Page 7 - CBN_2018
P. 7

Materials on Hardness Scale


             In order to machine materials with a high
             hardness level of 65 HRC, inserts with a
             higher level of hardness than carbide inserts
             are needed.

             Vickers Hardness                                                                                           PCBN INSERTS

                            PCD
              HIGH


                             PCBN

                                Ceramic
               Hardness Cutting speed  Cermet      Coated carbide











                                                         Carbide




                                                   Submicron carbide



                                                   Feed Toughness                                    HIGH
             Vickers Hardness




            4900HV




                            PCBN
            4500HV
            2300HV


                            Ceramic
            2100HV
            1800HV






                            Carbide
            1300HV





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