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Passivation
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It should undergo a passivation stage to ensure that fabrication or component corrosion resistance is optimized before delivery. Employing high oxidizing agents all surfaces are either sprayed or immersed in a solution that oxidizes the Chromium. This rapidly forms the inert layer on the material and creates the critical surface property relied upon in service. Several passivation methods are employed depending on the Alloy, pre-treatment, and type of application. ISO 15730 and ASTM A967 Stainless Steel Passivation specification details each process in depth.
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