What is AMS QQ P 416?

What is AMS QQ P 416?

SAE AMS-QQ-P-416. February 1, 2002. Plating, Cadmium (Electrodeposited) Scope: This specification covers the requirements for electrodeposited cadmium plating. Classification: Cadmium plating shall be of the following types and classes, as specified (see 6.2): Types: I-…

What color is cadmium plated steel?

This type of cadmium plated is iridescent yellow colored. The quality of type II treatment is tested by using a salt spray on the exterior of the plated component, then checking for signs of corrosion after a 96-hour waiting period.

How thick is cadmium plating?

Class (Thickness) 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”.

When was cadmium plating banned?

Cadmium has been banned in some types of plastic since 1992, and the ban has now been extended.

Can you paint over cadmium plating?

A. I agree that painting over cadmium has potentially less adhesion of paint unless the cadmium has a yellow conversion coating. The conversion coating (chromate) acidifies and protects the surface allowing paint to adhere.

What are the different types of zinc plating?

What follows describes each of them and their uses.

  • Yellow zinc plating. This particular zinc coating is most seen in the automobile industry and offers a middle level protection against rust and corrosion.
  • Blue/clear zinc plating.
  • Black zinc plating.
  • Acid zinc plating.

Is cadmium plating illegal?

For your information cadmium is not banned but it is controlled , if you want to do cadmium plating you have to take special permission and assure authorities for 100% proper disposal of waste water as per local norms. Cadmium plating is still specified by Government and Aircraft manufacturers.

Is cadmium plating toxic?

Cadmium and its compounds are highly toxic and exposure to this metal is known to cause cancer and targets the body’s cardiovascular, renal, gastrointestinal, neurological, reproductive, and respiratory systems.

What color is ASTM B633 Type II?

color Zinc Yellow
Zinc Chromate Per ASTM B633-85 Type II Does the Type II in spec ASTM B633 [affil. link to spec at Techstreet] designate the color Zinc Yellow.