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Rulon Bearings

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Diamond, Natural
Categories: Carbon; Diamond; Pure Element

Key Words: Diamonds, Carbon, C
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Physical PropertiesOriginal ValueComments
Density 3.51 - 3.52 g/cc
a Lattice Constant 3.5597 Å
Volume Compressibility, 10^-10 m²/N 18
 
Chemical PropertiesOriginal ValueComments
Atomic Mass 12.01071995
 
Mechanical PropertiesOriginal ValueComments
Hardness, Knoop 8000
Knoop Microhardness 58 - 88GPa; (110),(111) faces
 79GPa
 56 - 102GPa; (001) face
Vickers Microhardness 98in GPa; (111) face
 88 - 147in GPa; (001) face
Hardness, Mohs 10
Abrasive Hardness 140000
Modulus of Elasticity 700 - 1200 GPa
Compressive Strength 8680 - 16530 MPa
Poissons Ratio 0.10 - 0.29
Fracture Toughness 3.40 MPa-m½
 
Electrical PropertiesOriginal ValueComments
Magnetic Susceptibility -0.00000588Atomic (cgs)
Dielectric Constant 5.5 - 5.7
@Frequency 1e+6 Hz
Dielectric Strength 1000 kV/mm
Dissipation Factor 0.00020
Band Gap 5.2 - 5.6 eV
@Temperature 0.000 °C
Electron Mobility, cm²/V-s 1800 - 2200
Hole Mobility, cm²/V-s 1200 - 1600
 
Thermal PropertiesOriginal ValueComments
CTE, linear 1.18 µm/m-°C
@Temperature 20.0 °C
Specific Heat Capacity 0.5079 J/g-°CCrystal
Thermal Conductivity 2000 W/m-K
Heat of Formation 1.900 kJ/molCrystal
Debye Temperature 2067 °C
Decomposition Temperature 707 °CTransition to graphite
 
Optical PropertiesOriginal ValueComments
Refractive Index 2.419
 
Component Elements PropertiesOriginal ValueComments
Carbon, C 100 %
 
Descriptive Properties
CAS Number7782-40-3
ColorClearImpurities (i.e. Nitrogen) and irradiation can change color to yellow, green, blue, pink, or brown.
Crystal StructureCubicDiamond - Space Group Fd3m

References for this datasheet.

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