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Blue Chromating - Blue Passivating

Product information "Blue Chromating - Blue Passivating"

Blue Chromating – Blue Passivation (SW10025.1)

Chemical Passivation and Surface Finishing for Zinc-Plated Metal Parts


Short Description

The Blue Chromating / Blue Passivation SW10025.1 is a chemical solution for the non-electrolytic treatment of zinc-plated metal parts, producing a blue to dark blue protective passivation layer.
This layer provides effective corrosion protection, enhances the appearance of zinc-plated parts, and gives a professional metallic blue finish.

The treatment is simple to apply in a dip bath without electricity and is suitable as a finish after galvanic zinc plating.


Applications

Blue passivation is used for:

  • Surface finishing of zinc-plated parts

  • Aesthetic blue to dark blue coloring

  • Corrosion protection and surface stabilization

  • Finishing after galvanic zinc plating

  • Suitable for hobby, workshops, restoration, and industrial use

The color ranges from light blue to deep metallic blue, providing a high-quality visual finish.


How it Works (Simple Explanation)

  1. Preparation: Ensure the metal part has a sufficient zinc layer (≥ 2 µm).

  2. Dip: Immerse the zinc-plated part into the blue chromating bath.

  3. Chemical Reaction: Within minutes, a blue passivation layer forms on the surface.

  4. Rinse: After reaching the desired color, rinse the part with water and dry it.

The color intensity can be adjusted by varying the immersion time.


Advantages

  • Easy, non-electrolytic application – no power supply required

  • Chromium(VI)-free – safer and more environmentally friendly than traditional chromating

  • Protects zinc-plated surfaces from corrosion

  • Attractive metallic blue finish for decorative and functional applications

  • Ideal for finishing, restoration, and industrial applications


Technical Information

PropertyDetails / Information
Product typeBlue Chromating / Blue Passivation
ApplicationNon-electrolytic, dip bath
Suitable forZinc-plated metal parts
ColorBlue to dark blue, metallic/iridescent
Minimum zinc thickness≥ 2 µm recommended
Immersion timeA few minutes (depending on desired color)
TemperatureRoom temperature
Chromium(VI)-freeYes

Practical Instructions

  • Ensure the zinc layer is sufficiently thick (≥ 2 µm).

  • Dip parts for several minutes depending on desired color intensity.

  • Rinse thoroughly with water and dry after reaching the desired color.

  • Repeat the process for deeper blue shades.


Safety Instructions

  • Wear gloves, safety glasses, and protective clothing

  • Avoid contact with skin and eyes

  • Rinse immediately with water if contact occurs

  • Use only in well-ventilated areas

  • Do not ingest; keep out of reach of children


Conclusion

The Blue Chromating / Blue Passivation SW10025.1 provides a simple, non-electrolytic method to enhance the appearance of zinc-plated parts while improving corrosion protection.
Its Chromium(VI)-free formulation makes it safe, environmentally friendly, and modern, ideal for hobbyists, restorers, workshops, and professional applications.

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