Hello experts,
I hope you can shed some light on the issue. I developed a WPS for GTAW (stringer and hot pass) and FCAW (fill and cap.) Code used was SEC.9 and the base material was 4130 to API 5L X70. We did have impacts so I created one WPS for 4130 to API 5L X70 (P1 G3) material and also created one WPS for 4130 to P1 materials when there is no impacts required. Now my question is, will I be able to weld 4130 to itself? I have looked at the code and I'm kind of confused. Being that the 4130 is an unassigned metal I'm not sure if I am qualified to weld 4130 to itself. In QW-403.5 it says, "In addition, when base metals of two different PNumber Group Number combinations are qualified using a single test coupon, that coupon qualifies the welding of those two P-Number Group Numbers to themselves as well as to each other using the variables qualified." So am I qualified to weld 4130 to 4130 or do I have to make a new PQR and WPS to do so? If you need any other additional info from my end please let me know, thanks.