Cutting Tools Home / Korean / Contact us / Bookmark
Drill User’s Guide
Endmill user’s Guide
Carbide grade
Korea : cutting tools > Tech Information > Carbide grade
Carbide Grade Features

High hardness at normal temperature
Hardness can be maintained comparatively even at higher temperatures.
High compressive strength compared with steel

Carbide Grade Application

ISO class Grade Materials Cutting Methods Application Composition Features
P P10 Steel Cast Steel Threacing Turning Milling Medium-high speed General cutting WC+Co+TiC+TaC TiC&Tac is added for improving heat & crater resistance
P20
P30 Low-medium speed Roughing
M M10 Steel Cast iron Stainless steel Turning Milling Medium speed WC+Co+Tic+TaC Less Tic and Tac is added. Better wear and shock resistance. but less heat and creater resistance than P grades
M20 Low speed Heavy cutting
M40
K K10 Cast iron Hardened steel Nonferrous metal Nonmetallics Rearning Turning Milling Finishing WC+Co

No Tic or Tac.
Excellent mechanical wear resistance and shock resistance.

K20 Medium speed

Mechanical physical properties

ISO class Grade Hardness
(HRA)		 Transverse Rupture Strength
(Kg/㎟)		 Young's modulus
(10Kg3/㎟		 Thermal conductivity
(cal/cm.sec.K) 		Compressive strength
(Kg/㎟)		 Thermal expansion coefficient
(10/℃)
P P10 92.7 >200 53 0.07 460 6.5
P20 92.5 >210 54 0.08 480 6.0
P30 91.2 >250 57 0.10 480 5.5
M M10 92.8 >200 58 0.12 500 5.5
M20 92.1 >250 57 0.15 490 5.5
M40 89.1 >330 54 0.14 440 5.5
K K10 92.7 >240 64 0.19 620 4.7
K20 92.1 >260 62 0.19 530 5.0