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topic 59169

Hydrogen embrittlement of INCO 718 by silver plating possible?



February 21, 2013

Q. Dear all,

I have read a lot literature (mostly about high pressure hydrogen embrittlement), but have not found anything linked to plating.
Is it possible that INCO 718 embrittles by hydrogen, due to silver plating or etching?
I have found out that embrittlement is possible due to the high strength and crystal structure of INCO 718, which is in a way similar to high strength steel, where this problem is known.
Are there any standards about his topic?

Thanks in advance for your help.

Sebastian Stark
- Berlin, Germany


March 10, 2013

A. Dear Sabestian
All electroplating will create hydrogen embrittlement , but the effect can be detrimental for hard steels. Regarding INCO718 we used to do chrome and nickel and after back and there is no special cautions.
Good luck

Cair Shishani
Khair Shishani
aircraft maintenance - Al Ain, UAE

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