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Ferric Nitrate process for Magnesium Alloys.

I am looking for a source for Ferric Nitrate pickling of a machined AZ91D Magnesium parts. I believe this process was known as Dow 21 or equivalent. Can anyone point me towards a current source or identify replacement processes.

Thank you for any assistance you could provide.

John P [surname deleted for privacy by Editor]
- Chicago, Illinois, USA
1999

Magoxid-Coat(r) has been approved to replace Dow21 by one of our customers on an automotive substrate application. It is not equivalent, as Magoxid-Coat is an anodizing process for magnesium and Dow21 is a pickling process. However, the cost is competitive and the corrosion protection is superior.

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

Wadsworth, Ohio

1999

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