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topic 60957

Can cad plating be applied over chrome?

April 25, 2019

Q. I'm pretty sure the answer is no, but...

We have some steel parts that came in undersized by about .0015 inch. To save the parts it was suggested that we get the area chrome plated to build back up the diameter and then grind it down to the proper size. But per the drawing the final finish requires CADMIUM PLATE PER SAE AMSQQP416 [link by ed. to spec at TechStreet], TYPE II, CLASS 2. Will that work? Can Cad be applied to a chrome surface?

Mat Kyne
Shop Employee - Boerne, Texas, USA

April 26, 2019

A. No way. Build it back up with sulfamate nickel, you CAN cadmium plate on top of active nickel.

robert probert
Robert H Probert
Robert H Probert Technical Services
supporting advertiser
Garner, North Carolina
Editor's note: Mr. Probert is the author of Aluminum How-To / Aluminio El Como
and co-author of The Sulfamate Nickel How-To Guide

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