Specification (SFA) : A 5.14(GTAW)
AWS classification : ER-NiCrMo-3(GTAW)
Hi,
P.Number and F number are different and the numbers cannot be same and substituted.
For ERNiCrMo-3 F-Number is 43. For A number You can check with the QW-442 along with your Filler metal certificate to compare the chemical composition.Since it is a nickel based alloy,you check with the composition of A number 10 requirments.
Pls.find below the extraction of ASME appropriate sections.
QW-404.37
A change in the composition of the depositedweld metal from one A-Number in table QW-442 to
65
any other A-Number, or to an analysis not listed in the table.
Each AWS classification of A-No. 8 or A-No. 9 analysis of
table QW-442, or each nonferrous alloy in table QW-432,
shall require separate WPS qualification. A-NumbersQW-404.5
(Applicable only to ferrous metals.) Achange 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 analysisof the weld deposit taken from the procedure qualification
test coupon.
(b)
For SMAW, GTAW, and PAW — from the chemicalanalysis 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.
Thanks & Regards,(Karthik)Karthikeyan.SQA/QC ManagerGetabec Energy Co.,Ltd.379,Moo6,Soi8,Nikhomphatana,Rayong-21180,Thailand.Phone: 0066 38 897035-8 (Off)Fax: 0066 38 897034Hand Phone: 0066 892512282
--- On Sat, 9/18/10, limesh M <limesh78@gmail.com> wrote:
From: limesh M <limesh78@gmail.com>
Subject: [MW:7073] F-No&A-No of ERNiCrMo-3
To: materials-welding@googlegroups.com
Date: Saturday, September 18, 2010, 8:08 PM
--Dear All,I want to prepare a WPS for ,material ASTM B 423 (P No-45).Process - GTAWConstruction Code - ASME B31.3Welding Code - ASME BPV SEC IXWhat is the F - No. of ERNiCrMo-3? 43 or 45?One of the WPS in my hand says 45 !!!I have reviewed ASME BPV SEC IX QW 432,F-No. section and found that 43.Now I need clarification from experts,which one is correct 43 or 45?What is the A - No. of ERNiCrMo-3? I have reviewed QW 422 A-Numbers section,but couldn't find.Is there any condition that P- no. and F- no. shall be same?Seniors, I need your help on this issue.Regards,Limesh
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