[MW:30467] Qualification of Hard-facing overlay welding using Ultimet

Dear Experts,

 

We have a qualified PQR and WPS for Hardfacing overlay welding of Stellite 6 to C276 (UNS N10276; P-no.43 according to ASME IX QW-422)

 

The following applies to stellite:

CLASSIFICATION

AWS A 5.21: ER CoCr-A

EN ISO 14700: RZ Co2

DIN 8555: WSG 20-G0-40-CTZ

 

Used process: GTAW

 

Now the client wants us to do Ultimet hard facing overlay welding on Hastelloy C276.

 

For the Ultimet solid wired we found:

CLASSIFICATION

AWS 5.21: no class

UNS R31233

ASTM: B815

DIN: W.Nr. 2.4681

DIN CoCr26Ni9Mo5W

 

According to ASME IX, QW-432, all A5.21 is F-no.72 Filler wire

 

QUESTION:

Is it allowed to use above mentioned PQR (F-no.72 to P-no.43) to make a WPS for this job, or do we have to qualify a new PQR?

 

Looking forward to your valuable response,

 

Best regards,
Hans Smithuis
Valve Specialist / Welding Coordinator
Red Point Alloys BV     email    hans@redpoint.nl
Radonstraat 2   phone   +31 79 363 2070
2718 TA  Zoetermeer     website www.redpoint.nl
The Netherlands           

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