Welding should be undertaken within the heat input range of 0.2-1.5 kJ/mm and with an interpass temperature of 150°C (300°F) maximum. Preheating or post-weld heat treatment is not necessary.
For gas-shielded arc welding use ER2594, and for manual metal-arc welding the covered electrode E2594.
Location, orientation of CVN impact test coupon, refer UG 84(c) – one set on HAZ and one set on weld, unless you have contractual requirement if any additional
Ferrite, PREN (if you need PREN an addition of 2% N max in shielding gas will give good results) and other corrosion tests, if required by contract
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of vipin george
Sent: Friday, September 25, 2009 9:09 AM
To: materials-welding@googlegroups.com
Subject: [MW:3308] Information on superduplex welding
Hi!
Can anyone please guide me in welding of super duplex stainless steels UNS S32750.Or is it possible i can get a sample WPS.Also please let me know what all test are required to qualify PQR as Per ASME Sec IX:
1)Apart from tensile testing, bend testing
Coupons thickness :16 Inch Sch 40 S (9.56 mm)
Process:GTAW & SMAW
MDMT: -29 degrees to 170 degree C
Preheat temp?
Max.Interpass temp?
Sour service
Is ferritic test required?
PWHT?
Impact test:Please advise the locations of impact:Is HAZ/WCL/FL for the whole process is required or is it required seperately for Gtaw & SMAW process.
Appreciate if anyone could reply to me at the earliest.
Thanks & Regards,
Vipin george
Specilaist services,
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