AMS2420E results from a Five-Year Review and update, with changes made to Ordering Information and paragraphs 4.2.1, 4.2.2, 4.2.3, 18.104.22.168, 4.3.2, and 22.214.171.124.
ORDERING INFORMATION: The following information shall be provided to the plating processor by the purchaser.
Purchase order shall specify not less than the following:
Quantity of pieces to be plated
Permissible electrical contact locations, if not specified (see 126.96.36.199)
Class of plating desired (see 1.3)
Plating thickness desired if other than that specified in 3.3.1
Basis metal to be plated
Reflow, when necessary (see 3.2.4)
Parts manufacturing operations such as heat treating, forming, joining and media finishing can affect the condition of the substrate for plating, or if performed after plating, could adversely affect the plated part. The sequencing of these types of operations should be specified by the cognizant engineering organization and is not controlled by this specification.