Durable Protection with a Distinctive Finish

Metal Finishing Group provides Zinc Black Plating services, applying a protective zinc coating followed by a black chromate conversion coating. This process creates a uniform, deep black finish on steel and iron components, offering significant corrosion resistance and an attractive, non-reflective appearance.

Zinc Black plating is chosen when components require excellent sacrificial corrosion protection, a distinct dark color for aesthetic or identification purposes, and good electrical conductivity. It is ideal for automotive parts, military equipment, and various industrial applications where both performance and a specific visual finish are critical. This durable coating provides reliable protection against rust and environmental elements, with various levels of supplementary treatment available to meet diverse corrosion requirements.

Our Zinc Black Plating Capabilities: Performance and Aesthetics

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

  • Sacrificial Corrosion Protection: The zinc layer corrodes before the base metal, actively protecting steel and iron components from rust.
  • Black Chromate Finish: Applies a rich, uniform black chromate conversion coating over the zinc, providing a distinct aesthetic and enhanced corrosion resistance.
  • Supplementary Treatment Levels: Various levels of supplementary treatment are available to achieve different corrosion resistance performance, tailored to your application’s environmental demands. These are typically defined by industry standards (e.g., SC 1, SC 2, SC 3, SC 4).
  • Good Electrical Conductivity: Maintains favorable electrical properties, suitable for many electrical components.
  • Non-Reflective Appearance: The matte black finish is ideal for applications where glare reduction is desired.
  • Rack and Barrel Plating: We accommodate both rack and barrel plating methods to suit various part sizes and production volumes.
  • Thickness Control: We achieve precise plating thicknesses to meet specific design and performance requirements.
  • In-house Quality Verification: We conduct salt spray testing to confirm the corrosion resistance performance of the coated parts.

Properties of Zinc Black Plating:

Zinc Black plating imparts several key properties that enhance the performance and longevity of components:

  • Excellent Corrosion Resistance: The combination of zinc and black chromate provides robust protection against rust and environmental factors, with varying levels of protection based on supplementary treatment.
  • Distinct Black Finish: Offers a professional and aesthetically pleasing dark appearance.
  • Reduced Light Reflection: The matte black surface minimizes glare, beneficial for specific equipment and visual needs.
  • Cost-Effective Protection: Provides a reliable and economical solution for enhancing the durability of ferrous metals.
  • Good Adhesion for Topcoats: Can serve as a base for subsequent organic coatings if desired.

Applicable Specifications We Adhere To:

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

  • ASTM B633 (Type II): This specification defines electrodeposited coatings of zinc on iron and steel. Type II refers to zinc with a black chromate conversion coating. We offer treatments designed to meet various levels of supplementary corrosion resistance (e.g., SC 1, SC 2, SC 3, SC 4), which are detailed on their respective dedicated pages.
  • MIL-DTL-16232 (for some applications, depending on class/type relevant to black chromate over zinc phosphate)
  • And various customer-specific requirements.

Typical Zinc Black Plating Applications:

Zinc Black plating is vital for numerous applications across various industries:

  • Automotive Industry: Used for fasteners, brake components, chassis parts, and various under-hood and visible components.
  • Military and Defense: Applied to firearm components, hardware, and equipment for corrosion protection and glare reduction.
  • Industrial Machinery: Protects machine components, tools, and brackets from rust.
  • Fasteners: Enhances corrosion resistance and provides a uniform black finish for bolts, nuts, and washers.
  • Consumer Goods: Used for hardware, fixtures, and other items requiring a black finish and durability.
  • Electronic Enclosures: Provides corrosion protection and a non-reflective aesthetic for housings.

Why Choose Metal Finishing Group for Zinc Black Plating?

Metal Finishing Group is a trusted partner for high-quality Zinc Black plating. Our commitment to precise application and rigorous quality control ensures a durable, corrosion-resistant, and aesthetically pleasing black finish for your steel and iron components, with varying levels of protection to suit your specific needs. Partner with us for reliable metal finishing solutions that enhance the longevity and performance of your parts.