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Author Topic: can you apply yellow chromate over a clear chromate?  (Read 1401 times)

pauloe

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can you apply yellow chromate over a clear chromate?
« on: January 22, 2023, 04:21:45 »
If you have a part that has been finished with a clear chromate, can you just apply a yellow chromate to give the part a yellow color?
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Paul
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Shvegel

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Re: can you apply yellow chromate over a clear chromate?
« Reply #1 on: January 22, 2023, 11:00:25 »
I have had some success and some failures.  I would imagine a clear chromate without any further surface treatment would take a yellow chromate just fine.  I think the trouble arises when you have a production part that has been oiled or coated to keep it nice during shipping.  I try and if it doesn't work I replate the part then yellow chromate it.
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