c-2900-26

A
THREAD TURNING
Grade descriptions
Grades for threading
Heat resistant and super alloys
Hardened materials
ENG
B
GC1020 (HC) – S20 (S05-S30)
A PVD-coated carbide grade for toughness demanding super alloy operations.To be
used at low cutting speeds.
CB7015 (BN) − H15 (H01-H25)
This grade has a low content of cubic boron nitride which makes it suitable for
threading applications in hardened steels.
C
GC1125 (HC) – S20 (S10-S25)
PVD-coated carbide grade for toughness demanding super alloy operations. To be
used at lower cutting speeds.
D
GC1135 (HC) - S25 (S10-S35)
Good allround PVD-coated carbide grade for toughness demanding super alloy
threading. To be used at low cutting speeds. First choice in S-area.
P
E
GC1105 (HC) - S15 (S10-S20)
A PVD-coated carbide grade with high hot hardness and good resistance against
plastic deformation giving even flank wear and outstanding performance.
F
GC1025 (HC) - S25 (S15-S35)
A PVD-coated grade for toughness demanding operations, recommended for
interrupted cuts. To be used at low cutting speeds.
G
Letter symbols specifying the designation of
hard cutting materials:
Ceramics:
CA Oxide ceramics containing primarily
aluminium oxide (Al 2O 3).
Diamond:
DP Polycrystalline diamond 1)
H
Hardmetals:
HW Uncoated hardmetal containing primarily
tungsten carbide (WC)
HT
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.
CC
Ceramics as above, but coated.
HC
Hardmetals as above, but coated
THREAD TURNING Grade descriptions
C 84