Plating anodes are, in fact, made of lead alloys of different compositions for greater conduction of electricity and corrosion resistance. Each type of lead anode has benefits that make it suitable for different applications.
Lead anode alloys generally consist of tin, silver, and antimony. The favored alloys, based on the specific application, are lead- antimony tin as well as lead-silver alloys. One reason for this is because of the alloys’ resistance to corrosion in the sulfuric acid that’s used for electrolytic solutions. (Lead-alloy anodes are used in electro winning – also known as electro extraction – as well as for plating metals such as manganese, copper, nickel, and zinc.) Lead anodes have superior attributes, such as being highly resistant to the corrosive effects of seawater.
The ongoing demands for continuous improvement in the plating industry has led to changes in the manufacture of lead anodes. In addition to various lead alloys, different formats of lead anodes are manufactured for different purposes. For example, in the effort to improve plating processes, plating operations have increasingly made the move from rectangular and/or flat anodes to solid round anodes.

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