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) Preparation: Ensure the metal part has a sufficient zinc layer (≥ 2 µm). Dip: Immerse the zinc-plated part into the blue chromating bath. Chemical Reaction: Within minutes, a blue passivation layer forms on the surface. 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 / InformationProduct typeBlue Chromating / Blue PassivationApplicationNon-electrolytic, dip bathSuitable forZinc-plated metal partsColorBlue to dark blue, metallic/iridescentMinimum zinc thickness≥ 2 µm recommendedImmersion timeA few minutes (depending on desired color)TemperatureRoom temperatureChromium(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.

Zinc Electrolyte BMG-098.4 Mildly acidic zinc electrolyte for electroplating and corrosion protection Short Description The Zinc Electrolyte BMG-098.4 is an electroplating solution designed for galvanic zinc plating of metal surfaces. It allows steel and iron parts to be coated directly with a uniform, corrosion-protective zinc layer, making it ideal for repair work, automotive parts, fasteners and general corrosion protection for indoor and outdoor applications. The electrolyte is mildly acidic, cyanide-free and ammonium-free, easy to use and suitable for tank plating as well as brush / pen plating. What is this electrolyte used for? With this zinc electrolyte you can: protect steel and iron parts against corrosion and rust zinc-plate screws, fasteners and metal components repair damaged or worn zinc coatings protect outdoor components such as fences, railings and machine parts plate parts that cannot be removed, using brush or pen plating techniques It is suitable for both hobby applications and professional workshops. How does zinc plating work? (simple explanation) In galvanic zinc plating, zinc is deposited onto a metal surface using direct electrical current: The workpiece is thoroughly cleaned, degreased and derusted It is connected as the cathode (negative pole) A suitable zinc or graphite anode is connected as the positive pole When current is applied, zinc ions migrate from the electrolyte and form a protective zinc coating on the surface Proper surface preparation is essential to ensure good adhesion and long-lasting corrosion protection. Advantages of Zinc Electrolyte BMG-098.4 Easy to use for beginners and professionals Mildly acidic, cyanide-free and ammonium-free Produces bright, uniform zinc coatings Suitable for tank plating and brush / pen plating Good throwing power, even on complex geometries Ideal for repair work and corrosion protection Technical Parameters The following values represent typical operating parameters for zinc electroplating: PropertyValue / RangeElectrolyte typeMildly acidic zinc electrolytepH rangeAcidic (low pH)Operating temperature15–60 °CVoltage (tank plating)approx. 0.5–3.5 V (recommended ~2 V at 10 cm distance)Voltage (brush / pen plating)approx. 3–7 V (recommended ~5 V)Current densityapprox. 0.25–2 A/dm² (up to ~5 A/dm² with agitation)Deposition rateapprox. 0.8 µm/min at 2 A/dm² and 20 °CAnode materialZinc or graphiteSuitable substratesSteel, iron, copper and copper alloysNot suitable without pretreatmentAluminum, chromium, titanium Practical Application Notes Surface preparation: Clean, degrease and remove rust thoroughly Mechanical pretreatment is recommended for heavily corroded parts Tank plating: Operate within recommended voltage and current range Excessive gas formation indicates too high current Brush / pen plating: Keep the brush or pad moving evenly across the surface Safety Information Zinc electrolytes contain acidic components and zinc salts and must be handled with care: Wear chemical-resistant gloves, safety goggles and protective clothing Avoid contact with skin and eyes In case of contact, rinse immediately with plenty of water Use only in well-ventilated areas Do not discharge into drains or the environment Keep out of reach of children Always observe the Safety Data Sheet (SDS) and hazard labeling. Scope of Delivery Zinc Electrolyte BMG-098.4 Quantity according to selection Conclusion The Zinc Electrolyte BMG-098.4 is a reliable and versatile electroplating solution for producing bright, uniform and corrosion-resistant zinc coatings. When used correctly, it delivers professional results for both beginners and experienced users and is ideal for repair work, corrosion protection and general metal finishing.