Best regards,

Jung Won
- Changwon City, Gyungnam, Korea


2002

Hello Jung!

You would be wise to check with your customer, if possible. My interpretation would be that it is not required for non-ferrous alloys, and my company would not require it.

lee gearhart
Lee Gearhart
metallurgist - E. Aurora, New York




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