Advanced Material Inserts
Cutting Material Groups
The extended standard DIN ISO 513 also includes ceramic
cutting materials and the superhard polycrystalline materials,
boron nitride and diamond, resulting in additional identifi cation
symbols for these cutting material groups.
The cutting tool materials are classifi ed by the combination
of their hardness and wear resistance characteristics.
Polycrystalline Diamond
DP
Cubic Boron Nitride
BN
CA
CM
Ceramics
CN + CC
HT
Cermets
Coated Hard Metal
HC
Uncoated Hard Metal
HW
toughness
hard metal
sub-group
(symbol)
feature
HW Uncoated WC-base hard metal
HT Uncoated TiC/TiN-base hard metal (cermets)
HC Coated hard metal
CA Al2O3-base oxide ceramics
CM Composite ceramics Al2O3 + metal carbide
CN Si3N4-base nitride ceramics
CC Coated ceramics
BL Cubic boron nitride (CBN) with low CBN content
BH Cubic boron nitride (CBN) with high CBN content
DP Polycrystalline diamond (PCD)
ceramics
cubic boron nitride
diamond
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