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Antimony in Lead Cathodes for Type 2 sulfuric acid anodizing

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Q. I need to use long rods of lead in a type 2 sulfuric anodizing process. Pure lead will be too soft and will bend in this situation. I am contemplating using lead cathodes that are hardened with 6% Antimony. Will the Antimony affect the anodizing process? Will I need to clean the lead anodes more if they are hardened with Antimony? Any help would be appreciated.

Mark

Mark Spaur
- Federal Way, Washington
December 28, 2021

Ed. note: This RFQ is outdated, but technical replies are welcome, and readers are encouraged to post their own RFQs. But no public commercial suggestions please ( huh? why?).

A. The most efficient material to use as cathodes is aluminum. The correct alloy to use for conductivity and longevity is 6063T6

Drew Nosti, CEF
Anodize USA - Ladson, South Carolina
December 30, 2021

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