Density, g/cm³

5.27

Solublity, g/100 g H₂O

0.001

Type of Material

polycrystalline,
synthetic

Crystal Structure

cubic, sphalerite
type structure with

graininess < 100 µm

Melting Point, at °C

1525

Thermal Conductivity, W/(m · K) at 25 °C

18

Thermal Expansion, 1/°C at -100 °C:

5.6 x 10^-6

Thermal Expansion, 1/°C at 0 °C:

7.1 x 10^-6

Thermal Expansion,1/°C at 200 °C:

8.3 x 10^-6

Specific Heat Capacity, J/(kg · K) at 25 °C

339.1

Dielectric Constant, at 25 °C

8.976

Young´s Modulus (E), GPa

67.22

Bulk Modulus (K), GPa

74.5

Elastic Coefficients

C₁₁ = 85.0
C1₂ = 50.2
C₄₄ = 40.7

Apparent Elastic Limit, MPa

55

Poisson´s Ratio

0.28

Lattice Constant, Å

5.66

Debye Temperature, °C

- 27

Rupture Modulus, MPa

55

Knoop Hardness, kg/mm²

105

Electric Resistivity, Ohm-cm

5 to 40

Spectrum