RE: Ferralium Pipe

From: <Steve>
Date: Sat May 21 2005 - 20:02:00 EDT

It's a high strength superduplex. About 50:50 austenitic/ferritic which keeps it weldable while having the corrosion resistant properties of ferritics.
From memory, the nitrogen is claimed to add strength, but I think it does this by chromium carbide suppression. The copper and moly are probably for pitting resistance.
We use it for corrosion/abrasion reasons and also it is spark resistant and doesn't burn like Ti in an oxygen enriched environment. I am not madly happy about its corrosion resistance in our application (Ti is miles better) and am not convinced it is the best choice given availability issues. Will have a careful look at SAF2507 as a substitute.

Cheers

Steve

-----Original Message-----
From: <a href="/group/PipingDesign/post?postID=TJgb23pSo_BoKc7McAF5dZeC2GOzrYf6j19x5HMWObjE-ePOfZ74j0cm4A9u7E6hXf_Ivxr9yIsOb_Ud9DVKF7I9rV4re7M">PipingDesign@yahoogroups.com</a> [mailto:<a href="/group/PipingDesign/post?postID=TJgb23pSo_BoKc7McAF5dZeC2GOzrYf6j19x5HMWObjE-ePOfZ74j0cm4A9u7E6hXf_Ivxr9yIsOb_Ud9DVKF7I9rV4re7M">PipingDesign@yahoogroups.com</a>] On Behalf Of Christopher Wright
Sent: Sunday, May 22, 2005 11:22 AM
To: <a href="/group/PipingDesign/post?postID=TJgb23pSo_BoKc7McAF5dZeC2GOzrYf6j19x5HMWObjE-ePOfZ74j0cm4A9u7E6hXf_Ivxr9yIsOb_Ud9DVKF7I9rV4re7M">PipingDesign@yahoogroups.com</a> Subject: Re: [PipingDesign] Ferralium Pipe

On May 21, 2005, at 4:51 PM, Steve McKenzie wrote:

> Thanks Chris

Don't mention it. What exactly the hell is it? I couldn't make jack out of the chemistry.
Christopher Wright P.E. |"They couldn't hit an elephant at <a href="/group/PipingDesign/post?postID=pnnrPsVDR_5qrCBhvt4nFmLOCfvOHrA2JquTZA1QfADdb8_FpmMU9SbfDjtB9b30fmTxximIaEvZ">chrisw@skypoint.com</a> | this distance" (last words of Gen.

.......................................| John Sedgwick, Spotsylvania

1864)
<a href="http://www.skypoint.com/~chrisw/">http://www.skypoint.com/~chrisw/</a>

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