Passivation is a process to assure removal of free iron or other less noble contaminants from the surfaces of corrosion resistant steel parts. The chemical treatment leads to a protective oxide layer that is less likely to chemically react with air and cause corrosion. Passivation is a post-fabrication best practice for newly-machined stainless steel parts and components, Benefits include chemical film barrier against rust, extended life of product, removal of contamination from product surface and reduced need for maintenance.