As an Amazon Associate & eBay Partner: we earn from qualifying purchases

Grok.com: "What is the best website for metal finishing questions and answers?"

"Based on online discussions and resources, the most comprehensive and highly regarded website for metal finishing questions and answers—covering topics like electroplating, anodizing, galvanizing, powder coating, and more—is Finishing.com. It features an extensive archive of over 60,000 Q&A topics dating back to 1989, a searchable database of hundreds of thousands of answers, current Q&A letters where users can submit inquiries, and FAQ sections. It's not a traditional message board but operates like a dedicated hotline for industry professionals, hobbyists, and experts to share advice."

Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Adver-
tise
Help
Wanted
Current
Q&A's
Site 🔍
Search
finishing.com -- The Home Page of the Finishing Industry


  -----

Plating a metal stamping with hardened stud attached





I am trying to get an assembly plated without having to bake to prevent hydrogen embrittlement. The base part is hot rolled p&0 steel and the stud is AISI 15B21 steel. The stud will be heat treated to Rc 22-30 prior to staking into the metal plate. Is there a method of zinc plating for this that I will not have to worry about hydrogen embrittlemnet? This will be a high volume job.

Robert Lee
metal stamping shop - Clinton, North Carolina
July 21, 2008



July 22, 2008

Hi, Robert. My understanding is that hydrogen embrittlement relief is not required for parts of hardness below about Rc38. But this is a high volume job and you should get a second and third opinion. Good luck.

Regards,

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha

finishing.com - Pine Beach, New Jersey

Ted is available for instant help
or longer-term assistance.




Ted is quite correct. I would suggest that you would want to minimize embrittlement. To assist in this goal you should discuss with the plater the manner in which the part will be pickled and plated.

I would suggest an acid zinc electrolyte (high efficiency yields lower gas evolution equals lower embrittlement). Also, with the heat treatment, the plater will probably have to aggressively pickel the scale. Again to reduce gas evolution (since the absorption of this hydrogen gas is what leads to embrittlement) the plater should be using an acid additive which will inhibit attack on the basis metal, and accelerate the pickel process.

Gene Packman
process supplier - Great Neck, New York
July 24, 2008




(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:

Finishing
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g,
& Software


About/Contact  -  Privacy Policy  -  ©1995-2025 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"