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Do you know what Passivation is?

During forming, machining, tumbling, lapping and other operations performed in the manufacture of stainless steel products, microscopic particles of iron may be embedded in or deposited on the surfaces of these products. If allowed to remain, the iron particles provide corrosion sites that will ultimately result in accelerated corrosion of the product. In order to prevent this corrosion, semi-finished parts are given a Passivation treatment. The Passivation process consists of immersing the stainless steel in a solution of citric acid, or other acid plus oxidizing salts, which dissolves the embedded or deposited iron and restores the original corrosion-resistant surface (a thin, transparent oxide film).

Please contact our Technical Sales Manager, Al Becker (408) 727-9315 x230 or our Quality Engineer, Marshall Roe (408) 727-9315 x232 for more information about Passivation.

 

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