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Electro less Nickel (MIL–C–2404D) :

Nickle Plating
nickle plating

Similar to stainless steel in color, Plates uniformly in recesses and cavities (does not build up on edges). Corrosion resistance is good for coatings over .001 thicknesses. Electro less Nickel is used extensively in salvage of miss-machined parts. Also for inside dimensions and irregular shapes (where assembly tolerances need uniformity provided by Electro less process).

Class 2      Baking Schedule to Achieve Hardness
Class 1      As coated.
Class 2 Steel, copper, nickel, cobalt-titanium based alloys and any basis metal not                 adversely affected by heating as specified.
Class 3   Aluminum alloys non-heat-treatable, and beryllium alloys processed to improve                 adhesion of nickel deposit.
Class 4     Aluminum alloy, heat-treatable, processed to improve adhesion of the
                nickel deposit.
Grade A   .001 Min. thickness
Grade B   .0005 Min. thickness
Grade C    .0015 Min. thickness (for severe corrosion protection).

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