welding between FSX-414 to FSX-414, (Co, Cr, Ni, Ta alloy)  must be proceeding with filler metals BH/BS.
As show below:

BH:  – ASME: MAR-M918
BS:  – Nozzaloy (trade mark)

At this moment we don’t find this material to use during this stoppage, and we need change the filler.

Our proposal is use as filler metal: HIGHT TEMPERATURE ALLOY 617
GTAW – TIG: 61-70
AWS 5.14 - ERNiCrCoMo-1

somebody have experience in this subject? tks