RE: [MW:4588] Duplex & Superduplex

simply, duplex has 22% Cr, such as Alloy 2205
          super duplex has 25%Cr, such as Alloy 2507.
 
for tube/pipe welding, I recommend GTAW + SMAW process.
GTAW:    AWS A5.9: ER2209        dia. 2.0 or 2.4mm
SMAW:   AWS A5.4: E2209-17   dia. 3.2 or 4.0mm
 
Boehler or Avesta brand is good for your reference!
 
 
Regards
 
Roy
 
 
 
 

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Date: Wed, 24 Mar 2010 09:43:00 +0400
Subject: [MW:4601] Duplex & Superduplex
From: ibratech@gmail.com
To: materials-welding@googlegroups.com

Hi friends,

 

How can we identify duplex and super duplex stainless steel?. Both are P10H.

What are the common elcetrodes for Duplex and super duplex?.

Thanks & Regards
Muhammed Ibrahim PK

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