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Re: [MW:10479] A No.

By Materials & Welding
Hi,
For WPS/PQR shall follow ASME Sec.IX. FOR A.No. it is an Essential Variable for processes as specified in QW404.5. Pls.refer QW 404.5 and QW252 to 265 as applicable.
find below the axtraction of QW404.5.
QW-404.5 (Applicable only to ferrous metals.) A
change in the chemical composition of the weld deposit
from one A-Number to any other A-Number in table
QW-442. Qualification with A-No. 1 shall qualify for
A-No. 2 and vice versa.
The weld metal chemical composition may be determined
by any of the following:
(a) For all welding processes—from the chemical analysis
of the weld deposit taken from the procedure qualification
test coupon.
(b) For SMAW, GTAW, and PAW — from the chemical
analysis of the weld deposit prepared according to the
filler metal specification, or from the chemical composition
as reported either in the filler metal specification or the
manufacturer's or supplier's certificate of compliance.
(c) ForGMAWandEGW—from the chemical analysis
of the weld deposit prepared according to the filler metal
specification or the manufacturer's or supplier's certificate
of compliance when the shielding gas used was the same
as that used to weld the procedure qualification test coupon.
(d) For SAW—from the chemical analysis of the weld
deposit prepared according to the filler metal specification
or the manufacturer's or supplier's certificate of compliance
when the flux used was the same as that used to weld
the procedure qualification test coupon.
In lieu of an A-Number designation, the nominal chemical
composition of the weld deposit shall be indicated on
the WPS and on the PQR. Designation of nominal chemical
composition may also be by reference to the AWS classification
(where such exists), the manufacturer's trade designation,
or other established procurement documents.

Thanks & Regards,

(Karthik)

Karthikeyan.S
QA/QC Manager
Getabec Energy Co.,Ltd.
379,Moo6,Soi8,Nikhomphatana,
Rayong-21180,
Thailand.
Phone: 0066 38 897035-8 (Off)
Fax: 0066 38 897034
Hand Phone: 0066 892512282


--- On Wed, 3/23/11, joshi jaydeep <jaydeep.p.joshi@gmail.com> wrote:

From: joshi jaydeep <jaydeep.p.joshi@gmail.com>
Subject: [MW:10455] A No.
To: materials-welding@googlegroups.com
Date: Wednesday, March 23, 2011, 11:43 AM

Does Weld Metal Chemical analysis (A No.) is an essential to be mentioned while qualifying PQR for meeting ASME B 31.3?
 
Please let me know the clause if possible mentioning the above details.
 
 
Regards,
Jaydeep

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