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Thread 232/13

Hard anodizing with Mg and Si present

What is the affect of Magnesium at .4-.6 % levels combined with Silicon 9.5-11.5 on the hard anodizing process? Can it be done? How is surface finish affected?

Robert Laughlin
- Guelph, Ontario, Canada
2003
publicly reply to Robert Laughlin

It is a very poor candidate for hard anodizing. It can be run thru the process, but the outcome will be unacceptable to many end users.

James Watts
- Navarre, Florida
2003
publicly reply to James Watts

High alloy die-castings can be hard anodized. The coating is not as hard nor as uniform in appearance and thickness as hardcoat on wrought alloys. All hard anodizing will result in an increase in surface roughness.

Chris Jurey, Past-President IHAA
Luke Engineering & Mfg. Co. Inc.

Wadsworth, Ohio

2003
publicly reply to Chris Jurey

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