Excellent Paint Base and Corrosion Protection

Metal Finishing Group provides Zinc Phosphate Coating services, applying a crystalline phosphate layer to ferrous metals like steel and iron. This chemical conversion coating creates a uniform gray finish, offering superior corrosion resistance and serving as an outstanding primer for subsequent painting, powder coating, or oil impregnation.

Zinc Phosphate coating is chosen when components require a strong adhesion base for organic finishes, enhanced corrosion protection, or a frictional break-in surface. It is widely used in automotive, military, and industrial applications where long-term paint adhesion and resistance to rust are critical. This versatile coating provides a durable, reliable foundation for various finishing systems.

Our Zinc Phosphate Coating Capabilities: Adhesion and Durability

We offer precise Zinc Phosphate Coating services, ensuring a uniform and high-quality deposit for your critical components.

  • Exceptional Paint Adhesion: The porous, crystalline structure of zinc phosphate provides an ideal anchor profile for paints, powder coatings, and other organic finishes, ensuring strong, lasting adhesion.
  • Corrosion Resistance: Offers excellent inherent corrosion protection, which is significantly enhanced when combined with post-treatments like oils, waxes, or paints.
  • Friction Reduction: Can act as an anti-galling layer during initial break-in periods for moving parts, especially when oiled.
  • Uniform Gray Finish: Provides a consistent gray appearance that is suitable for various applications, especially as a primer.
  • Low Operating Temperatures: The application process occurs at moderate temperatures, minimizing potential for part distortion.
  • Minimal Dimensional Change: The coating is relatively thin, ensuring no significant impact on component tolerances.
  • Rack and Barrel Processing: We accommodate both rack and barrel processing methods to suit various part sizes and production volumes.
  • In-house Quality Verification: We conduct coating weight analysis and salt spray testing to ensure compliance with specifications and performance requirements.

Properties of Zinc Phosphate Coating:

Zinc Phosphate coating imparts several key properties that enhance the performance and longevity of components:

  • Superior Primer: Creates an ideal surface for subsequent painting, significantly improving adhesion and preventing chipping or peeling.
  • Robust Corrosion Barrier: Effectively protects ferrous metals from rust and corrosive elements.
  • Friction Control: Contributes to controlled friction and anti-galling properties when parts are oiled.
  • Uniform Coverage: Ensures consistent protection across complex part geometries.
  • Thermal Stability: Maintains its protective properties across a range of operating temperatures.

Applicable Specifications We Adhere To:

Our Zinc Phosphate coating processes consistently meet or exceed crucial industry standards, ensuring the quality and performance of your components. We regularly process to:

  • MIL-DTL-16232 (Type Z, Class 1, 2, or 3)
  • TT-C-490 (Type I)
  • ASTM F1137 (Type Z)
  • And various customer-specific requirements.

Typical Zinc Phosphate Coating Applications:

Zinc Phosphate coating is vital for numerous applications across demanding industries:

  • Automotive Industry: Used extensively for engine parts, chassis components, and undercarriage assemblies as a paint primer and for corrosion resistance.
  • Military and Defense: Applied to weapon systems, ammunition, and various components requiring corrosion protection and a durable paint base.
  • Industrial Equipment: Protects machinery parts, tools, and agricultural equipment from rust and prepares them for painting.
  • Fasteners: Enhances corrosion resistance and ensures strong paint adhesion for bolts, nuts, and washers.
  • Sheet Metal Parts: Provides an excellent preparatory surface for painted or powder-coated sheet metal enclosures and panels.
  • Tube and Pipe: Offers internal and external corrosion protection for various piping systems.

Why Choose Metal Finishing Group for Zinc Phosphate Coating?

Metal Finishing Group is a trusted partner for high-quality Zinc Phosphate coating services. Our commitment to precise application and rigorous quality control ensures a durable, corrosion-resistant, and ideal paint-ready finish for your ferrous components. Partner with us for reliable metal finishing solutions that enhance the longevity and aesthetic appeal of your parts.