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[MW:20413] RE: 20411] DSS vs SDSS welding.

No,
 
31803 is DSS while 32750 SDSS. Duplex alloys are used for very demanding applications. Hence the weld metal must match or exceed the requirements of base metal properties. Hence a new PQR would  be advisable.
 
What're the  design and service requirements by the way??
 
You need to consider all of these before proceeding for any welding on DSS or SDSS.
 
Appreciate your response.
 
Thanks.
 
Pradip Goswami, P.Eng,IWE
Welding & Metallurgical Specialist
Ontario, Canada
pradip_goswami@yahoo.ca
 


From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of S.Mohammed
Sent: Wednesday, March 26, 2014 6:13 AM
To: materials-welding@googlegroups.com
Subject: [MW:20411] DSS vs SDSS welding.

dear all,

ASME IX,B31.3.

WPS available for SA 182 F51 UNS 31803  P.10H with GMAW ER 2209-16 can be utilsed for welding SA 182 F53 UNS 32750  P 10H?( thk range is covered by WPS.).

what are the metalurgy cocern to be require?.

regards
mohd.

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