c-2900-26

Grade descriptions
PARTING AND GROOVING
A
ENG
Grades for parting and grooving
Cast iron, chilled cast iron, short chipping malleable iron.
Basic grades
Complementary grades
B
GC4325 (HC) - K25 (K10 - K35)
An all-round CVD-coated grade with excellent combination of high wear resistance
and good edge security. To be used in grooving and turning operations at medium to
high cutting speeds. Also good in parting off tubes.
GC3020 (HC) – K15 (K05-K25)
A very high wear resistant CVD-coated grade for high cutting speeds in grooving and
turning under good conditions. Due to its excellent hot hardness it is also effective
on hard cast-iron.
C
GC3115 (HC) – K15 (K05-K25)
A CVD-coated grade for high cutting speeds in grooving and turning under good
conditions. Due to its excellent hot hardness also effective on hard cast-iron.
H13A (HW) – K20 (K10-K30)
A uncoated grade with good abrasive wear resistance and toughness. For parting/
grooving operations
GC1125 (HC) - K30 (K15-K35)
A PVD-coated allround grade for toughness demanding operations and interrupted
cuts. This grade has a good edge security due to the superior coating. To be used at
medium to low cutting speeds
GC1025 (HC) - K30 (K15-K35)
A PVD-coated allround grade for toughness demanding operations and interrupted
cuts. To be used at medium to low cutting speeds.
D
GC1135 (HC) - K20 (K10-K30)
CVD-coated carbide grade for parting-off and other toughness demanding operations.
Very good bulk and edge line toughness. To be used at medium to low cutting
speeds.
E
F
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)
G
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.
HC
Hardmetals as above, but coated
CC
Ceramics as above, but coated.
H
PARTING AND GROOVING Grade descriptions
B 151