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qcrobert (Industrial) (OP)
21 Jul 11 8:37
If welding a588 that is going to be exposed, bare weathered, multi pass groove with E8XTX A5.29 filler metal for atmosheric corrosion and weathering characteristics, can this be done with a pre-qualified wps?

A558 is a group II material, therefore can you write a wps just for A588 welded with 80 series filler or would you have to produce a pqr?Table 4.5 PQR essential variable changes - filler metal 1) Increase in filler metal classification strength.

BUT, Table 3.1, A588 with note b Special welding material and WPS(e.g. E80XX-X low alloy electrodes) may be required ect. ect.

So does that mean that you can write a WPS prequalified to meet the requirement, or does a PQR need to be performed, I'm a little stumped...

Thanks for advice/comments,Robert  

 
 
Helpful Member!  connectegr (Structural)
21 Jul 11 9:46
Maybe I will be smarter in my response over here in the AWS section.  I have also done a little homework.  Sorry for my learning curve.

Provided that your weld falls with parameters of Chapter 3; base metal, filler metal, welding process, preheat, etc.  So that all parameters are prequalified, then your WPS is prequalified and does not require physical testing.  I believe in your case all the parameters are prequalified.  

To give proper credit, I also asked the Chair of D1.1 and he clarified my poor understanding.    

http://www.FerrellEngineering.com

Mr168 (Materials)
21 Jul 11 9:59
Yes, you can use a prequalified WPS with an 80 series filler under certain circumstances.  You have to navigate around D1.1 Chapter 3 to find it, but the intent was to permit the use of fillers like an ER80s-Ni1 for A588 and A709 Gr.50W for weathering steel color match purposes.  See Table 3.3 and paragraph 3.7.3 (in the 2000 Edition, reference may have changed in the newer edition).   
qcrobert (Industrial) (OP)
21 Jul 11 11:26
Thank you both for your advice & research, I concurr but wanted reassurance.

QCRobert

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