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topic 18362

Conductivity of Zinc Plating


2002

Is Zinc Plating conductive? If not, what plating is ?

Thank you,

Sharon Nicodemus
Rittal - Springfield, Ohio, USA


2002

The zinc itself is conductive, however, conventional chromate conversion coatings add surface resistance that lower the anticipated conductivity of pure zinc. Furthermore, organic topcoats and other sealers intended to boost the corrosion resistance of chromated zinc typically degrade the surface conductance even further.

milt stevenson jr.
Milt Stevenson, Jr.
Anoplate Corporation
supporting advertiser 
Syracuse, New York

Anoplate banner


2002

Zinc in itself is very conductive, the chromates applied after plating for corrosion resistance do offer some electrical resistance. The "clear" or colorless chromate is the most conductive. ASTM B633 [link by ed. to spec at TechStreet] Type III

Bill Grayson
- Santa Cruz, California, USA

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