Si (99.9%)

Al2O3

Melting point (˚C)

1414

2050

Density (Kg/m3)

2329

3980

Boiling point (˚C)

3265

2980

Atomic mass(Kg/mol)

2.8082 ´ 102

1.0196 ´ 101

Electrical resistivity (Ω∙m)

2300

1 ´ 1011

Thermal expansion coefficient (˚C1)

7.6 ´ 106 C1

8 ´ 106 C1

Thermal conductivity (W/(m∙K))

149

26 - 35

Specific heat (J/(g∙K))

0.7

0.9