Hi Blair - Did the original coating have a salt fog requirement per ASTM
B117? If so, you could subject the questionable brackets to a salt fog test
as an assessment of quality.

Dave Hillman
Rockwell Collins
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On Fri, Sep 2, 2016 at 9:44 AM, Blair Hogg <[log in to unmask]> wrote:

> Hi Technetters! Getting ready for the long weekend (at least here in the
> US)?
>
> I'm looking for some advice on chromate coatings. We produce a phone for
> mining applications, which uses a battery held in by a bracket. The bracket
> is chromate coated.
>
> The most recent batch of brackets sent out to the coating house came back
> with a cloudy appearance to the coating. Apparently something hiccupped in
> their process. The process can't be repeated, so we either scrap the parts
> and make new ones, or use them as is. Problem is, I don't know if the
> cloudy appearance will affect the corrosion protection properties. Any
> chromate experts out there that can offer any advice on this?
>
> Thanks,
> Blair
>