Hastelloy Passivation

The presence of exogenous surface contaminants may adversely affect Hastelloys natural corrosion-resistant properties. Surface contaminants, including grease, dirt, iron, and other metallic particles are inherent to the metal fabrication process. During the passivation of Hastelloy, the surface of a part is chemically treated by a mild oxidant. The chemical passivation treatment removes free iron and other foreign contaminants, allowing the Hastelloy to perform and resist corrosion as it is engineered to do.