Passivation

Seminole Metal Finishing offers passivation of stainless steel. Some stainless steels are more corrosion    resistant than others, depending on the amount of iron in the base material.300 series stainless steel, contains  more chromium and nickel steel, and is more corrosion resistant, but is not as hard as other stainless  steelswith a higher content of iron.

Stainless steel is naturally a passive material. However, during the machining and manufacturing process, the  stainless is activated by the cutting tools, welding, grinding and drilling processes.

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The filings left on the part contain bits of iron which in effect starts the corrosion process on the surface of the material. Passivation improves the materials’ corrosion resistance by removing iron and other undesirable foreign materials from the surface of the stainless steel and leaves a passive film on the surface of the metal. Passivation usually does not change the appearance of the base material.

The specifications for different types of passivation are ASTM-A-380 and ASTM-A-967. QQ-P-35 has been cancelled and replaced with ASTM-A-967.

Additional Passivation Info
Looking for Do-It-Yourself Metal restoration? Seminole Metal Finishing carries a line of products from KBS that offers great solutions from getting rid of the rust to keeping it from coming back. We use KBS on everything from painting the metal siding on our building, to removing rust from the rails and other metal fixtures. Visit our e-store and use our secure checkout feature to order online, or call us 407-332-8949 (toll free 1-800-332-8949)