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MIL TT-C-490J

Chemical Conversion Coatings and Pretreatments for Metallic Substrates (Base for Organic Coatings)
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MIL TT-C-490J

Chemical Conversion Coatings and Pretreatments for Metallic Substrates (Base for Organic Coatings)

PUBLISH DATE 2024
MIL TT-C-490J
This specification covers processes, pretreatments, and pre-primer surface preparations of metallic substrates for coating applicators. It covers metal surface preparation for delaying corrosion initiation and promoting primer adhesion. In addition, this specification covers the testing requirements for qualification of conversion coatings, the pretreatments and pre-primer coatings. This specification includes production validation requirements, which may also vary depending on the contract. Additional qualification requirements may be required based on each specific application. For all types and classes, unless contraindicated on drawings or contracts, materials containing hexavalent chromium (Cr6+) shall not be permitted on coated end items.
SDO MIL: United States Defense Standardization Program
Document Number
Publication Date Sept. 6, 2024
Language en - English
Page Count
Revision Level J
Supercedes
Committee
Publish Date Document Id Type View
Sept. 6, 2024 TT-C-490J Revision