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"After passivating 347 stainless steel per AMS700 Type VI there is a stain pattern. On inspection at 10x magnification, I see that the surface is pitted. Process steps are alkaline degrease at 140\u00B0F, two rinses, final rinse in reverse osmosis water, nitric strike at 5 percent by volume, then two rinses with the final reverse osmosis (water quality 200 ppm). The stains or discolorations are in a straight line pattern. Any suggestions?"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.pfonline.com/articles/stainless-steel-streaking-after-passivation>