UNS 312254 falls under the category of Super Austenitic stainless steel and commonly know as 6Mo alloy or 254SMO.
The Filler wire you are using ER 2594 is not correct and it is for Super Duplex stainless steel with alloying ellements on lower side.
The correct Filler metal to weld UNS 31254 is ERNicrMo3 for which the F-No is 43 and hence you cannot use the existing WPS.
Thanks & Regards
J.Gerald Jayakumar
0091-8838619635
On Wednesday 23 April, 2025 at 04:58:05 pm IST, Elavarasan Mech <elavarasan1861994@gmail.com> wrote:
Dear All
Please clarify below
we have qualified WPS( P No 8 GR 1 To P NO 8 GR 1). Filler metal Er 316l ( Fno:6)
In our current project UNS S31254 ( PNO 8 Gr No 4)
We useing a filler wire ER2594 (Fno 6 )
Can we use above wps for this project with filler metal ER2594 Please guide me
CODE ASME SEC IX
regards
ELAVARASAN
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