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NOT MEASUREMENT SENSITIVE MIL-DTL-5541F 11 July 2006 SUPERSEDING MIL-C-5541E 30 November 1990 DETAIL SPECIFICATION CHEMICAL CONVERSION COATINGS ON ALUMINUM AND ALUMINUM ALLOYS This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE
1.1 Scope. This specification covers chemical conversion coatings formed by the reaction of chemical conversion materials with the surfaces of aluminum and aluminum alloys. 1.2 Classification. The chemical conversion coatings are of the following types and classes. 1.2.1 Types. The chemical conversion coatings are of the following types (see 3.1): Type I – Compositions containing hexavalent chromium. Type II – Compositions containing no hexavalent chromium. 1.2.2 Classes.