Page 7 - CBN_2018
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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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