FED QQ-P-416F Cadmium Plating
ENS Technology provides complete cadmium plating for military, defense, and other non-commercial applications. We deliver cadmium platings to meet FED QQ-P-416F, ASM-QQ-P-416E, and other applicable specifications.
Contact ENS today for cadmium plating services.
Cadmium is a bright metal with excellent corrosion resistance characteristics. Cadmium plating provides a smooth, adherent, uniform surface that is free from blisters, pits, nodules, burning, or other defects when examined visually without magnification.
Types & Classes of Cadmium Plating
Current specifications denote three (3) types and three (classes) of cadmium platings. The type of a cadmium plating refers to supplementary post-treatment colorization processes; the class of a cadmium plating refers to the thickness.
Cadmium plating types I, II, and III are described as follows:
- Type I: As plated
- Type II: With supplementary chromate treatment
- Type III: With supplementary phosphate treatment
Cadmium platings are graded A, B, or C. Grade A requires a minimum thickness of 0.0005”; Grade B requires a minimum thickness of 0.0003”; Grade C requires a minimum thickness of 0.0002”.
Material & Hardness Requirements
Post-plating, parts must be heat treated for anywhere from four to 23 hours; the QQ-P-416F specification also allows for no post-plating heat treatment, depending on the material and application. Heat treatment time depends primarily on the hardness of the substrate material. Materials with a Rockwell hardness of 55 or greater require maximum heat-treating time—23 hours at temperatures ≤300°F.
Parts that will be ground, cold-formed, or cold straightened after heat treating should be stress-relief baked prior to the application of cadmium plating.
The Right Solution for Your Cadmium Plating Specification
ENS Technology provides complete cadmium plating services for parts and components of all shapes and sizes. We offer plating and testing to meet the requirements of your specification.
Quality Conformance Testing
If the plated workpiece is of a size or shape that prohibits the proper validation of plating thickness, or when destructive tests are required, customers should provide separate specimens. In instances where this is impractical, hot rolled steel parts may be used as stand-ins for forged steel articles. When plating ferrous alloys, separate specimens may be cut from scrap castings.
ENS Technology records all test results and maintains these records onsite for seven years.
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