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Titanium Staining

We are having staining problems on titanium after post penetrant cleaning. The stains appear as thin straight lines that run the length of the part. We polish them out and 24 hours later they re-appear. See attached photos. Any help or ideas would be very helpful.

57672-1 57672-2 57672-3

Don Neubert
Quality Control - Amityville, New York, USA
September 3, 2011

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