c-2900-26

Grade descriptions
THREAD TURNING
A
ENG
Grades for threading
P
Steel, cast steel, martensitic stainless steel, long chipping
malleable iron
Austenitic/ferritic/martensitic stainless steel, cast steel,
manganese steel, alloy cast iron, malleable iron, free
cutting steel.
B
GC1125 (HC) - P20 (P05-P35)
PVD-coated grade with very good wear resistance for varius steel threadings. To be
used at high cutting speeds and long cutting times.
GC1125 (HC) – M20 (M10-M30)
PVD-coated grade for stainless steels and other smearing materials at higher cutting
speed.
GC1020 (HC) - P20 (P10-P40)
Good, all-round PVD-coated grade for steel turning. Combines good wear resistance
with sharpness also in low carbon.
GC1020 (HC) - M20 (M10-M30)
Good all-round PVD-coated grade with good wear resistance and edge sharpness in
non-ferrous materials.
C
GC1135 (HC) − P25 (P10-P45)
Good allround PVD-coated grade with good wear resistance and edge line toughness
for varius steel threadings. To be used at medium cutting speeds.
GC1135 (HC) − M25 (M10-M35)
Good allround PVD-coated grade with good wear resistance and very good edge line
toughness for stainless steels and other smearing materials. To be used at medium
cutting speeds. First choice in M-area and toughness demanding threading
operations.
D
Cast iron, chilled cast iron, short chipping malleable iron.
Non ferrous metals
GC1125 (HC) - K15 (K05-K20)
PVD-coated grade. Combines the superior wear resistance of a coated grade with the
edge sharpness and toughness of an uncoated grade. Optimized for steel threading
and for medium to high speeds.
GC1125 (HC) - N25 (N15-N35)
PVD-coated grade. Combines the superior wear resistance of a coated grade with the
edge sharpness and toughness of an uncoated grade. Optimized for steel threading
and for medium to high speeds.
E
GC1020 (HC) – K10 (K01-K20)
Competitive, all-around threading grade. Works best at medium to low cutting
speeds, with a thin coating ideal for sharp cutting edges.
GC1020 (HC) – N25 (N10-N30)
Competitive, all-around threading grade. Works best at medium to low cutting
speeds, with a thin coating ideal for sharp cutting edges.
F
GC1135 (HC) − K20 (K10-K30)
Good allround PVD-coated grade with good wear resistance and edge line toughness
for varius steel threadings. To be used at medium cutting speeds.
GC1135 (HC) - N25 (N10-N30)
PVD grade optimized for stainless steel and heat resistant super alloys. The best
choice for sharp profiles in all materials and for low to medium 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)
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
THREAD TURNING Grade descriptions
C 83