Does anyone have suggestions as what Sandvik grade would work well on AMS5666 (Inconel 625) for cut off and turning? I am having the cutoff insert chipping on the 5th part first chips on the bar stock side of inset then the next chipped on the part/pickoff side? this is with the speeds and feeds the Sandvik reps gave me of 160SFM and Feedrate of .002 per rev. Hope someone has something that works well.Thanks