Those two coatings are ok to use coolant. They will keep the edge of the tool sharp for a while longer than uncoated tooling. Coatings help chip evacuation too.
Coatings also allow for a higher temp range as well as higher RPMs and Feedrates, but not by that much.
Toby D.
"Imagination and Memory are but one thing, but for divers considerations have divers names"
Schwarzwald
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
www.refractotech.com