Zinc Phosphating Conversion Coating

TT-C-490 Type I, MIL-DTL-16232 Type Z

Paramount Metal Finishing is a Zinc Phosphating specialist to TT-C-490 Type I and MIL-DTL-16232 Type Z (Classes 1-3). Zinc phosphating is a chemical conversion coating process applied to steel and other metals. It offers several benefits, particularly in Military and industrial applications.

Benefits of Zinc Phosphating:

1. Corrosion Resistance

• Primary benefit: It enhances the corrosion resistance of metals, especially steel.
• Works as a protective barrier and helps retain paints and oils that further prevent rust.
• Often used as a pretreatment before painting or CARC coatings.

2. Improved Paint Adhesion

• Zinc phosphate coatings create a microscopic, porous surface that allows paint and other coatings to bond more effectively.
• Prevents paint peeling and flaking, especially in harsh environments.

3. Wear and Friction Reduction

• It reduces metal-to-metal contact, improving lubrication retention.
• Useful in parts where sliding or movement occurs (e.g., mechanical assemblies).

4. Base for Further Coatings

• Acts as a solid base layer for additional coatings like CARC paint and powder coating
• Oil or wax-based rust preventatives
• Offers a uniform coating thickness

5. Produces a consistent and even coating, important for:

• Maintaining tolerances
• Aesthetic finish
• Functional reliability
• Cost-Effective and Scalable
• Suitable for mass production and widely used in military, automotive, appliance, and heavy equipment industries.

Zinc phosphating offers is cost effective compared to other high-performance coating methods. It offers an enhanced aesthetic finish with a matte gray appearance that can serve as a final finish in some applications.

Heat Resistance
Zinc phosphate coatings can withstand moderate temperatures, making them useful in components exposed to heat cycles.

Applications:

• Military and industrial equipment (TT-C-490 Type I, MIL-DTL-16232 Type Z)
• Fasteners and hardware
• Automotive parts (chassis, body panels)
• Tools and mechanical components

PARAMOUNT METAL FINISHING also offers Stress Relief and Hydrogen Embrittlement Relief (HER) when required.

ZINC PHOSPHATING LARGE PARTS AND NOT SO LARGE PARTS

PARAMOUNT OFFERS ZINC PHOSPHATING for parts up to 11 feet in length (tank size 12 feet x 5 feet high).

Paramount Metal Finishing is a specialist in zinc phosphating to TT-C-490 Type I and MIL-DTL-16232 Type Z conversion coatings. We offer chain on edge and overhead conveyor painting and is an integrated coating applicator to ASTM, AMS and Military Specifications. We have capabilities to Plate, Anodize, Hard Coat Anodize, Sanchem, Conversion Coat, Paint, Powder Coat and Dry Film Lube in one location.

Visit our website www.pmf1.com or email us at sales.paramount@pmfnj.com Tel: 908-862-0772

NADCAP – Aerospace Quality Systems (AC7004)

NADCAP – Chemical Processing

High Corrosion Resistant Alternative to Cadmium
AMS 2417 ASTM B841 ASTM F1941

Paramount Metal Finishing offers ZINC NICKEL plating to AMS 2417 and ASTM B841 on large parts up to 9 feet in length. Zinc nickel plating as the name suggests is a co-deposited coating of zinc and nickel.

Zinc Nickel is a high performance finish that offers maximum corrosion resistance especially for components used in severe environments. The zinc and nickel alloying creates a distinctive composition that will corrode at a much slower rate than zinc. The combination of approximately 10-15% nickel and the remainder zinc, can offer up to 10X the protection of traditional zinc plating.

Paramount Metal Finishing Zinc Nickel plating benefits:

• Maximum corrosion resistance
• Salt Spray 500+ hours
• RoHS Compliant
• Increased part life span
• Alternative to cadmium and hot dip galvanizing
• Trivalent, Hexavalent and Black Chromates available
• Parts up to 9 feet in length

Applications:

• Oil and Gas
• Hydraulic Components
• Railway
• Agricultural Machinery
• Automotive Industry
• Electrical Transmission

Paramount Metal Finishing processes and meets to the following specifications:

• AMS 2417
• ASTM B841, ASTM F1941

Paramount Metal Finishing is a specialist in zinc nickel plating and is an integrated coating applicator to ASTM, AMS and Military Specifications. We have capabilities to Plate, Anodize, Hard Coat Anodize, Sanchem, Conversion Coat, Paint, Powder Coat and Dry Film Lube in one location.

