Is it possible to make a WPS for P1 G2 material with P1 G1 to P1 G1 impact test qualified PQR.
ASME IX 2019: not allowed, see QW-403.5.
See topic Welding Procedure Qualification
Group number is an essential variable when there is an impact requirement.
So u can’t weld a P1G2
If P1 Gr2 to P1 Gr2 (without Impact test requiring)=> we can use PQR P1 Gr1 to P1 Gr1 impact test qualified ( of course thickness in the range)
If P1 Gr2 to P1 Gr2 ( impact test is requried) => can not use PQR P1 Gr1 to P1 Gr1 ( see QW-403.5)