Hi Park,
What's the design code? the grade of duplex S.S to be welded.?
From the face value Kobelco and Metrode FCAW products look good. The other alternative could be Bohler-Thyssen. You need to ask the manufacturer precisely about your requirement.
To the best of my knowledge FCAW process is not 100% reliable for Duplex S.S , when impact requirements are to be met at -40deg C or below.You may check the recommendations of API -938C also and get the best answer from consumable manufacturer.
Thanks.
Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist & Consultant
Ontario,Canada.
Email-pgoswami@sympatico.ca,
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of ???(PARK, JONG MIN)
Sent: Friday, July 15, 2011 11:02 PM
To: materials-welding@googlegroups.com
Subject: [MW:11741] FCAW for Duplex stainless steel
Dear Experts
I wan to use FCAW process for welding of duplex stainless steel.
However, CVN value shall be min.50 Joule at -46 degree C.
Is there any flux cored wire which meets this requirement?
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