The authoritative public forum
  for Metal Finishing since 1989
  

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TO PRODUCE STAINLESS SILVER OBJECT

 

OUR ASSOCIATES ARE PRODUCER OF PURE SILVER OBJECT OF DIFFERENT SHAPE AND SIZES. WE ARE LOOKING FOR SUITABLE ADDITIVE WHICH CAN BE ADDED IN MOLTEN SILVER TO PREVENT IT FROM BLACKENING AND TARNISHING ON FINAL FINISHED PRODUCT. I.E. TO PRODUCE STAINLESS SILVER OBJECT WHICH DOES NOT REQUIRE POLISHING.

SHABBIR A [last name deleted for privacy by Editor]
- Karachi, Pakistan

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2006

There are several patented and proprietary alloys of silver that have been developed in the last few years that are tarnish resistant.
You could easily find information by Googling "tarnish resistant silver".
e.g.
www.ganoksin.com/orchid/archive/200003/msg00153.htm
www.mycelticrings.com/tarnish-resistant-silver.html
cat.teho.net/software/kultakeskus_en2/e-site/

5% germanium is one method, others use more complex alloys.

A particularly good paper on the subject is written by Michael T Roche amd Frank E Goodwin.
Title "Improved Tarnish Resistant Silver"

You can find it through the internet titled SM1_Paper.pdf

Hope this is helpful for you.

Michael Granlund
- Washington