Tuesday, November 27, 2012

[MW:16056] RE: 16046] RE: welding with EL8

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.

Email-pgoswami@sympatico.ca,

pgoswami@quickclic.net

 

 


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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