[MW:3044] RE: 3032] Re: 3018] p no

No.  It is not permitted by ASME Scetion IX.  See Interpretation IX-89-41 below: 

 

 

Question (1): May a procedure, which is qualified using an assigned base metal identified on the PQR and WPS by chemical composition and mechanical properties as well as P-Number, be used to weld an unassigned base metal which matches the composition and mechanical properties of the base metal identified on the PQR and WPS?

Reply ( 1 ): No.

Question (2): May a procedure, which is qualified using an unassigned base metal identified on the PQR and WPS by specification type and grade or chemical composition and mechanical properties, be used to weld an assigned base metal which matches the composition and mechanical properties of the base metal identified on the PQR and WPS?

Reply (2): No.

Question (3): May a welding procedure qualification record be revised to add the base metal specification type and grade and/or chemical composition and mechanical properties, provided this information can be substantiated by lab records or similar data?

Reply (3): Yes.
 
 


 
The only exception is for a material with the same UNS number as material listed in QW-422.
 
John

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From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of ali asghari
Sent: Wednesday, August 26, 2009 10:19 PM
To: materials-welding@googlegroups.com
Subject: [MW:3032] Re: 3018] p no

Dear all

is it correct that for steels that has a specification another of asme II find equivalent steel,P no ?

regards.

On Wed, Aug 26, 2009 at 9:26 AM, Muhammad Ijaz <m_ijaz@ffc.com.pk> wrote:

Dear Mano,

 

As per Stahlschluseel 2007, G4859 is equivalent to A351 (CT15C). So the corresponding P no. shall be P. no. 45 as per ASME IX 2007.

 

Regards,

Muhammad Ijaz

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From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Manoharan Kalimuthu
Sent: Tuesday, August 25, 2009 9:56 PM
To: materials-welding@googlegroups.com
Subject: [MW:3018] p no

 

Dear all

We have material G4859 (its in the ISO) I would like to know what is the P NO for this ....

Regards

Mano

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