The Passivation process is a method of removing metal oxides; heat-treat scale and other foreign materials from stainless steel, leaving the surface chemically clean and prepared for further processing. Passivation restores the original corrosion-resistance surface by forming a thin, transparent oxide film on the part. Parts that are to be soldered or brazed should be Passivated before, but not after, these operations. We offer the following; Passivation CRS Types: II, VI, VII and VIII to QQ-P-35 and Passivation CRS class F, H and I to ASTM-A380 and Passivation CRS Nitric types 1, 2 and 4 per specification ASTM-A967. More information? E-mail: sales@unitedplating.com