Chromate Conversion Coatings
Chromate Conversion Coatings, commonly referred as chem film, is a process of immersed in either a hexavalent chromate or trivalent chromate (RoHS Compliant) bath. This leaves a thin film which serves many purposes like a primer for paint, corrosion inhibitor, or to provide enhanced conductivity. Most commonly applied on aluminum substrates, chemical film makes for a useful coating on machined alloys that require conductive properties or subsequent painting. Conversion coatings are also commonly used to “seal” over other various finishes like phosphate or zinc.
Paramount Metal Finishing offers our chromate conversion coatings to MIL-DTL-5541, both Type I and Type II (RoHS Compliant). Paramount Metal Finishing’s MIL-DTL-5541 Chromate Conversion Coating processes are also NADCAP accredited.
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Chromate Conversion Coating
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MIL-DTL-5541
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Zinc Nickel with Yellow Chromate
Zinc Nickel with Black Chromate
Yellow Chromate on Aluminum
Chromate Conversion Coatings: Additional Capabilities
Paramount offers many additional capabilities chromate conversion finishes including detailed masking, automated processes for large quantities, ability to handle large parts, dedicated and customized racking systems, complex multi-finish capabilities, in-house laboratory, as well as a full service wet spray and powder coating paint shop.