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topic 57202

Chemical to remove nickel plating from silver or brass jewelry without destroying the original surface

Metalx nickel stripper
... plus Cufix E Copper Stripper, TN-64 TiN Stripper
& Strippers for Tungsten Carbide in Cobalt Matrix

A discussion started in 2011 but continuing through 2018

May 24, 2011

Q. What chemical would you recommend to remove bad & crater-filled Nickel plating from Silver or Brass jewelry without destroying the original surface?
Please advise as I have a peculiar problem with the crater developing on the surface of the jewelry...Also recommend any good books if any available on the subject matter or advice to make solutions in-house for plating......
Awaiting for your response...
best regards,

Prakash V Pai
Research - Mumbai, Maharashtra, India


ASM Metals Handbook
Vol. 5
Surface Engineering

May 24, 2011

A. Hi, cousin Prakesh.

There are various chemicals available for stripping of nickel, including cyanide-based chemicals, but most of them have serious safety and environmental issues. Some threads here cover stripping of nickel in detail; please use the search term "nickel strip" and "remove nickel" in the search engine at the top of the page.

Despite the universal desire to formulate solutions in-house for economy, professionals usually use proprietary strippers and nickel plating solutions because they're better. Further, it is difficult to learn to be a good plater without a hands-on teacher, proven plating solutions, and the technical assistance that comes with them.

Still, if you want to make your own nickel plating solutions, you can use old-fashioned non-proprietary additives, and the ASM Metals Handbook Vol. 5 explains it in good detail =>

Our "must-have" booklist includes reviews of many important plating handbooks, and I hope you find it useful. Good luck.

Regards,

Ted Mooney, finishing.com
Teds signature
Ted Mooney, P.E.
finishing.com
Pine Beach, New Jersey



September 7, 2013 -- this entry appended to this thread by editor in lieu of spawning a duplicative thread

Q. Will you please tell me the method to remove nickel plating from silver?

Ahmed Munir
engineering - Lahore, Pakistan


October 11, 2013

A. While I have not tried this I would expect that the proprietary strippers available from most suppliers based on MNBS in 5% sulphuric acid for stripping nickel off brass, would also work on stripping nickel from silver.

Geoffrey Whitelaw
Geoffrey Whitelaw
- Port Melbourne, Australia


January 26, 2014

A. Dear,
Proprietary chemicals are available at Bangalore at affordable price for removal of nickel from silver and brass.

Mani Bhat
- Bangalore, Karnataka ,India


April 4, 2014

Strippers are usually cheap products.

Vlad Manta
- Oradea, Romania



February 20, 2018

Q. Hi,
I want to strip nickel plating from Brass object.
Please suggest a chemical for stripping which should not be harmful like nitric acid, and which does not generate harmful fumes.
Please suggest me a product which will give me 100% result.
Please send me details.

atul shinde
B.l.electroplater - Airoli Navi Mumbai Maharashtra, India
  ^- Privately contact this inquirer -^


March 29, 2018

A. Atul, we have the need to strip nickel from brass. One of our main concerns was not damaging the brass. Some of the proprietary Nickel Strippers we had tried in the past were capable of causing quite bad surface etching to the brass. In the end, we used a small UK company to supply us with a reverse-electrolysis nickel stripper solution. I'm not sure what acids are used but we have a small 10 litre tank, use titanium baskets, hangers etc and a 30amp 6v power supply. It works very well for us and rarely causes any surface damage whatsoever to the brass. Once all of the nickel has gone, the current on the power supply drops to pretty much zero, then we know were done. It works at room temperature and we just agitate using air. The tank has a lid but even with the lid off, the fumes are not as bad as some other methods but should be used with fume extraction of some sort. It's unlikely you'll find a way to do this without generating any harmful fumes. If you're interested, I'll pass on the details. It's probably a fairly basic concoction.

Alan Starkie
Cameraworks-uk - BURY, Lancs, UK



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