This SAE Standard specifies the properties of chromate conversion coatings on aluminum and aluminum alloys. It details inspection and testing requirements for chromate conversion coatings. Where there are differences in the requirements for the Brushing Grade from the Standard Grade they are highlighted in this Standard.
RATIONALE AMS03-18A stabilizes this document because this document contains mature technology that is not expected to change and thus no further revisions are anticipated. STABILIZED NOTICE AMS03-18A has been declared "STABILIZED" by SAE AMS Finishes Processes and Fluids Committee B. This document will no longer be updated and may no longer represent standard industry practice. Users of this document should refer any certification issues (e.g., exceptions listed on the certification report) to the cognizant engineering organization for their disposition. NOTE: In many cases the purchaser may be a sub tier supplier and not the cognizant engineering organization. AMS Committee B recommends that the following similar (e.g., properties, fit, form, function) specifications be considered for future procurement. This listing does not constitute authority to substitute these specifications for the “STABILIZED” specification. AMS2477 Conversion Coating for Aluminum Alloys Low Electrical Resistance Coating AMS2473 Chemical Film Treatment for Aluminum Alloys General Purpose Coating