Aloha, fun & authoritative answers -- no cost, no registration, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Decorative Nickel vs. Engineering Nickel Plating?

I would like to know what the difference is (if any) between Nickel plate "FED-QQN-290 (replaced by AMSQQN290) " and Sulfamate Nickel Mil-P-27418.

Steve Cox
Mechanical Designer - Union City, California
2006

QQ-N-290 is a general nickel plating spec which covers both engineering, corrosion-resistant (i.e. protective) and decorative nickel. The other is very specific to low stress, more ductile, nickel plating. It is recommended more so for underplates, particularly on high strength steel components subject to hydrogen embrittlement or where the parts must flex or be crimped, for example, in assembly. One monitors the resulting internal stress of the nickel deposits with this nickel plating whereas it's seldom of concern in plating to QQ-N-290.

Milt Stevenson, Jr.
Syracuse, New York
2006

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: