Good corrosion resistance when used as undercoat. Class 2 .0005 minimum thickness. Typically used as an undercoat for nickel and other platings. Class 3 .0002 minimum thickness. Similar to stainless steel in color.
Electroless nickel is used extensively in salvage of mismachined parts.
This specification has been cancelled but, is still used in industry. As coated Class 2 Steel and other base metals heat treatable to improve hardness. No specific hardness numbers defined by these two specs on the EN deposit. AMS-2404D Thickness as specified on drawing. Unless a specific class is specified, Class 1 shall be supplied.