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    FAQ > There's no such thing as a dumb Question! > What is the difference between Electropolishing and Passivating?

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    Passivation is a non-electrolytic process which removes iron, iron oxides and other impurities from the surface, rendering stainless steel more rust-proof.

    Electropolishing is an electrolytic process which dissolves small surface asperities. What remains is an ultra-smooth, ultra-clean surface. Friction is reduced and materials are further prevented from sticking. Electropolishing is a very effective method of passivation ,exceeding that of nitric acid passivation, so that if a part is electropolished it needs no supplemental passivation. Visually, electropolishing produces a bright, polished, highly reflective surface finish while passivating produces a matt, grey uniform finish.

    Last updated on September 23, 2009 by Chilco