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Thread 09/85

Anodizing Aluminium to a stainless steel color

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Q. We want to anodize aluminium in other colors than silver, brass, bronze or natural colored. We are looking for finishes like grey or stainless-steel.

Any advice would be appreciated

Axel Bree 1998
publicly reply to Axel Bree

A. The larger dye companies such as Novamax and Clariant make nearly any color that you can imagine. They mix dye colors to provide virtually any shade of the rainbow.

James Watts
- Navarre, Florida
publicly reply to James Watts

A. We run two large job shop anodize plants here & do both grey & stainless steel colors. If you are looking to purchase dyes I suggest you try Clariant Corp or US Specialty.

David A. Kraft
- Long Island City, New York
publicly reply to David A. Kraft

A. Axel - Try Italtecno in Modena, Italy. They have a process that will give you blue, green and grey. You need a special power supply that they will sell. I visited their plant last year and the colors looked good.

Regards,

Sanjay A. Bulchandani
- Bombay, India
publicly reply to Sanjay A. Bulchandani

RECOMMENDED ANODIZING & CHROMATING BOOKS
for Shops, Specifiers & Engineers

"The Surface Treatment & Finishing of Aluminium and Its Alloys" by Wernick, Pinner & Sheasby (1959 - 2001)
avail from eBay, AbeBooks, or Amazon

"The Metallurgy of Anodizing Aluminum" by Jude Mary Runge (2018)
avail from eBay, AbeBooks, or Amazon

"Surface Treatment and Finishing of Aluminum" by Robert King (1988)
avail from eBay, AbeBooks, or Amazon

"Anodic Oxidation of Aluminum and Its Alloys" by V. F. Henley (1982)
avail from eBay, AbeBooks, or Amazon

"Aluminum Finishes Process Manual" by Reynolds Aluminum (1973)
avail from eBay, AbeBooks or Amazon

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I am studying Design technology for one of my a-levels. For my project I am considering anodizing aluminium. Any information about the process/cost or any other information would be useful. I want to use colors as opposed to natural metal metal finishes. Please help if you can!

Louise kerr-
- England
2000
publicly reply to Louise kerr

Louise, nearly any of the metal finishing "must-have" books will have a chapter on anodizing, which is probably a good enough start for a student. But if you need a whole book on anodizing, here is a list of some ⇨

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2000
publicly reply to Ted Mooney

Q. My question is:

When you do a surface-treatment on aluminium with anodically oxidizes, the factor C (kcal/m^2.h.K^4) will be 1.8 to 4.3. The question is now, how is that possible or it will depend on the process?

Schaeffer
- Hengelo, Netherlands
2000
publicly reply to Schaeffer

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