Metengr and Weldtek,
Thanks for your input on the parameters and what success you have had. I will give it a try with the ER70S-2 on the GTAW since I have that in-house already. It that fails I will try using a filler with Ni as suggested.
First a little back ground information. In production (pipe spools to B31.3) I will be using SA-333 GR 6 (P1/G1) / A350 GR LF2 (P1/G2) / SA-420 GR WPL6 (P1/G2) which will be supplied impact tested to -50F. I am looking to limit the number of PQRs so for the procedure testing I am looking to...