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What is AMS-C-26074?

The Aerospace industry is a highly innovative and rapidly growing industry. As aerospace engineers strive to find lighter and stronger options for their materials, they will often turn to metal finishing companies to provide them with a variety of options to use.

For Electroless Nickel plating the compliance spec is AMS-C-26074. The spec defines four different classes (1-4) as well as three different grades (A, B, and C). These classes and grades are used to easily convey to our team what heat treatments and thickness are requested of us from our customers.

Benefits of AMS-C-26074 Electroless Nickel Plating

  • An even surface
  • Flexibility in thickness
  • Little deposit build-up
  • Allows for different finishes.
  • Can be used on non-conductive surfaces.

Under AMS-C-26074, Grades are used to determine the thickness of deposit that is to be plated. Each grade is typically paired with its own set of alloy bases.

Class Number

Under AMS-C-26074, Class Number is used to indicate different processing guidelines. Class Number can identify whether a product is to be heat treated and at what temperatures.

Acceptable base metals

AMS-C-26074 also includes a list of approved base metals that we are allowed to nickel plate:

  • Iron
  • Copper
  • Aluminum
  • Nickel
  • Cobalt
  • Beryllium
  • Titanium
  • Respective alloys
Strikes and Underplating

Oftentimes specs will require certain practices during pre and post plating processes. In the case of AMS-C-26074, it implements several underplating and striking requirements. For example,