ChemFilm Coating Services
National Aerospace Processing (NAP) offers NADCAP-accredited ChemFilm coating services that enhance the corrosion resistance and durability of aerospace components. Commonly referred to as chemical conversion coating, our ChemFilm metal coating process protects components and provides an excellent base for paint. Our advanced processing systems, strict quality controls, and industry certifications at NAP ensure high-performance aerospace conversion coatings that meet the rigorous demands of the aerospace and defense sectors.
Types of NAP ChemFilm Coating
MIL-DTL-5541 Type I (Hexavalent Chromate/Alodine 1200S) Class 1A & Class 3
NAP specializes in traditional chromate conversion coating using Alodine 1200S, a hexavalent chromium ChemFilm trusted in the aerospace, defense, and industrial sectors. This process is MIL-DTL-5541 Type I compliant, providing corrosion protection, paint adhesion, and reliability for aluminum and aluminum alloy components.
Features & Benefits
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Corrosion Resistance: Long-lasting protection for aluminum and aluminum alloys in harsh environmental conditions
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Enhanced Paint Adhesion: Creates a superior bonding surface for primers, paints, and coatings
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Aerospace & Military Applications: Meets standards for aerospace finishing, military hardware, and critical metal components requiring chemical conversion coatings
MIL-DTL-5541 Type 2 Class 1A & Class 3 (Trivalent Chromate/Chemeon eTCP)
NAP offers RoHS-compliant chromate conversion coatings using Chemeon eTCP (trivalent chromium) chemical film, designed for environmentally conscious aerospace and industrial applications. This MIL-DTL-5541 Type II compliant process delivers high-performance corrosion protection while adhering to modern environmental and human health standards.
Features & Benefits
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Environmental Compliance: Fully RoHS-compliant, restricting hazardous substances while supporting sustainable manufacturing
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Reliable Corrosion Protection: Maintains excellent aluminum and aluminum alloy corrosion resistance and surface conductivity
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Aerospace-Grade Applications: Suitable for aircraft finishing, sensitive electronic components, and other high-reliability aerospace parts requiring trivalent ChemFilm coatings
AMS-2473 Chromic Acid Conversion Coating (Aerospace & Defense Aluminum Finishing)
NAP provides AMS-2473 compliant chromic acid conversion coating for aluminum and aluminum alloys, delivering high-quality, aerospace-grade corrosion protection, electrical conductivity, and paint adhesion. The AMS-2473 specification ensures consistent finishes that meet the rigorous demands of aerospace and defense components.
Features & Benefits
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Superior Corrosion Resistance: Protects aluminum components in harsh and extreme environments
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More Durable Surfaces: Provides enhanced durability for structural and critical aerospace parts
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Excellent Paint Adhesion: Creates an ideal surface for primers, paints, and other aerospace finishing coatings
General ChemFilm Process
At NAP, our NADCAP-certified ChemFilm coating process begins with meticulous surface preparation, including cleaning and degreasing to remove contaminants. Aerospace components then undergo chemical treatments in our 10-tank system, which includes DI water rinse sections, to ensure precise and efficient chemical processing. Depending on the application, our experts either apply hexavalent or tri-valent chromium coatings, adhering to specifications like MIL-DTL-5541 and AMS-2473
Throughout the aerospace conversion coating process, we closely monitor chemical concentrations and immersion times to achieve optimal coating performance. Strict quality control measures are implemented throughout, with thorough inspections to verify coating thickness, adhesion, and corrosion resistance.
Choose NAP for ChemFilm Coating Services
When it comes to chemical conversion coating, NAP stands out for its industry expertise, rigorous quality control, and NADCAP certifications. Our NADCAP ChemFilm accreditation (AC7108/11) demonstrates our commitment to excellence in aerospace and defense applications.
With state-of-the-art facilities, a dedicated team of experts, and a proven track record, NAP delivers ChemFilm and other aircraft finishing services trusted by leading manufacturers like Collins, Safran, and Boeing to meet or exceed industry standards. Partner with NAP for reliable, high-quality ChemFilm coatings that ensure optimal performance and durability for your aerospace and defense components.
Time Is Money – Contact Us Today!
Contact our technical staff to learn how National Aerospace Processing can help you reduce lead times, streamline your processes, and deliver top-notch quality. Request a quote or reach out for more information today.