K-GRAPHITE END MILLS

COGO’s Own Coating Method (CVD Diamond Coating) High resistance and performance when to cut graphite multiple product Line.

DIAMOND Coated End Mills for Graphite CVD diamond is a binderless-pure crystal, delivering identical properties of single diamond crystal.
COGO is applying the lastest CVD coating technology which has no residual Stress at the interface for extending tool life.

Property CVD Diamond Mono Diamond PCD K10
(W/m↟K) Thermal Conductivity ~1000 2,000 560 110
(Gpa) Hardness   80~100 50~100 50 18
(MPa↟m1/2) Toughness   5~6 3.4 8~9 10.5
(Gpa) Tensile force   400~800 1,000~3,000 1260 -
(Gpa) Compressive strength   16.0 9.0 7.6 6.1
(Gpa) TRS   1.3 2.9 1.2 2.4