grades

EHWA® is committed to the continued development of high quality dressers to meet the diverse needs of our valuable customers worldwide.

Diamond Types

wdt_ID	New column	PCD	PCBN	CVD Diamond	Mono / Natural Diamond
1	Definition	Polycrystalline diamond	Polycrystalline cubic boron nitride	Polycrystalline diamond (chemical vapor deposition method	Single crystal diamond
2	Applicable Work Material	Non-ferrous such as Al, copper alloys, etc. & nonmetallic such as wood working, advanced composite, etc.	Ferrous material such as cast iron, hardended steel, super alloy material, etc.	Non-ferrous such as Al, copper alloys, etc. & nonmetallic such as wood working, advanced composite, etc.	Superior edge quality for nonmetallic material
3	Hardness (Hv, GPa)	50 ~ 70	30 ~ 40	70 ~ 80	80 ~ 100
4	Magnified Structure

PCD

Polycrystalline Diamond (PCD), is a synthetic diamond product that is produced by sintering selected diamond particles with a metal matrix using very sophisticated temperature and high pressure technology.
PCD by its nature, is high in uniform hardness, and also more abrasive and shock resistant in all directions than natural diamonds because of its random-oriented structure of the diamond particles.

CVD

Similar to natural diamond
Colorless
Superior edge quality for ultra precision machining applications
Highly consistent material properties

PBCN

Polycrystalline cubic boron nitride (PCBN) is an artificially synthesized material. Except for diamond, PCBN is the hardest material. however, unlike diamond, PCBN is stable under conditions of high temperature (up to 1000°c), normally seen when machining hardened ferrous or super alloy materials. PCBN tools permit metal cutting with feed and speed rates that are much higher than conventional cutting tools.