Re: [MW:23215] Max.Base metal thickness qualified

Please see the relevant sketches attached.

ವಂದನೆಗಳೊಂದಿಗೆ / Best regards,

Nandesh Kumar Arasappa

P.S. : Please don't print this e-mail unless you really need to.

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On Tue, 5/5/15, S.Mohammed <mohd52100@gmail.com> wrote:

Subject: [MW:23210] Max.Base metal thickness qualified
To: materials-welding@googlegroups.com
Date: Tuesday, 5 May, 2015, 10:01 PM

pl find below reply from
mr nandesh kumar on previous post



Your query is
exactly as same as the below interpretation. 



Background:  A procedure qualification test
coupon using the same or different P-Number materials and
consisting of two plates of different thicknesses, T2 =
1-1/2" thick and T1 = 1" thick welded with a single
process.  The thicknesses meet on the same plane with
neither plate being tapered.  The joint is welded in
accordance with the sketch below.


 (Figure can not be attached;
left side plate 1" and right side plate 1.5", not
tapered only beveled ends) 


 Question (2):  Does this
test coupon qualify the WPS for both base metals for a
thickness range of 3/16" to 8" on both sides of the weld
joint?

 

Reply (2):  Yes.

 

Question (3):  Does this test coupon qualify
the WPS for both base metals of different P Numbers for a
thickness range of 3/16" to 8"?

 

Reply
(3):  No.  QW-202.4 requires both base metal thicknesses
be in accordance with QW-451.1.  Base metal T1  is
qualified 3/16" to 2" and base metal T2  is qualified
3/16" to 8", except as permitted by QW-202.4(b)(1).

 


QW 202.4 interpretations :


Interpretation: IX-95-12

Subject:            QW-202.4,
Dissimilar Base Metal Thicknesses

Date Issued:     March 17, 1995

File
No:            95-027

 

Question:  Does QW-202.4 include butt joints
and corner joints when joining dissimilar base metal
thicknesses when prepared with a groove?

 

Reply:  Yes. 



Interpretation: IX-98-20R

Subject:            QW-202.4(b),
Dissimilar Base Metal Thickness

Date Issued:     June 8, 2000

File
No:            99-539

 

Question:  When welding a corner joint with
dissimilar base metal thickness, the thickness of both
members must be within the qualified thickness range of the
WPS(s) being used.  How is the thickness for the thicker
member defined in sketches (a), (b) and (c) below?

 

Reply:  For sketch (a), the thicker
of T or ts.  For sketch (b), the thicker
of T or ts.  For sketch (c), the thicker of
flange a or hub b.


(Figures can not be attached)


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