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Ted Mooney, P.E. RET
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for Metal Finishing 1989-2025
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Chemical Removal of Brass Plating
Is there any chemical way to remove brass plating? I need to reveal the stainless steel underneath.
Thank you.
- Edmonton, Alberta, Canada
2002
The old traditional is 90 g/l of NaCN with 15 g/l of NaOH @ room temperature. Make the work anodic and use steel cathodes. Although the handbooks all say 6 volts, start out easy at 2 volts.
Another alternate is ammonium persulphate 75 g/l with 375 ml/l of aqua ammonia
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- Seattle, Washington
2002
If the base is stainless steel then the simplest is nitric acid say 20-50% vol or say 10% sulfuric acid with additions of hydrogen peroxide preferably with a stabilizer e.g., phenol, alcohol.
Geoffrey Whitelaw
- Port Melbourne, Australia
2002
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