Trivalent Chromate Coating

We offer cost-effective trivalent chromate conversion for functional and protective passivation of aluminum parts and components.

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Superior Results for Better Performance

Our process meets mil spec MIL-DLT-5541 Type II Class 1A and Class 3, and delivers numerous benefits.

Benefits of Trivalent Chromate Coating

Corrosion-resistant
Maintains electrical conductivity
Primer for paint and lacquer
Enables rubber bonding
Low-cost
No measurable build-up
Non-hexavalent chromium
Non-toxic
RoHS and WEEE compliant
Heat tolerable

Supporting Industrial Applications

Numerous industries rely on our trivalent chromate passivation because of the broad range of industrial and commercial uses.

Common Uses for Trivalent Coatings

Aluminum heat sinks
Wire housings
Fasteners
Hydraulic fittings
Decorative plating
Aerospace and maritime housings
Cast aluminum parts
Bushings
Aluminum electronic housings and components
And more

FAQs

A conversion coating is a chemical treatment applied to manufactured parts that superficially converts the material into a thin coating of an insoluble compound. These coatings are commonly applied to protect the part against corrosion, improve adherence of other coatings, lubrication, or decoration.

Our chromate conversion coating for aluminum involves the following steps:

Degreasing and rinsing to remove oil, grease, oxides, and heavy metallic impurities
Deoxidize and desmut
Chromate treatment by immersion
Rinse
Dry

Due to its broad range of capabilities, chromate conversion coatings are utilized throughout a wide range of industries including:

Automotive
Aviation & Aerospace
Buildings & Architecture
Electronics
Marine
Medical/Dental Equipment
Military/Law Enforcement
Sporting Goods

At Arrow Cryogenics we use a unique chemical solution for our chromate conversion coatings. Our conversion coatings are hexavalent free and are compliant with NADCAP, RoHS and WEEE directives. Arrow Cryogenics is also ISO 9001:2015 certified.

Chromate conversion coatings have been in use since at least the 1960s; however, the hexavalent chromium chemicals used have been found to be highly toxic. Arrow Cryogenics uses a unique chemical solution for our chromate conversion coatings that does NOT contain hexavalent chromium.