Enhanced Corrosion and Paint Adhesion for Demanding Conditions

Metal Finishing Group provides Zinc-Iron Clear Plating services to the SC 3 level of supplementary treatment, offering significantly enhanced corrosion protection with a clean, transparent finish for steel and iron components. This advanced alloy coating (zinc-iron) is followed by a clear chromate conversion coating, precisely engineered for greater durability against harsh environmental elements.

Zinc-Iron Plating to SC 3 is chosen when components require superior resistance against both white corrosion (alloy oxidation) and red rust (iron oxidation) in more demanding environmental conditions. It also provides an excellent base for paint. It is ideal for critical automotive fasteners, robust industrial hardware, and parts requiring long-term durability and reliable paint adhesion without a colored finish. This robust coating provides strong, lasting protection against aggressive environmental factors.

Our Zinc-Iron Clear Plating – SC 3 Capabilities: Superior Protection and Optimized Adhesion

We offer precise Zinc-Iron Clear Plating services to SC 3 specifications, ensuring a uniform and high-quality deposit for your critical components.

  • Elevated Corrosion Protection: Engineered to provide significantly higher corrosion resistance than SC 1 or SC 2 finishes, extending the lifespan of parts exposed to harsher conditions.
  • Superior Paint Adhesion: The unique morphology of the zinc-iron deposit and subsequent chromate provides an exceptional anchor profile for paints, powder coatings, and other organic finishes, ensuring strong and lasting adhesion.
  • Clear Chromate Finish: Applies a transparent chromate conversion coating over the zinc-iron, enhancing corrosion resistance while preserving the alloy’s natural metallic look.
  • Sacrificial Protection: The zinc-iron alloy layer actively corrodes before the base metal, safeguarding steel and iron components from rust even under challenging conditions.
  • Good Electrical Conductivity: Maintains favorable electrical properties, suitable for many electrical components.
  • 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 rigorous salt spray testing to confirm compliance with SC 3 corrosion resistance requirements and adhesion tests to ensure compatibility with topcoats.

Properties of Zinc-Iron Clear Plating – SC 3:

Zinc-Iron Clear Plating to SC 3 imparts several key properties that enhance the performance and longevity of components:

  • Extended Corrosion Protection: Provides a substantial barrier against both white corrosion and red rust, capable of withstanding prolonged exposure in challenging environments.
  • Excellent Paint Base: Creates an ideal surface for subsequent painting, significantly improving adhesion and preventing chipping or peeling.
  • Cost-Effective High Performance: Delivers a reliable and economical solution for advanced corrosion requirements.
  • Clean, Transparent Aesthetic: Offers a professional and appealing metallic appearance without adding color, preserving the component’s original look.
  • Reliable Electrical Conductivity: Maintains electrical continuity for functional components.

Applicable Specifications We Adhere To:

Our Zinc-Iron Clear Plating – SC 3 processes consistently meet or exceed crucial industry standards, ensuring the quality and performance of your components. We regularly process to:

  • ASTM B633 (Type V, SC 3): This specification defines electrodeposited coatings of zinc-iron alloy on iron and steel. Type V refers specifically to zinc-iron with a chromate conversion coating. SC 3 designates a minimum corrosion resistance for zinc-iron coatings, typically requiring specified hours to white corrosion and 120 hours to red rust in a neutral salt spray test.
  • And various customer-specific requirements for enhanced corrosion protection and paint adhesion.

Typical Zinc-Iron Clear Plating – SC 3 Applications:

Zinc-Iron Clear Plating to SC 3 is vital for numerous applications across various industries:

  • Automotive Industry: Used for fasteners, chassis components, fuel lines, and under-hood parts requiring superior paint adhesion and enhanced corrosion resistance.
  • Industrial Hardware: Protects machine components, tools, and brackets that will be painted or powder coated, particularly in environments with moderate to high humidity.
  • Fasteners: Enhances corrosion resistance and ensures strong paint adhesion for bolts, nuts, and washers exposed to harsher conditions.
  • Electronic Components: Provides robust corrosion protection and conductivity for various electronic parts and enclosures that require painting or a discreet finish.
  • Construction: Used for components that require both corrosion resistance and a durable paint or powder coat in challenging environments.

Why Choose Metal Finishing Group for Zinc-Iron Clear Plating (Type V) – SC 3?

Metal Finishing Group is a trusted partner for high-quality Zinc-Iron Clear Plating to SC 3 specifications. Our commitment to precise application and rigorous quality control ensures a durable, highly corrosion-resistant, and ideal paint-ready finish for your steel and iron components. Partner with us for reliable metal finishing solutions that enhance the longevity, performance, and aesthetic integration of your parts.