c-2900-26

Grade descriptions
GENERAL TURNING
A
ENG
Grades for general turning
Austenitic stainless steel, cast steel, manganese steel, alloy cast iron, malleable iron, free cutting steel.
Basic grades
Complementary grades
B
GC2015 (HC) – M15 (M05-M25)
A CVD-coated carbide grade for finishing and light roughing. A choice for continuous
cuts at moderate to high cutting speeds.
GC1115 (HC) − M15 (M05-M25)
A PVD-coated carbide grade. Recommended to be used at low feedrate or medium
cutting speed.
C
GC2025 (HC) – M25 (M15-M35)
A CVD-coated carbide optimized for semi-finishing to roughing. The grade performs
well in interrupted cuts.
GC1125 (HC) - M25 (M10-M30)
A PVD-coated grade for toughness demanding operations.
GC2220 (HC) - M20 (M15-M30)
A grade optimized for stainless steel. For external and internal turning in rough to
medium operations, wet and dry machining. For stable cutting conditions with
continous and light interruptions in high to average cutting speeds.
D
GC2035 (HC) – M35 (M25-M40)
A PVD-coated carbide. To be used for semi-finishing to roughing at low to moderate
cutting speeds.
E
F
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)
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.
H
CC
Ceramics as above, but coated.
HC
Hardmetals as above, but coated
GENERAL TURNING Grade descriptions
A 295