Chemical Conversion Coating

MIL-DTL-5541-compliant chemical conversion coating delivering corrosion resistance, electrical conductivity, and surface protection for aerospace, medical, firearms, and OEM applications throughout the Northeast and nationwide.

A gold-colored, circular starburst seal with the acronym

Chemical Conversion Coating

MIL-DTL-5541-compliant chemical conversion coating delivering corrosion resistance, electrical conductivity, and surface protection for aerospace, medical, firearms, and OEM applications throughout the Northeast and nationwide.

A gold-colored, circular starburst seal with the acronym

Chemical Conversion Coating Services in Connecticut & the Northeast

Specification-driven chromate conversion coating for aluminum components, serving aerospace, medical, firearms, and OEM manufacturers across the U.S.

A white speech bubble containing a dollar sign symbol, centered inside a dark red circle with a thin gold border.

Request a Quote

For more information or to get a free quote, call us at (860) 347-7434 or complete the contact form.

A person wearing a beanie and protective glove holds a rack of small metal parts over steam in a workshop.

Sands of Time

Stark beauty of desolate dunes
Button
A person using a handheld PosiTector gauge to measure the coating thickness on a black metal plate.

Faces of Humanity

Portraits of people from around the globe
Button
A person wearing a maroon beret and jacket places a shipping label on a stack of cardboard boxes in a storage facility.
A person wearing a beanie drives an orange forklift inside a warehouse, carrying a pallet wrapped in plastic.

Nature's Symphony

Breathtaking colors of our planet
Button
A collection of various industrial metal components and parts, including a gold-colored bracket, sphere, and cylinders.

Beyond Boundaries

Visual odyssey across continents
Button
A person in a maroon shirt and beanie uses a gloved hand to hang a metal rack with small parts in a steaming workshop.

Sands of Time

Stark beauty of desolate dunes
Button
A person holds a digital thickness gauge measuring a black metal plate on a wooden workspace.

Faces of Humanity

Portraits of people from around the globe
Button
A worker in a maroon top and beret labels cardboard boxes in a warehouse storage area.
A worker sits in an orange forklift, carrying a pallet wrapped in plastic inside a warehouse.

Nature's Symphony

Breathtaking colors of our planet
Button

Benefits of Chemical Conversion Coating

Chemical Conversion Coating delivers measurable performance advantages for components used in aerospace, medical, firearms, and OEM applications—making it a preferred finishing process for high-spec and regulated industries.

Corrosion Protection

Forms a protective layer that helps prevent oxidation and extends the life of aluminum components.

Electrical Conductivity

Maintains surface conductivity, making it ideal for grounding and electrical applications.

Dimensional Stability

Applies a thin coating that helps preserve tight tolerances and critical dimensions.

Specification Compliance

Meets MIL-DTL-5541 and other industry standards for consistent, repeatable results.

The Rayco Advantage

The Rayco Advantage 

A white icon of a list and a checkmark inside a dark red circle with a thin yellow border.

Certified & Compliance Driven

ITAR certified (Registration Code M43849) with active NASF and NESF membership. 

A white dollar sign icon inside a red circle with a yellow border, surrounded by radiating white dashes.

Competitive, Transparent Pricing

Cost-effective solutions without compromising quality, compliance, or turnaround time.

A white diamond icon centered within a maroon circle outlined in yellow.

Precision Quality Control

State-of-the-art Fischer XRF technology for accurate coating and film thickness verification.

A white rocket icon set against a dark red circular background with a thick yellow border.

Fast & Reliable Turnaround Times

Standard turnaround of 5–7 business days, with expedited services available upon request.

Need help choosing the best coating for your project?

Let us help.

Specification-Driven. Expert-Supported.

Rayco Metal Finishing, Inc. works to meet your exact coating and finishing specifications with precision and consistency. We support a wide range of industry-recognized standards for aluminum and ferrous metals, including MIL, ASTM, AMS, and QQ specifications—ensuring compliance and performance across aerospace, medical, firearms, and OEM applications.

If your specification is undefined or you need guidance, our experienced team will work with you to determine the best process and standard for your application. Request a quote or speak with our team to ensure your parts meet the right specifications the first time.

Serving Industries with Strict Specifications

Trusted by manufacturers for over 70 years to deliver consistent quality, fast turnaround, and reliable results for high-spec applications.

A silhouette of a military drone parked on a tarmac at sunset with a pastel sky in the background.

Aerospace & Military

An orange pickup truck driving on a paved road through a grassy field at sunset.

Automotive Components

A black semi-automatic pistol resting on a blue surface with its detachable magazine lying beside it.

Firearms & Defense Manufacturing

Industrial Equipment & Components

Medical Devices & Equipment

Commercial OEM Manufacturing

Aerospace & Military

Automotive Components

Frequently Asked Questions

What is chemical conversion coating and how does it work?

Chemical conversion coating is a process that creates a protective layer on aluminum through a chemical reaction. Parts are immersed in a solution that forms a corrosion-resistant coating while maintaining conductivity and dimensional accuracy.

What are the benefits of chromate conversion coating?

It improves corrosion resistance, maintains electrical conductivity, and provides surface protection without adding thickness. It is widely used in aerospace and electronics applications.

What specifications does Rayco meet for chemical conversion coating?

Rayco Metal Finishing performs chemical conversion coating in accordance with MIL-DTL-5541 and supports additional industry standards to meet strict compliance requirements.

What types of parts are best suited for chemical conversion coating?

This process is ideal for aluminum components that require corrosion protection and electrical conductivity, including aerospace parts, enclosures, and precision-machined components.

How do I know if chemical conversion coating is the right process for my project?

If your application requires corrosion resistance without affecting dimensions or conductivity, chemical conversion coating is often the best solution. Rayco can help determine the appropriate specification for your needs.