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Materials for HPT Machining
PCBN INSERTS HPT (Hard Part Turning): PCBN and Ceramic hardness than carbide, offer a good option for
There are two main types of materials for
Ceramic inserts, which have a higher level of
HPT machining from 45 to 60 HRC.
inserts. In order to machine materials with
PCBN inserts are suitable for HPT machining
high hardness level of 65 HRC, inserts with
from 50 to 70 HRC.
higher level of hardness than a carbide insert
are necessary.
PCBN
POLYCRYSTALLINE CUBIC BORON NITRIDE
Boron Nitride is characterized by a very high Very good thermal conductor - heat removal
hardness level - close to synthetic diamond. is critical to achieve the desired outcome
and long tool life.
HB ISCAR materials on a hardness scale: HRc
Carbide up to 45Hrc, Ceramic from 45 up to 60Hrc, PCBN from 55 up to 70Hrc
760 70
Hardened Hardened Hardened
Materials Materials Materials
711 PCBN PCBN PCBN 65
552 55
Hardened Hardened Hardened
Materials Materials Materials
Ceramic Ceramic Ceramic
419 45
322 35
250 25
4 ISCAR