No direct experience but CPMS90V has boatload of carbon and vanadium =carbides and it is going to be rather nasty at 58HRC compared to something like plain high carbon steel.
CBN would hold up best but if this is just one piece I'm not sure it is worth the cost and experimentation.
Seco TH1000 carbide grade has been also mentioned here about hundred times.
CBN would hold up best but if this is just one piece I'm not sure it is worth the cost and experimentation.
Seco TH1000 carbide grade has been also mentioned here about hundred times.