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What is Zinc Phosphate?

Professional. Innovative. Defined.

Zinc Phosphate is a chemical conversion coating that enhances corrosion resistance, paint adhesion, and wear protection for steel and iron components.

By forming a uniform, crystalline layer, it creates a strong barrier against rust and oxidation while serving as an excellent primer for subsequent coatings or lubricants.

This process ensures superior paint adhesion, allowing finishes to bond effectively for long-lasting protection. Additionally, its ability to reduce friction and wear makes it ideal for high-performance applications.

As a cadmium-free, eco-friendly pre-treatment, Zinc Phosphate offers a sustainable solution for industrial use while meeting stringent environmental standards.

Zinc Phosphate Process Benefits

At Specialist Metallic Coatings (SMC), our Zinc Phosphate treatment enhances the performance and longevity of metal components by providing superior corrosion resistance, improved adhesion, and reduced friction. This process is essential for industries requiring reliable metal protection and optimal paint bonding.

Advanced Corrosion Resistance

Zinc Phosphate forms a protective crystalline layer that prevents rust and oxidation, making it ideal for automotive, aerospace, and industrial applications.

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Superior Paint & Coating Adhesion

The coating acts as a primer, improving the bond between metal surfaces and subsequent paints, powder coatings, or lubricants for long-lasting performance.

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Reduced Friction & Wear

By creating a textured surface, Zinc Phosphate enhances lubrication retention, reducing metal-on-metal wear in high-friction environments.

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Hydrogen Embrittlement-Free

Unlike some electrochemical coatings, Zinc Phosphate does not introduce hydrogen embrittlement, ensuring structural integrity for high-strength steel components.

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Eco-Friendly & Sustainable

As a cadmium-free, non-toxic process, Zinc Phosphate is a safer and more environmentally friendly pre-treatment for industrial coatings.

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Enhanced Compatibility with Other Coatings

Zinc Phosphate-treated components can undergo additional treatments such as passivation, zinc flake coatings, and duplex coatings to further extend durability and corrosion resistance.

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Strength.

Durability. Excellence.

Strength.

Strength.

Beyond Zinc Phosphate

Advanced Metal Coating Solutions

In addition to Zinc Phosphate coatings, we offer a full range of metal coating solutions to enhance durability and performance. From Sherardizing for uniform corrosion resistance to Passivation for oxidation protection, our coatings ensure long-lasting reliability. Zinc Flake Coatings provide high-performance protection without hydrogen embrittlement, while Barrel Zinc Plating offers a cost-effective solution for small parts. For extreme conditions, Duplex Coatings combine multiple layers for superior durability. At SMC Wolverhampton, we deliver industry-leading solutions to strengthen and protect your critical components.

Applications of Zinc Phosphate

Our Zinc Phosphate coatings are widely used across industries that demand superior corrosion protection, enhanced paint adhesion, and increased durability:

Automotive

Ideal for fasteners, brackets, and structural components, improving paint adhesion and corrosion resistance in harsh conditions.

Rail & Infrastructure

Used on couplings, fasteners, and metal fittings to withstand heavy-duty operations and environmental exposure.

Defence & Aerospace

Provides a reliable base for coatings on precision-engineered components requiring extreme durability.

Oil & Gas

Protects metal parts used in offshore platforms and industrial applications from aggressive corrosion.

Infrastructure & Construction

Applied to fasteners and reinforcements in bridges, tunnels, and large-scale projects for long-term protection.

Mining

Enhances the wear resistance of equipment such as hinge pins and fasteners in demanding underground environments.

Submarine Telecommunications

Used on critical components like bend limiters and connectors to prevent corrosion in deep-sea applications.

Customer Approvals

We provided a high-performance coating solution for a leading blue-chip company, enhancing durability and reducing maintenance. Our quality assurance ensured superior results, strengthening the client’s trust and securing ongoing collaboration.

“Specialist Metallic Coatings delivered exceptional results, reducing maintenance costs and improving durability. Their expertise makes them a trusted partner.”

Enhanced Protection & Additional Treatments

Beyond the standard Zinc Phosphate coating, we offer a range of additional treatments to further enhance corrosion resistance, improve surface performance, and regulate friction. These include specialised sealants, lubricants, paints, and organic (duplex) coatings, providing up to 500+ hours of salt spray resistance.

Key Properties

  • › Superior Corrosion Protection
  • › Improved Paint Adhesion
  • › Uniform Coverage
  • › Increased Wear Resistance

Other Properties

  • › Hydrogen Embrittlement-Free
  • › Matte Surface Finish
  • › Low-Temperature Application
  • › Efficient & Sustainable Process

Next Steps...

Protect Your Components with Industry-Leading Zinc Phosphate Coatings

Enhance durability, corrosion resistance, and surface performance with our advanced Zinc Phosphate solutions. Contact us today to discuss your project requirements and discover how our expertise can benefit your industry.

Innovative. Defined.

Innovative. Defined.

Working around the clock,
around the world,
in all industries.

As industry leaders, Specialist Metallic Coatings provide professional, innovative, and unbiased solutions when it comes to metal coating systems. See below our buiness statisitics.

106,043

Components made in 24 hours

2,043

Partnerships around the world

100

Years of business & experience