There is insufficient information given to determine whether the substitution would be permissible or not. The proposed substitution may be permitted provided the following questions can be answered satisfactorily:
· Is the original flux wire combination classified as per Section II Part C?
· Is the original flux; i.e. same brand and type, to be used with only a change in wire?
· Is the original flux classified with the EL8 wire as per Section II Part C?
· Is the strength designator of the classifications the same for both flux-wire classifications?
If the answer to all the forgoing is an unqualified YES then the substitution may be made per QW-404.9 and QW-404.5.
I would recommend that care be taken be taken in making such a substitution, but it is possible per Section IX.
John A. Henning
Welding & Materials
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of pgoswami
Sent: Monday, November 26, 2012 9:51 PM
To: 'kiran kumar'
Cc: materials-welding@googlegroups.com
Subject: [MW:16046] RE: welding with EL8
Hi Kiran,
For SAW the wire flux classification is important than filler metal alone. Sec-IX,QW-404.9 addresses this issue.
A change from EH14 (1.8% Mn) to EL8( less than 1% Mn) would cause significant reduction in weld metal mechanical properties.
Hence this change may not be allowed unless a new PQR is qualified.
Thanks.
Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
Ontario, Canada.
From: kiran kumar [mailto:chvvn.kirankumar@gmail.com]
Sent: Monday, November 26, 2012 3:54 AM
To: pgoswami@sympatico.ca; pgoswami@quickclic.net
Cc: materials-welding@googlegroups.com
Subject: welding with EL8
Dear Sir
Can we weld with Filler wire EL8 with supporting PQR EH 14 Filler wire (having same F no:6)
Material IS 2062
Construction code -BPVC Section IX
Process-SAW Process.
Thanking you
CH.V.V.N.KIRANKUMAR
+91 7898905072
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