I don't think that on this matter there will be a remarkable difference between US and European standards but, as per ASME Sextion IX QW 403 you shall use the combination of these two grade steels I mean P1 to P8 for the qualification of welding procedure. See the following extraction from the standard:
"a change from base metal listed under one P number in QW/QB -422 to a metal listed another P number or to any other base metal. When joints are made between two base metals that have different P numbers, a procedure qualifiaction shall be made for the applicable combination of P numbers even though the qualifcation tests have been made for each of the two base metals welded to itself"
Therefore, in your case the different wps shall be qualified using exaclty to be welded materials.
As Mr. Pradip described the ER309L or E309Mo-17 would be a good choise as I have done a PQR using these consumables and got a satisfactory result.
best regards,
Elshan Feyzullayev.
Date: Wed, 6 Oct 2010 15:15:50 -0600
Subject: Re: [MW:7399] Fwd: Welding of LTCS cast to SS 316 Plate
From: parvizfarhadi@gmail.com
To: materials-welding@googlegroups.com
Many thanks for answers.
Karthik,
According to EN ISO 15607, is it possible to waive the WPS? (Please see in below for EN ISO 15607)
My undrestanding for ASME codes, no way to accpet previous welding experiance. Please correct me if I am wrong.
Cheers,
"
In EN ISO 15607, one of the methods of welding procedure qualification is by relating to previous welding experience.
Many manufacturers have considerable experience in fabricating welded structures. Welded components and structures may have been supplied to end users/clients for variety of applications and have performed satisfactorily over a period of time in service. If this experience is traceable and documented this provides a route to welding procedure qualification based on this experience."
On Wed, Oct 6, 2010 at 7:55 AM, Pat Brennan <pbrennan@globalfield.net> wrote:
WPS P1 to P8 material would be my answer per section IX. Patrick Brennan (CFM/VR-TESCO, LLC) 800.323.1393
From: parviz farhadi <parvizfarhadi@gmail.com>Date: Tue, 5 Oct 2010 20:19:55 -0700ReplyTo: materials-welding@googlegroups.comSubject: [MW:7382] Fwd: Welding of LTCS cast to SS 316 Plate
Hi there,We have a situation, our Valve contractor want to weld jachket material which is plate stainless steel TP316 Eurpian standard to LTCS cast material ASTM A 352 LCB standard. The reference welding code will be Europian standard. We asked for WPS, and they provide us WPS for CS to CS material, & SS to SS material acomponied by PQR, but WPS for LTCS to SS material. We asked for LTCS to SS material WPS and PQR, and they replied that within Europian standard they never used such WPS. My quesion is, "Is this answer is acceptable?", what I know according to ASME Sec IX, for wach welding type we should have exact WPS and PQR, otherwise is not acceptable.Could you please help me on this.Thanks & Regards,Parviz
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