Visit our website www.pmf1.com or email us at sales.paramount@pmfnj.com Tel: 908-862-0772

None chromate and None Chrome Conversion Coating

Sanchem on Zinc, Aluminum and Magnesium

Paramount Metal Finishing applies Sanchem conversion coatings on zinc, magnesium and aluminum. Sanchem is a RoHS compliant chromate-free conversion coating that leaves an electrically conductive clear to gold protective surface treatment. Sanchem is an excellent preparation of aluminum, magnesium or zinc substrates for paint, powder coating and e-coat as well as adhesives. Sanchem can produce far better coating adhesion comparable to hexavalent chromate conversion coatings.

Sanchem is a high-performance conversion coating that offers:

• Clear or gold RoHS compliant coating
• Chromate free
• Excellent corrosion resistance
• Electrically conductive film on wrought aluminum, aluminum castings, magnesium and zinc as well galvanized steel.
• Excellent pretreatment for paint
• High-temperature applications
• Salt Spray 168 hours on aluminum castings
• Cost-effective coating
• Used in sensitive military and medical applications.

Paramount Metal Finishing applies Sanchem conversion coatings to Zinc, Aluminum, and Magnesium cast or wrought substrates. Paramount Metal Finishing can coat Sanchem treated substrates with various paints, powder coatings and dry-film lubricants.

Visit our website www.pmf1.com or contact us at 908-862-0772. For an online quotation e-mail us a drawing with RFQ details to sales.paramount@pmfnj.com.

The annual global cost of corrosion is $2.5 trillion, equivalent to 3.4% of the worldwide GDP. In the US, the annual cost of corrosion surged past $1 trillion, affecting our national GDP by 6.2%. Corrosion affects infrastructure, transportation, production & manufacturing, utilities, and the federal government.

Chemical based methods to control the detriments of corrosion include:

• Metallic plated deposits with optional organic / chromate top coats.
• Corrosion inhibitor films.
• Non metallic parts in the form of polymers and plastics.
• Organic coatings such as paint & powder coat.

Per the values given, the traditional methods to control corrosion fall short, In fact, far short.

In a major development to minimize corrosion, thereby improving field service life of parts in challenging conditions, Zinc – Nickel alloy (ZN-Ni) plated finishes provide significant benefits. These include not only corrosion protection, but improved hardness, service life, and wear resistance.

Straight zinc plated deposits provide sacrificial corrosion protection over steel substrates. It is accomplished by the zinc deposit’s anodic potential to corrode first, protecting the steel base. This has been an industry accepted application for decades.

Paramount Metal Finishing offers a unique, significant improvement to corrosion protection. It is the Zinc – Nickel alloy deposit (Zn-Ni), composed of 85% Zinc & 15% Nickel. The focus of corrosion protection is immediately obvious by results of the ASTM B-117 Salt Spray Testing, on equivalent deposit thicknesses.

Salt Spray Results for Electroplated Deposits

The corrosion protection afforded by a deposit of Zn-Ni significantly outperforms straight Zinc by 2.7:1 (white corrosion) and significantly by 4.9:1 to red corrosion.

The Zn-Ni alloy deposit consists of 85% Zinc and 15% Nickel. Deposits normally range in thickness of 8-14 um, followed by a trivalent chromate of 0.06-0.1 um thickness.

Zn-Ni deposits approach 450 Vickers hardness. By comparison, Zinc deposits fall below 150 Vickers.

Zn-Ni deposits resist thermal stresses approaching 200 degC (392 degF) compared to Zinc deposits at only 120 degC (248 degF.

Other outstanding features of the Zn-Ni deposit include:

• RoHS and REACH compliant
• Meets requirements of ELV Directive
• Post plating chromates applied are RoHS compliant
• Excellent replacement for Cadmium plated deposits (eliminates possible carcinogenic exposure to Cadmium)
• Minimal tendency towards hydrogen embrittlement

Paramount Metal Finishing applies Zn-Ni to a variety of commercial and military parts, including:  automotive, power generation, fasteners, construction, agricultural equipment, firearms, aerospace, lawn & garden, transportation, and heavy equipment.

Finishing capabilities range from standard parts to larger sizes and dimensions,