Accordingto Table QW-255.1 "Classification" is essential variable. As I understand classification changes from ERCCoCr-A to ERCCoCr-E. That means procedure qualification is required, am I right?
However for welder qualification "Classification" is not an essential variable according to Table...
I have a WPQR for GMAW overlay welding, filler mat AWS/ASME SFA - 5.21 ERCCoCr-A and base material WCB. and I have welder qualifications of this WPQR. However, customer needs filler material to be AWS/ASME SFA - 5.21 ERCCoCr-E.
If every essetial variables are same and only change is the filler...
