RE: [MW:5683] weld SA-106 to 9 Cr materials P No 5B gr 1 or gr 2

but P91 must be heat treated with temp. range 700-760 deg celsius  with no exemptions  as per table 132 ASME 31.1 require PWHT at temperature and the lower  phase transformation temperature for carbon steel is 723 deg celsius  . and temp. range for PWHT for CS is  600-650 deg celsius which is very far from P91 temperature ranges and consequaently make the weld joints to fail in hardness test requirements.
 

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Date: Mon, 21 Jun 2010 04:45:24 -0700
From: kashkousha1@yahoo.com
Subject: Re: [MW:5682] weld SA-106 to 9 Cr materials P No 5B gr 1 or gr 2
To: materials-welding@googlegroups.com

dear ahmed
yes,by using ER 90S-B9(GTAW)&E9018-B9 (SMAW) or E 9015-B9
the joint should be heat treated acc .to ASME B31.3

 

H.KASHKOUSHA

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From: Ahmed Hafez <diesel2002@hotmail.com>
To: Welding Material <materials-welding@googlegroups.com>
Sent: Mon, June 21, 2010 1:42:17 PM
Subject: [MW:5681] weld SA-106 to 9 Cr materials P No 5B gr 1 or gr 2

good morning every one
is it applicable to weld SA-106 to 9 Cr materials P No 5B gr 1 or gr 2
 
thanks and best regard

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