Dear Mr. Elavarasan,
Since your earlier WPS is qualified for P No 8 Gr 1 base metal with ER316L filler (F6), and your current
project base metal is UNS S31254 (P No 8 Gr 4) with ER2594 filler (also F6 but different alloy), you
cannot directly use the existing WPS for this project without requalification.
The change in base metal group (Gr 4) and filler metal alloy composition is an essential variable requiring
a new WPS and PQR qualification as per ASME Section IX.
You should prepare and qualify a new WPS using UNS S31254 base metal and ER2594 filler metal to align
with ASME Sec IX requirements and ensure weld integrity.
C Sridhar.
On Wed, 23 Apr 2025 at 16:58, Elavarasan Mech <elavarasan1861994@gmail.com> wrote:
Dear AllPlease clarify belowwe 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 meCODE ASME SEC IXregardsELAVARASAN--
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