Acid Zinc Nickel
Acid Chloride Zinc Nickel (ZnNi) — the Next Generation in Appearance & Corrosion Performance
Acid Chloride Zinc Nickel (ZnNi) represents the latest advancement in high performance electrolytic alloy coatings. Engineered for exceptional corrosion resistance, this next generation formulation outperforms conventional zinc and other protective finishes while delivering superior deposit brightness, uniformity, and adhesion characteristics.
Designed for high volume barrel applications, this acid chloride ZnNi system meets the rigorous demands of automotive, agriculture, construction, and heavy equipment manufacturers seeking reliable, long term protection in harsh operating environments.
Performance & Appearance
Available in both clear or black finishes, the coating provides a bright, decorative appearance ideal for high visibility components. The ZnNi deposit also delivers enhanced abrasion and thermal resistance, ensuring durability in underbody, under hood, and other high temperature or high wear conditions.
With our approved topcoat, the ZnNi finish meets the coefficient of friction requirements for consistent clamp loads for bolted joints.
Corrosion Resistance
- 240 hours to white corrosion (ASTM B117, NSS)
- 1000+ hours to red corrosion
- 63+ cycles of cyclic corrosion performance
These results position acid chloride ZnNi as a best in class solution for extended service life and reduced warranty risk.
Key Advantages
- GMW4700 ZnNi Code G approved (clear and black)
- 12–18% nickel content for optimal alloy performance
- Excellent coverage and uniformity for complex geometry parts
- Consistent friction values per OEM specifications
- Initiates better adhesion on hardened substrates, making it ideal for high-strength fastener applications.
Recommended Applications
- Brake and fuel system components
- Chassis and suspension hardware
- Engine fasteners and under hood hardware
- Interior fasteners requiring decorative appearance
- Wind turbine and coastal exposed fasteners
- Hydraulic fittings and fluid power components
- Structural fasteners and anchors requiring long term humidity resistance
