I have a joint of dissimilar P91 to P92 .i don’t have qualified PQR of the same.But i have a qualified PQR of P92 to P92. Now my question is that can i use the PQR of P92 to P92 for dissimilar joint.please confirm. If yes then how?
I never dealt with P91 material but from my opinion you are good to go with the procedure since both P91 and P92 belongs to same Pnumber category ie.,P 15E I don’t think there is nothing hinder you to weld both of them together.
It is the Pnumber which is an essential variable for WPS.
Filler classification for P91 is ER90s-B9 for gtaw and for smaw E9018-B91.
Filler classification for P92 is ER90s-G for Gtaw and for Smaw E9018-B92.
For P91 and P92 P no and A.no. is same.i have some doubt with F no.please help
What is your doubt with f number please let me know.
For SMAW the F number is 4 and GTAW the F number is 6.
P92 having the same.so that we can use it.
I recommend to summary your question.
Background: PQR 1 qualified on plate/pipe, grade, thickess, P-Number, Group, position, with electrode, …
Question: Above supporting PQR qualify for plate/thickness, material grades, …
Above format may easy to answer and support by other members.
Yes you can.