Plating, Zinc-Nickel Alloy
|Publication Date:||1 May 2020|
This specification covers the requirements for electrodeposition of a zinc-nickel alloy and the properties of the deposit.
Zinc-nickel plating has been used typically to provide corrosion resistance to steel parts that may operate at elevated temperatures (see 1.3) but usage is not limited to such applications (see 8.9 and 8.10).
Plating covered by this specification is classified as follows:
Type 1 As-plated without supplementary treatment, service temperature 500 °F (260 °C) maximum
Type 2 As-plated with supplementary chromate treatment Grade A Hexavalent chromate treatment, service temperature 250 °F (121 °C) maximum Grade B Trivalent chromium treatment, service temperature 375 °F (191 °C) maximum
Type 3 As-plated with supplementary phosphate treatment (adhesion base for primer/paint), service temperature 350 °F (177 °C) maximum
Unless a type is specified, Type 2 shall be supplied.
For Type 2 plating, if no grade is specified, Grade A shall be supplied.
Safety - Hazardous Materials
While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards that may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take the necessary precautionary measures to ensure the health and safety of all personnel involved.