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Re: [MW:35555] SS FILLER

By Materials & Welding
 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 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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