Passivation is a chemical treatment on metallic surfaces for cleaning and added corrosion protection. The purpose of passivation is for the removal of “free iron” and other exogenous foreign material from a metallic surface. During passivation a thin transparent oxide layer is formed on the metallic surface. This oxide layer is a protective surface film that inhibits chemical and atmospheric corrosion. Passivation is primarily applied to stainless steels and titanium; however other metals can be passivated either by chemical treatments or other means.

Here at Aotco, we  perform passivation on stainless steels, titanium, Inconel, nitronic 60.

Ask us about all metals.

Most common Passivation specifications are:


AMS 2700



At Aotco, we plate to your specified coating requirements.