Zintek 200 Coating for High-Performance Fasteners

Zintek 200 is a high-performance inorganic silver zinc flake basecoat designed for critical fasteners used in harsh industrial and offshore environments. Its unique zinc-aluminum flake structure provides exceptional cathodic protection, high corrosion resistance, and excellent adhesion—while eliminating the hydrogen embrittlement risks commonly associated with electroplating.

Why Choose Zintek 200 Zinc Flake Coating?

1. Outstanding Corrosion Protection

Zintek 200 forms a conductive zinc-aluminum layer that provides strong cathodic protection to steel substrates. Typical performance highlights include:

≥ 720–1500 hours NSS (ISO 9227) depending on dry film thickness
Typical coating thickness 8–15 μm
Excellent barrier and sacrificial protection

This makes Zintek 200 ideal for fasteners operating in offshore platforms, chemical plants, power generation facilities, and automotive chassis components.

2. No Hydrogen Embrittlement

Unlike electro-galvanizing or hot-dip galvanizing, Zintek 200 is a non-electrolytic coating system, ensuring:

No hydrogen absorption during processing
Safe usage on 10.9 / Grade B7 / Grade L7 / Grade 7 high-strength alloys
Sustained mechanical reliability even under high tensile loads

3. Environmental Compliance

Zintek 200 is free from regulated substances such as:

Hexavalent chromium (Cr(VI))
Cadmium, cobalt, nickel, and lead
Available in non-PFAS version

This ensures compliance with RoHS, REACH, ELV, AS9100, and multiple global environmental standards.

4. Excellent Mechanical and Surface Performance

High impact resistance
Strong adhesion even on thread profiles
High coverage efficiency (up to 20 m²/kg at 10 μm)
Uniform silver metallic appearance

Zintek 200 Coated Fastener Product Series

1. ASTM A194 Grade 7 Heavy Hex Nuts

A194 Grade 7 nuts are widely used in high-temperature and low-temperature pressure systems, including valves, flanges, heat exchangers, and cryogenic pipelines.

Benefits with Zintek 200 coating:

Long-term rust protection in downstream oil & gas applications
Safe for high-strength alloy steels (chromium-molybdenum alloy)
Improved assembly reliability in corrosive environments

2. ASTM A194 Grade 2H Heavy Hex Nuts

A194 2H nuts are the industry standard for petrochemical, power generation, and construction applications.

Zintek 200 advantages:

Superior NSS performance for outdoor exposure
Stable friction values when paired with topcoats
No Cr(VI), suitable for global EPC projects

3. ASTM A320 L7 Threaded Studs

L7 studs are used for low-temperature and cryogenic pressure systems.

Why combine L7 studs with Zintek 200:

Reliable corrosion protection at low temperatures
No coating-induced hydrogen embrittlement
Excellent coating uniformity on long-thread components

4. ASTM A193 B7 Threaded Studs

B7 studs are the most commonly used fasteners in refinery, pipeline, boiler, and chemical equipment manufacturing.

Benefits of Zintek 200 on B7 fasteners:

Extended service life in harsh environments
Consistent torque-tension behavior with compatible topcoats
High resilience during repeated assembly/disassembly

Typical Applications of Zintek 200 Coated Fasteners

Petrochemical pipelines & flanges
Offshore drilling structures
Power station and boiler equipment
Pump Valve
Chemical process systems
Automotive chassis & braking components
Wind energy and heavy machinery

Conclusion

Zintek 200 offers a robust, environmentally compliant, and long-life corrosion protection solution for high-strength industrial fasteners. This coating system ensures superior reliability in extreme environments. By choosing Zintek 200 coated fasteners, industries can significantly reduce maintenance costs, extend equipment life, and improve operational safety.

Welcome to Contact IIIBEAR

At IIIBEAR, we are committed to providing reliable, engineering-grade fastener solutions for demanding industrial environments.
If you are looking for Zintek 200 coated nuts, bolts, or stud bolts—or you require a customized fastener solution—our technical and sales teams are ready to support you.

We can help you evaluate material grades, coating systems, torque requirements, corrosion-resistance levels, and industry-specific standards to ensure the fasteners match your exact application needs.