Features
              - High hardness at normal temperature.
              - Hardness can be maintained comparatively even at higher temperatures.
              - High compressive strength compared with steel.
       Application
ISO class Grade Materials Cutting Methods Application Composition Features
P P 10 Steel Cast Steel Threading Turning
Milling
Medium-high speed
General Cutting
WC+Co+
Tic+TaC
TiC & TaC is added
for improving
heat & crater
resistance
P 20
P 30 Low-medium speed
Roughing
M M 10 Steel Cast iron
Stainless steel
Turning Milling Medium speed WC+Co+
TiC+TaC
Less TiC & TaC is
added. Better wear
and sock resistance,
but lessheat and
crater resistance
than P grades
M 20 Low speed
Heavy cutting
M 40
K K 10 Cast iron
Hardened steel
Nonferrous
Metal
Nonmetalics
Reaming Turnig Milling Finishing WC+Co No TiC or TaC.
Excellent mechanicla
wear resistance and
shock resistance
K 20 Medium speed
       Mechanical and physical properties
ISO class Grade Hardness
(HRA)
Transverse
Rupture
Strength
(§¸/§±)
Young's
modulus
(10§¸/§±)
Thermal
comductivity
(cal/sm¤ısec¤ıK)
Compressive
strength
(§¸/§±)
Thermal expansion
coefficient(10/¡É)
P P 10 92.7 >200 53 0.07 460 6.5
P 20 92.5 >210 54 0.08 480 6.0
P 30 91.2 >250 57 0.10 480 5.5
M M 10 92.8 >200 58 0.12 500 5.5
M 20 92.1 >250 57 0.15 490 5.5
M 40 89.1 >330 54 0.14 440 5.5
K K 10 92.7 >240 64 0.19 620 4.7
K 10 92.1 >260 62 0.19 530 5.0
Problem Cause Remedy
Cutting edge wear Flank wear Excessive cutting speed Reduce cutting speed
Edge chipping Vibration orchattering in machine tool,
holder or component
Check and adjust machine and tool alignment
Deflection of tool, part, fixture or machine Check all rigidity
Excessive cutting speed Reduce cutting speed
Off center set up Check concentricity not to exceed 0.02mm TIR
Corner chipping Excessive cutting speed Reduce cutting speed
Insufficient coolant supply Increase coolant pressure
Built up edge Insufficient cutting speed Increase cutting speed
Insufficient coolant supply Increase coolant pressure
Worn cutting edge Regring or replace new drill
Margin Improper seating of tool Check and adjust machine spindle,and fixture
Rough or angled entry/exit of hole Reduce feed
Chip cogging or jamming Increase coolant pressure and adjust feed to optimize chip-formation
Insufficient coolant supply Increase coolant pressure
Excessive cutting speed Reduce cutting speed
Long stringy chips Improper speed and feed Adjust spped and feed
Tool life too short Flank wear increase too fast Reduce cutting speed
Drillbreakage Off center set up Check set up rigidity of machine, tool, and fixture
Improper cutting condition Check cutting parameters, possibly reduce feed
Burrs on exit Excessive axial force Reduce the width of edge preparation
Oversize hole Improper cutting condition Check cutting datam increase cutting speed
Clamping chuck Check fit and clamping of tool
Undersize hole Tool cooling Check coolant fluid
Improper cutting condition Reduce cutting speed, increase feed