Yellow Chromate Conversion Coating – Chromium(III) Yellow Passivation for Zinc & Zinc-Plated PartsProfessional Yellow Passivation for Zinc – Gold-Colored Corrosion Protection without Chromium(VI)The Yellow Chromate Conversion Coating / Yellow Passivation is a premium Chromium(III)-based conversion coating developed to produce an attractive golden yellow to brass-colored protective finish on zinc and zinc-plated components. Besides its decorative appearance, the passivation significantly improves the corrosion resistance of zinc surfaces.Unlike the traditional Chromium(VI) yellow chromate process, this modern formulation is based on Chromium(III) and is completely free of highly toxic Chromium(VI). It offers a safer and more environmentally friendly alternative while achieving a finish that closely resembles the classic yellow chromate coating.The resulting coating produces the characteristic golden-yellow, slightly iridescent appearance traditionally found on vintage automotive hardware, fasteners, and mechanical components, making it especially popular for classic car restoration, motorcycle restoration, engineering, and decorative metal finishing.ApplicationsThe Yellow Passivation is ideal for:Zinc-plated componentsZinc surfacesScrewsNutsWashersFastenersBracketsAutomotive partsClassic car restorationMotorcycle restorationMechanical componentsIndustrial partsModel engineeringDecorative metal finishingSuitable for:Restoration specialistsClassic car workshopsElectroplating companiesMetal fabrication workshopsIndustrial usersProfessional workshopsHobby usersProduct BenefitsAttractive golden yellow to brass-colored finishCharacteristic iridescent appearanceChromium(III)-based technologyCompletely free of Chromium(VI)Improved corrosion protectionSimple immersion processNo power supply requiredNo electrodes requiredReady-to-use solutionUniform conversion coatingDecorative and protective finishIdeal as a final treatment after zinc platingHow It WorksThe Yellow Passivation is applied directly after zinc plating.Simply immerse the clean zinc-plated workpiece into the ready-to-use passivation solution.Within only a few minutes, a decorative Chromium(III) conversion coating forms on the surface.Depending on the immersion time, different color shades can be achieved:Light yellowGolden yellowBrass-coloredSlightly iridescent finishThe color intensity can easily be adjusted by shortening or extending the immersion time.Application NotesDuring the conversion coating process, a small amount of zinc is chemically converted. Therefore, the zinc coating should have a minimum thickness of 2 µm before passivation.Once the desired color has been achieved, remove the workpiece from the solution and rinse thoroughly with distilled water.Allow the coating to dry completely to achieve maximum corrosion resistance and optimum color development.Suitable Base MaterialsThe Yellow Passivation is designed exclusively for:Zinc-plated steelZinc surfacesElectroplated zinc coatingsPreviously blue-passivated zinc componentsFreshly zinc-plated workpiecesPreviously blue-passivated zinc parts can also be converted into an attractive golden-yellow finish.Typical ApplicationsFrequently used for:Classic car restorationVintage motorcycle restorationAutomotive restorationScrews and fastenersMechanical engineeringIndustrial componentsDecorative hardwareModel engineeringReplacement partsMetal finishingAvailable VersionsReady-to-use Yellow Chromate Conversion Coating / Yellow PassivationAvailable in various container sizesQuality from Betzmann GalvanikBetzmann Galvanik supplies professional surface finishing solutions for decorative and industrial electroplating applications. Our Chromium(III) Yellow Passivation delivers an authentic golden-yellow finish with excellent corrosion protection while providing a modern, Chromium(VI)-free alternative for professional metal finishing and restoration projects.

Zinc Electrolyte – Reliable Corrosion Protection Through Electroplating The zinc electrolyte is a professional electroplating solution designed for the deposition of protective zinc coatings on metal surfaces. It is suitable for pen plating, brush (tampon) plating, and bath plating, delivering uniform, corrosion-resistant coatings on steel, iron, and copper-based materials. Zinc is one of the most widely used metals in electroplating, specifically applied to protect components from rust, oxidation, and environmental damage. Key Benefits Effective corrosion protection for steel and iron Uniform, bright zinc coatings with good surface finish Mildly acidic, cyanide-free and ammonium-free → easy and safer handling Suitable for all plating methods (pen, brush, bath) Excellent throwing power for complex geometries Ideal for repair work, restoration, and production use Applications Plating of screws, nuts, and metal components Corrosion protection for steel and iron parts Automotive parts and restoration (e.g. classic cars) Mechanical engineering and metalworking Outdoor components (fences, railings, exposed parts) Compatible Plating Methods Pen Plating – localized repair and touch-up Brush / Tampon Plating – flexible use on complex surfaces Bath Plating – uniform coating for batch production Technical Specifications Electrolyte type: mildly acidic Operating temperature: 15 – 60 °C Voltage: Bath plating: 0.5 – 3.5 V Pen / Brush plating: 3 – 7 V Current density: 0.25 – 2 A/dm² Deposition rate: approx. 0.8 µm/min Anodes: zinc or graphite Suitable Base Materials Iron Steel Copper and copper alloys (Note: Aluminum, chromium, or titanium require special pre-treatment.)  Step-by-Step Instructions – How Zinc Plating Works 1. Surface Preparation (Critical Step) Thoroughly clean and degrease the workpiece Remove rust mechanically or chemically Only clean surfaces ensure proper adhesion 2. Setup Workpiece = cathode (negative pole) Anode = zinc or graphite (positive pole) Electrolyte = zinc solution 3. Plating Process Apply direct current Zinc ions migrate to the workpiece Formation of a uniform zinc coating 4. Process Control Reduce current if excessive gas formation occurs Maintain movement during brush plating Keep voltage and temperature stable Why Zinc Is So Effective Zinc acts as a sacrificial metal (anodic protection): It corrodes first and protects the underlying base material. Result: Extended component lifespan Reliable rust protection High resistance to environmental exposure Typical Coating Functions Corrosion protection layer Sacrificial (anodic) protection Base layer for further coatings Functional protective coating Safety Information Avoid contact with skin and eyes Use protective gloves and goggles Ensure proper ventilation Dispose of according to local regulations Conclusion – Essential Electrolyte for Corrosion Protection The zinc electrolyte is one of the most important solutions in electroplating, especially when it comes to durability, corrosion resistance, and cost efficiency. It offers: Reliable rust protection Simple and flexible application Professional results for both beginners and industrial users  Ideal for anyone looking to protect and enhance metal surfaces efficiently and long-term.

