RE: Galvanic corrosion

From: <Steve>
Date: Mon Jun 02 2003 - 01:47:00 EDT

Hi Jagdeep
which piece has corroded? As Geoff said dezincifation can occur. Is it the brass that has gone? Can you describe the line? Liquid and pH?

Cheers

Steve McKenzie

-----Original Message-----
From: Geoff Stone DD&D Australia [mailto:blenrayaust@yahoo.co.uk] Sent: Monday, June 02, 2003 5:25 PM
To: PipingDesign@yahoogroups.com
Subject: Re: [PipingDesign] Galvanic corrosion

Possibly the grade of brass. Brass is known to to dezincify and the resultant
mess looks like corrosion.
--- punnu_h2003 <jsingh11@rediffmail.com> wrote:

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Thanks for some stuff on the subject. But I am specifically looking for the possible reason of corrosion when SS tube and a Copper tube have a Brass coupling to join them. What could have triggered the Galvanic Corrosion.

-----Original question-------
My question relates to the Compatibility of distinct materials when used in assembly. To be specific, there is a case where a SS tube is joined to a Copper tube wit a brass coupling. At the joint, corrosion has set in. Why and what is the cause? What metal properties of these materials are conflicting causing corrosion.? What is actually a Galvanic corrosion?Thanks. I hope to get good and informative response.

Jagdeep

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Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Received on Mon Jun 02 01:47:00 2003