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topic 1841

Blackening of stainless steel without chromates or boiling caustic


(1998)

I am looking for a method of blackening on stainless steel that does not involve caustic or chromates on a rolling boil (or near rolling boil). Is there such a critter and does it work consistently?

Chris Burgess
plating shop, Brisbane, Australia


(1998)

Hi Chris,

I suggest you try EPI (Electrochemical Products Inc.) [a finishing.com supporting advertiser] of New Berlin Wisconsin , I am sure they have a Cold Black for Stainless Steel.

regards

John Tenison-Woods
John Tenison - Woods
- Victoria Australia


(1998)

Chris: One option available for blackening stainless is to plate it with Black Chrome. It is a very durable and uniform coating.

Gary Wannlund
- Monrovia, California


finishing.com note: Black chromium on stainless does involve some corrosive treatments, such as Woods nickel strike and high concentration hexavalent chromium solutions.

tom pullizzi portrait
Tom Pullizzi
Falls Township, Pennsylvania



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