c-2900-26

A
PARTING AND GROOVING
Grade descriptions
Grades for parting and grooving
Hardened materials
ENG
B
Basic grades
CB7015 (BN) - H15 (H05-H20)
A cubic boron nitride composite for hardened ferrous materials. Suitable for both
continuous and interrupted cuts.
C
CB7025 (BN) - H15 (H10-H20)
A cubic boron nitride composite for hardened ferrous material. Suitable for cuts with
substantial interruptions at medium speeds in case hardened steels, bearing steels.
D
E
F
G
Letter symbols specifying the designation of hard
cutting materials:
Hardmetals:
Ceramics:
CA Oxide ceramics containing primarily
aluminium oxide (Al 2O 3).
Diamond:
DP Polycrystalline diamond 1)
HW
HT
Uncoated hardmetal containing primarily tungsten
carbide (WC)
Uncoated hardmetal, also called cermet, containing
primarily titanium carbides (TIC) or titanium nitrides
(TIN) or both
CM
CN
Mixed ceramics containing primarily
aluminium oxide (Al 2O 3) but containing
components other than oxides.
Nitride ceramics containing primarily
silicon nitride (Si 3N 4)
Boron nitride:
BN Polycrystalline boron nitride 1)
1) Polycrystalline diamond and polycrystalline
boron nitride are also named superhard cutting
materials.
H
HC
Hardmetals as above, but coated
CC
Ceramics as above, but coated.
PARTING AND GROOVING Grade descriptions
B 154