Passivation

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Passivation is a chemical treatment process used to enhance the corrosion resistance of stainless steel and other corrosion-resistant alloys. During the process, free iron and surface contaminants are removed from the metal, allowing the material's natural protective oxide layer to form and strengthen. Unlike plating or coating processes, passivation does not add material to the surface; instead, it improves the metal's inherent ability to resist corrosion, oxidation, and environmental attack.

At Kion Tech, passivation is commonly performed on components used in aerospace, defense, medical, semiconductor, and commercial applications where cleanliness, corrosion resistance, and long-term reliability are critical. The process helps extend component life, improve performance in demanding environments, and ensure compliance with customer and industry specifications. Through controlled processing and rigorous quality standards, Kion Tech delivers passivated finishes that provide enhanced protection without altering part dimensions or mechanical properties.

  • QQ-P-35

    Citric and Nitric: ASTM A697

    All Stainless Steels: AMS 2700

  • $65.00

  • Citric vs. Nitric Passivation

    Citric and nitric passivation both improve the corrosion resistance of stainless steel by removing surface contaminants and strengthening the metal's protective oxide layer. Citric passivation is a more environmentally friendly option, while nitric passivation is often specified for applications requiring compliance with certain aerospace, defense, and military standards. The appropriate method depends on customer specifications and application requirements.

    • Improved Corrosion Resistance – Strengthens the metal's natural protective oxide layer.

    • Removes Surface Contaminants – Eliminates free iron and other impurities that can cause corrosion.

    • No Dimensional Change – Does not add measurable thickness to the component.

    • Enhanced Product Longevity – Helps extend service life in harsh environments.

    • Supports Industry Compliance – Commonly specified for aerospace, medical, and defense applications.

    • Maintains Material Integrity – Preserves the original properties of the base metal.

    • Stainless Steel Components

    • Aerospace Hardware

    • Medical Devices

    • Semiconductor Equipment

    • Fasteners & Fittings

    • Precision Machined Parts

    • Fluid Handling Components

    • Defense Systems