Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Aluminum cathodes for anodizing
What is the best alloy of aluminum to use for cathodes in an anodizing tank(sulfuric acid).
Vick Corsofabtricators - Slidell, Louisiana, U.S.
2003
6063 T6. For more info see letter 1177.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2003
The alloy of choice is 6063t6. It is the most durable Aluminum alloy for sulfuric acid anodizing baths,both type II and III hard coat. We have system using this alloy in the field for over 2 1/2 years with minimal material loss even without cathode protection. Although there is some difference of opinion on the matter we prefer the flexibility of bolted connections. Attend the talk at Sur/Fin on equipment updates in anodizing in Milwaukee in June.
Drew Nosti CEF
Member AESF Light Metal Committee
Member AAC Hard Coat Committee
Drew Nosti, CEF
Anodize USA
Ladson, South Carolina
2003
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