The Ultimate Guide to Dacromet Coating: Superior Protection for Fasteners and Construction Components

Introduction: What Is Dacromet Coating and Why Is It Essential?

Metal parts, especially fasteners and construction components, are highly susceptible to rust and corrosion, leading to costly replacements and repairs. Traditional coatings often fail under harsh conditions. Dacromet coating offers unmatched corrosion resistance, making it a top choice for industries like construction and automotive.

Read on to discover how this innovative coating technology can extend the lifespan of your parts and reduce long-term maintenance costs.

What Is Dacromet Coating?

The Science Behind Dacromet Coating

Dacromet is an aqueous-based coating composed of zinc flakes, aluminum powder, and inorganic compounds. It creates a multi-layer protective barrier, significantly enhancing corrosion resistance for fasteners and construction hardware.

How It Works

1. Immersion & Rotation – Parts are immersed in the coating solution and rotated for uniform coverage.

2. Curing Treatment – The coating is cured at high temperatures, forming a 7-8 µm thick protective layer.

3. Protection Mechanism:

• Zinc Flakes – Act as a sacrificial anode, preventing corrosion.

• Aluminum Flakes – Form a durable barrier against environmental elements.

• Inorganic Binder – Secures the metal particles for long-lasting protection.

Types of Dacromet Coatings: Which One Is Right for You?

Standard Dacromet Coating (with Hexavalent Chromium)

• 310/320 – Ideal for fasteners and spring components in construction applications.

• 500 – Suitable for high-performance automotive and wind energy parts.

Geomet Series (Chromium-Free, Eco-Friendly Options)

• 720 – Excellent for fasteners and automotive parts.

• 321 – Provides enhanced reliability for construction hardware.

• 500 – Self-lubricating, ideal for fasteners in construction projects.

• 320/360 – High-temperature resistance, suitable for automotive and construction parts.

Dacromet Coating Process: The Key to Superior Durability

Core Materials Used in Dacromet Coating

• Zinc Flakes – The primary corrosion-resistant material.

• Aluminum Powder – Enhances the coating’s protective barrier.

• Inorganic Binder – Improves adhesion and coating integrity.

• Additives & Water Carrier – Ensure even coverage, particularly for fasteners.

Step-by-Step Process for Dacromet Coating

1. Surface Pre-Treatment

• Cleaning and contaminant removal.

• Sandblasting or chemical treatment for better adhesion.

2. Coating Application

• Immersion in the coating solution with controlled rotation.

• Air drying before curing.

3. Curing Process

• Heated to approximately 300°C for optimal curing.

• Controlled cooling to prevent cracking.

Key Benefits of Dacromet Coating: Why It’s a Game Changer

Unmatched Corrosion Resistance

• Withstands 1,000+ hours of salt spray testing.

• Prevents red rust formation, ideal for extreme conditions.

Enhanced Durability and Longevity

• Dacromet-coated parts can last 20+ years.

• High adhesion and wear resistance extend component lifespan.

Impressive High-Temperature Performance

• Stable up to 300°C, making it suitable for construction and automotive parts.

Environmentally Friendly

• Zero VOC emissions, making it safe for eco-conscious projects.

• REACH and RoHS compliant for responsible manufacturing.

Lower Maintenance Costs

• Self-healing properties prevent scratches from compromising protection.

• Long-lasting durability reduces upkeep costs.

Limitations of Dacromet Coating: What You Should Know

• Limited Color Options – Usually available in a gray matte finish.

• Impact Sensitivity – Excessive force may damage the coating.

• Longer Curing Time – Takes longer than traditional coatings.

• Thickness Control – Intricate shapes may receive uneven coverage.

• Higher Initial Cost – Although expensive upfront, it provides long-term savings.

Dacromet Coating Applications: Where It Makes a Difference

Automotive Industry

• Brake system components

• Suspension parts

• Engine and chassis fasteners

• Fuel system components

Aerospace and Military

• Structural fasteners

• Landing gear components

• Ground support equipment

• External hardware

Construction and Infrastructure

• Bridge components

• Road barriers

• Construction fasteners

• Structural supports

Marine Industry

• Deck hardware

• Offshore platforms

• Container components

• Port equipment

Dacromet Coating vs. Electroplated Zinc: A Side-by-Side Comparison

Conclusion: Make the Smart Choice for Your Construction and Automotive Parts

Dacromet coating provides unmatched protection, durability, and environmental benefits, making it the best choice for fasteners and construction hardware exposed to harsh environments. Despite a higher upfront cost, it delivers lower maintenance costs and longer service life, making it a wise investment for industries like construction, automotive, and aerospace.

If you want to learn more about Dacromet coating and how it can benefit your construction components, contact us today!

Frequently Asked Questions (FAQs)

How long does Dacromet coating last?

Dacromet-coated parts typically last 20-25 years, depending on environmental exposure and usage.

Can Dacromet coating be applied to all metals?

It is most effective on steel and iron. Other metals may require special surface treatments for better adhesion.

Is Dacromet coating environmentally safe?

Yes, Dacromet coating is zero VOC, REACH, and RoHS compliant, making it a safe choice for eco-friendly construction applications.

Looking for high-performance protection for your construction fasteners and industrial parts? Get in touch with us today!