Zinc Electrode Ø 6 mm (BMG‑Zinc Electrode) Short Description The Zinc Electrode Ø 6 mm is a high‑purity zinc anode (Zn 99.95 %) designed for electroplating applications where controlled zinc ion release is essential. It promotes uniform, corrosion‑resistant zinc layers and is suitable for bath, pen, and pad plating setups. Product Description This zinc electrode is crafted from unalloyed, high‑purity zinc with a diameter of 6 mm and a practical length of approximately 100–120 mm. Its composition and geometry make it suitable as a standard anode for a range of electrochemical processes, including zinc plating and ion migration studies.  During plating, zinc dissolves in a controlled manner, helping to maintain bath composition and balance metal content, which in turn leads to reliable, homogenous deposit formation. It serves as a sacrificial anode, continuously replenishing the electrolyte with zinc ions while the workpiece is plated. Typical Applications Electroplating and zinc coating operations Bath, pen and pad plating techniques Corrosion protection layers for iron, steel or copper alloys Electrochemical experimentation and teaching Practical use in laboratories, workshops, and production Key Benefits High‑purity zinc (99.95 %) for consistent ion release Efficient plating bath regeneration Versatile use across galvanic methods Uniform coating formation Standard Ø 6 mm size fits most electrode holders  Usage Instructions Preparation: Clean and degrease all surfaces before plating to ensure good adhesion. Setup: Mount the zinc electrode as the anode (positive terminal) and connect the workpiece as the cathode (negative terminal). Electroplating: Operate at appropriate voltage and current density for zinc plating; low voltages and moderate currents typically yield uniform finishes. Maintenance: Over time the electrode surface may change — periodic cleaning or replacement keeps performance optimal. Conclusion The Zinc Electrode Ø 6 mm is a reliable, easy‑to‑use component for zinc electroplating and corrosion‑resistant coatings, suitable for both hobby and professional applications, offering excellent process stability and consistent results.

Zinc Anode / Plate Electrode (SW10071) Short Description The Zinc Anode / Plate Electrode is a flat sacrificial anode made from high-purity zinc (Zn ≥ 99.8 %), designed for electroplating processes that require uniform, protective zinc coatings. It supplies zinc ions steadily into the electrolyte, promoting stable plating conditions and consistent deposit quality.  Product Description This plate electrode is made from high-purity zinc and features a flat, broad geometry (approx. 50 × 80 mm for the M size) with a thickness of about 0.7 mm, making it suitable for plating larger surface areas evenly. As a sacrificial anode, zinc dissolves in a controlled manner, helping to maintain the metal content of the bath and provide stable plating conditions.  The large active surface makes this electrode particularly suitable for bath electroplating with zinc electrolytes, ensuring uniform current distribution and improved coating quality. Typical Applications Electroplating of zinc for corrosion protection Bath plating for decorative or functional zinc finishes Plating of larger components requiring even coverage Workshop, laboratory, and educational electroplating processes Key Benefits High-purity zinc (≥ 99.8 %): supports clean, reproducible results Broad plate design: improves current distribution across surfaces Ideal for zinc electrolyte baths: enhances plating consistency Controlled electrolyte regeneration: maintains bath composition Simple to integrate: suitable for various electroplating setups Usage Instructions Preparation: Thoroughly clean and degrease the workpiece; activate if required. Placement: Position the zinc plate electrode as the anode (positive terminal) in the electrolyte, with the workpiece as the cathode. Plating: Set current and voltage according to the specific zinc electrolyte — typically low volt ranges are used. Maintenance: Clean the electrode periodically to remove oxide buildup and maintain performance. Conclusion The Zinc Anode / Plate Electrode is an efficient sacrificial anode designed for consistent and uniform zinc electroplating. Its large active surface and high material purity make it suitable for hobby, workshop, and professional electroplating applications alike.