Clarification on WPS Applicability for SS316L to Duplex Welding per ASME Section IX

[Nambirajan Avudaiappan]

Dear Experts,

I hope this message finds you well.

I would like to seek your clarification regarding the applicability of an existing WPS.

We have successfully qualified a WPS for welding SS316L to Super Duplex using ER2594 filler metal. Both base materials are classified under P-No. 8 to 10H, and the filler metal falls under F-No. 6.

However, our actual production requirement involves welding SS316L to Duplex Stainless Steel using ER2209, which also falls under F-No. 6, and the base metals remain under P-No. 8 to 10H.

As per ASME Section IX, since the base metal P-Numbers and filler metal F-Numbers remain unchanged, could you please confirm whether the existing WPS is valid for this application as well, or if a new qualification is required?

Thank you in advance for your guidance and support.

Regards,

Nambirajan A

[Ranjit singh]

Dear sir,

We are facing problem in welding crack for desimilar metal like en19 hub dia 350mm thick 200mm and shaft en19 dia 140mm groove weld 28mm.

Process:- SMAW

Pre heating 200-250 degree.

Observation:- crack 

Regards,

Ranjit

9216671043

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[Nambirajan Avudaiappan]

Dear ranijith,

My question regarding the applicability of WPS only.

To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CA%2BE2JLO6r4aNeUGLsCJdcKXpwF9ju6wthJoEpub5-PSiZ6fovQ%40mail.gmail.com.

[Deerendra Karanth]

If supplementary requirements for impact testing are applicable, a change in A-number will require new WPS qualification; however, if impact testing is not required, the existing WPS can be used as long as the P-Number and F-Number remain unchanged.

BR, 

Deerendra.. 

To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CAJuyB2UjQfSLHGNbtSCDYfzsxxoD_sQ84Jqih_CO5xa1Xxu3Sg%40mail.gmail.com.

[Vishwas Keskar]

P10 H to P8 

ASME sec IX 

WPS is acceptable

If API582 or other Client specifications are applicable , then revisit the decision.

Review Discuss with QA ,Welding proceed accordingly 

Sent from my iPhone

On 1 May 2025, at 11:32 PM, Deerendra Karanth <dkar...@gmail.com> wrote:



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[Nambirajan Avudaiappan]

Thanks Vishwas sir, let me check with Customer specification once again. 

Best Regards, 

Nambirajan A

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