• AIA NAS4160

AIA NAS4160

Plating, Cadmium (Electrodeposited), for Fasteners

Aerospace Industries Association , 03/01/2001

Publisher: AIA

File Format: PDF

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The electrodeposited cadmium platings covered by this standard are intended primarily for use on fasteners and related hardware as corrosion protective platings on ferrous and other non-corrosion resistant basis metals and, secondarily, as a sacrificial barrier between metals which possess incompatible electromotive potentials for galvanic corrosion protection.

PURPOSE

This specification defines the procedures to be followed for the electrodeposited cadmium plating of fasteners, fastening systems and other related hardware primarily as a corrosion protective plating.

CLASSIFICATION

The plating shall be of the following types and classes as specified.

TYPES

Types refer to post plating treatments or lack thereof.

Type I - As plated

Type II - Supplemental chromate treatment

Type III - Supplemental phosphate treatment

CLASSES

Classes refer to the thickness of the cadmium plating (reference 3.4.1).

Class 1 - .0005 inch minimum thickness (13 micrometers)

Class 2 - .0003 inch minimum thickness (8 mircrometers)

Class 3 - .0002 inch minimum thickness (5 micrometers)

Recommendations for improvement or correction of this specification should be directed to the Aerospace Industries Association.

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