A.M. Metal Finishing Inc.

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Copper

[MIL-C-14550B]

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Copper in color and matte to a very shiny finish. Good corrosion resistance when used as an undercoat. A number of copper processes are available - each designed for a specific purpose.


Class 0: (Unless otherwise specified .001-.005") For heat treatment stop-off.

Class 1: (.001" minimum thickness) For carburizing and decarburizing shield, also plated through printed circuit boards.

Class 2: (.0005" minimum thickness) As an undercoat for nickel and other plating.

Class 3: (.0002" minimum thickness) To prevent basis metal migration into tin (prevents poisoning of solidarity).

Class 4: (.0001" minimum thickness).