Nickel

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Nickel Mil Spec Thickness Comments
QQ-N-290A
There is a nickel finish for almost any need. Nickel can be deposited soft or hard – dull or bright, depending on process used and conditions employed in plating. Thus, hardness can range from 150-500 Vickers. Can be similar to stainless steel in color, or can be a dull grey or light grey (almost white) color. Corrosion resistance is a function of thickness. Has a low coefficient of thermal expansion – is magnetic. All steel parts having a hardness of Rc-40 or greater require a post back at 375° ±25°F.






Class1
Type I
Type II
Type III
Type IV
Type V
Type VI
Type VII
Type VIII
Type IX
Type C
Class 2

 Total thickness of copper and nickel




.002” min.
.00125” min
.00075” min.
.00040” min.
.00050” min.
.00030” min.
.00010” min.
.00125” min.
.00075” min.
.00050” min.

 NOTE: All steel parts having a tensile strength of 200,000 or greater shall not be nickel plated without specific approval of procuring agency.

For decorative applications on:
Steel base;
Steel base;
Steel base;
Steel base;
Copper base;
Copper base;
Copper base;
Zinc base;
Zinc base;
Zinc base;
For engineering applications type of nickel (process) should be called out. For salvage and where good hardness and corrosion req.

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