Properties of Diamond

properties of diamond

DiaTiger® Diamond

Material To Be Machined

Carbide Grades To Coat

Company

Property	Value	Units
Hardness	10,000	kg/mm²
Strength, tensile	>1.2	GPa
Strength, compressive	>110	GPa
Sound velocity	18,000	m/s
Density	3.52	g/cm³
Young's modulus	1.22	GPa
Poisson's ratio	0.2	Dimensionless
Thermal expansion coefficient	0.0000011	/K
Thermal conductivity	20.0	W/cm-K
Thermal shock parameter	30,000,000	W/m
Debye temperature	2,200	K
Optical index of refraction (at 591 nm)	2.41	Dimensionless
Optical transmissivity (from nm to far IR)	225	Dimensionless
Loss tangent at 40 Hz	0.0006	Dimensionless
Dielectric constant	5.7	Dimensionless
Dielectric strength	10,000,000	V/cm
Electron mobility	2,200	cm²/V-s
Hole mobility	1,600	cm²/V-s
Electron saturated velocity	27,000,000	cm/s
Hole saturated velocity	10,000,000	cm/s
Work function	small and negative	On [111] surface
Bandgap	5.45	eV
Resistivity	10¹³ - 10¹⁶	Ohm-cm

(Ref. 'Synthetic Diamond - Emerging CVD Science and Technology', Spear and Dismukes, Wiley, NY, 1994).

Diamond Tool Coating • 661 Erie Avenue • North Tonawanda, NY 14120
Tel: 716.693.5050 • Fax: 716.693.5045 E-mail | Home