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topic 10554

Tarnishing on silver


Whether tarnishing on silver components for industrial purpose will affect its conductivity? How long it will take to tarnish 95% silver from date of mfg.? How we can prevent the tarnishing?

A. Raja
- India

1st of three simultaneous responses--

Mr Raja

Corrosion of silver leads to formation of silver sulfide and other salts of silver depending on the atmospheric environment prevailing.

Increases in resistance values is directly related to the type of salts formed.

Corrosion prevention is achieved.

1) Commercially available Immersion Silver Anti Tarnish products from Indian companies in Chennai. They provide usage guidance and the chemical.

2) Electrolytic treatment in Proprietary chemical solutions which are similarly available.

Asif Nurie
- New Delhi, India

With deep regret we
sadly advise that
Asif passed away

on Jan 24, 2016

2nd of three simultaneous responses--


Palladium is the common way to protect silver from tarnishing when you cannot apply organic lacquers. The time required to tarnish depends on several factors (humidity, environment, temperature, etc,). Good luck.

Guillermo Marrufo
Monterrey, NL, Mexico

3rd of three simultaneous responses--  

Dear Mr Raja,

I am extremely surprised to see this question from particularly from you since you have been using Silver parts for a long time in addition to doing your own plating.

You are obviously not in touch with the right Silver plating Chemistry suppliers who abound and flourish in Bangalore by the hundreds. Almost all the Silver anti-tarnishes available will be conductive as silver is plated for its electrical conductivity !

The anti-tarnishes will last as long directly in proportion to the quality and integrity of the Job done .

You can prevent anti-tarnishing by looking for a good supplier and a good anti-tarnish.

Khozem Vahaanwala
Khozem Vahaanwala
Saify Ind supporting advertiser
Bangalore, Karnataka, India

saify logo


How about PCBA manufacturing?
I hope to know about relation between Tarnish and environment factor (such as, sulfur in environment XXppb).

Please help to advise.


Nono talent
- Thailand

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