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Preventing Brass/Copper Contacts from Tarnishing





Q. We are the Micro switches manufacturer facing the problem of Tarnish on Brass/Copper components. To avoid Tarnish, we have planned to do for Lacquer coating over the terminals before Blanking. I would like to know the suitable cost effective and better performance lacquer material, supplier name, Cost, Coating thickness and coating method. Please help.

RAJAGOPAL
Electromechanical switches - MADURAI, TAMILNADU, INDIA
2004


A. You can use Incralac ⇦ on eBay or Amazon [affil link] -special lacquer for copper and its alloys!

Goran Budija
- Cerovski vrh Croatia
2004


A. Why bother with Incralac ⇦ on eBay or Amazon [affil link] , when you can purchase the finest lacquers available?

Jake Koch
G. J. Nikolas &Co.,Inc.
supporting advertiser
Bellwood, Illinois
nikolas banner ad
2004


A. Mr Rajagopal,

Have you considered Chemical Passivation of a Non Chromate variety. These enhance the life and prevent corrosion, and are conductive, unlike the lacquers. There are a number of Copper and Brass anti-tarnish chemical dips available.

Regards,

asif_nurie
Asif Nurie [deceased]
- New Delhi, India
With deep regret we sadly advise that Asif passed away on Jan 24, 2016
2004


A. I agree with Asif. Since the components are electrical contacts, they need to be electrically conducting. A lacquer coating will give an insulating layer.

Cheers.

Gurvin Singh
Mohali, Punjab, India
2004


adv.
nikolasbanner
"Clearcoats/Lacquers for Brass from G.J. Nikolas"


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