
9 MILLING GRADES – OVERVIEW Marking of grades M 9 3 2 5 Operation type Coating / Substrate Generation ISO range 0 PVD Special D Drilling 1–9 01 – 05 1 CVD application 2 PVD M Milling Free 05 – 10 3 CVD 4 PVD T Turning Group K, H 10 – 20 5 CVD Grooving 6 PVD G and Group M, S 20 – 30 Parting off 7 CVD 8 PVD Universal 30 – 40 9 CVD B CBN 40 – 50 D PCD 764