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Info on Zinc Phosphate Coatings
I have a casting that has been coated with zinc phosphate per Fed TT-C-490 [link by ed. to spec at TechStreet]. Should it appear as a thin white residue when properly applied?
Sierra Research - Buffalo, New York, USA
What alloy is this casting? White residue doesn't sound right to me. It certainly shouldn't rub off easily.
Falls Township, Pennsylvania
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