| |
| Physical Properties | Metric | English | Comments |
|---|
Density  | 2.3016 g/cc
@Temperature 1027 °C | 0.083151 lb/in³
@Temperature 1881 °F |
| | 2.3077 g/cc
@Temperature 827 °C | 0.083371 lb/in³
@Temperature 1520 °F |
| | 2.3136 g/cc
@Temperature 627 °C | 0.083584 lb/in³
@Temperature 1160 °F |
| | 2.3192 g/cc
@Temperature 427 °C | 0.083786 lb/in³
@Temperature 801 °F |
| | 2.3269 g/cc
@Temperature 127 °C | 0.084065 lb/in³
@Temperature 261 °F |
| | 2.329 g/cc
@Temperature 25.0 °C | 0.08414 lb/in³
@Temperature 77.0 °F |
| | 2.533 g/cc
@Temperature 1412 °C | 0.09151 lb/in³
@Temperature 2574 °F |
| Viscosity | 0.88 cP
@Temperature 1412 °C | 0.88 cP
@Temperature 2574 °F |
| a Lattice Constant | 5.43072 Å | 5.43072 Å |
| Volume Compressibility, 10^-10 m²/N | 0.306 | 0.306 |
| Surface Tension | 736 dynes/cm
@Temperature 1412 °C | 736 dynes/cm
@Temperature 2574 °F |
| |
| Chemical Properties | Metric | English | Comments |
|---|
| Atomic Mass | 28.0855 | 28.0855 |
| Atomic Number | 14 | 14 |
| Thermal Neutron Cross Section | 0.13 barns/atom | 0.13 barns/atom |
| X-ray Absorption Edge | 6.7446 Å | 6.7446 Å |
| | 105.05 Å | 105.05 Å |
| | 126.48 Å | 126.48 Å |
| | 126.48 Å | 126.48 Å |
| Critical Pressure | 537 bar | 403000 torr |
| Critical Density | 0.1207 g/cc | 0.004361 lb/in³ |
| Critical Molar Volume | 232.6 cm³/mol | 14.19 in³/mol |
| Electrode Potential | -0.450 V | -0.450 V |
| Electronegativity | 1.9 | 1.9 |
| Ionic Radius | 0.420 Å | 0.420 Å |
| | 0.650 Å | 0.650 Å |
| | 2.71 Å | 2.71 Å |
| | 3.84 Å | 3.84 Å |
| |
| Mechanical Properties | Metric | English | Comments |
|---|
| Knoop Microhardness | 11270 | 11270 |
| Hardness, Mohs | 7.0 | 7.0 |
| Modulus of Elasticity | 112.4 GPa | 16300 ksi |
| Compressive Strength | 120 MPa | 17400 psi |
| Bulk Modulus | 98.74 GPa | 14320 ksi |
| Poissons Ratio | 0.28 | 0.28 |
| Shear Modulus | 43.9 GPa | 6370 ksi |
| |
| Electrical Properties | Metric | English | Comments |
|---|
| Electrical Resistivity | 0.0100 ohm-cm | 0.0100 ohm-cm |
| Magnetic Susceptibility | -0.00000390 | -0.00000390 |
| Critical Superconducting Temperature | 6.70 - 7.10 K
@Pressure 12000 - 13000 MPa | 6.70 - 7.10 K
@Pressure 1.74e+6 - 1.89e+6 psi |
| Dielectric Constant | 11.8 | 11.8 |
| Band Gap | 1.107 eV | 1.107 eV |
| Electron Mobility, cm²/V-s | 1900 | 1900 |
| Hole Mobility, cm²/V-s | 500 | 500 |
| |
| Thermal Properties | Metric | English | Comments |
|---|
| Heat of Fusion | 1800 J/g | 774 BTU/lb |
| Heat of Vaporization | 10610 J/g | 4566 BTU/lb |
| CTE, linear | 2.49 µm/m-°C
@Temperature 25.0 °C | 1.38 µin/in-°F
@Temperature 77.0 °F |
| | 3.61 µm/m-°C
@Temperature 227 °C | 2.01 µin/in-°F
@Temperature 441 °F |
| | 4.15 µm/m-°C
@Temperature 527 °C | 2.31 µin/in-°F
@Temperature 981 °F |
| | 4.44 µm/m-°C
@Temperature 1027 °C | 2.47 µin/in-°F
@Temperature 1881 °F |
| Specific Heat Capacity | 0.794 J/g-°C | 0.190 BTU/lb-°F |
| | 0.115 J/g-°C
@Temperature -213 °C | 0.0275 BTU/lb-°F
@Temperature -351 °F |
| | 0.259 J/g-°C
@Temperature -173 °C | 0.0619 BTU/lb-°F
@Temperature -279 °F |
| | 0.557 J/g-°C
@Temperature -73.0 °C | 0.133 BTU/lb-°F
@Temperature -99.4 °F |
| | 0.713 J/g-°C
@Temperature 27.0 °C | 0.170 BTU/lb-°F
@Temperature 80.6 °F |
| | 0.785 J/g-°C
@Temperature 127 °C | 0.188 BTU/lb-°F
@Temperature 261 °F |
| | 0.832 J/g-°C
@Temperature 227 °C | 0.199 BTU/lb-°F
@Temperature 441 °F |
| | 0.849 J/g-°C
@Temperature 327 °C | 0.203 BTU/lb-°F
@Temperature 621 °F |
| | 0.866 J/g-°C
@Temperature 427 °C | 0.207 BTU/lb-°F
@Temperature 801 °F |
| | 0.883 J/g-°C
@Temperature 527 °C | 0.211 BTU/lb-°F
@Temperature 981 °F |
| | 0.899 J/g-°C
@Temperature 627 °C | 0.215 BTU/lb-°F
@Temperature 1160 °F |
| | 0.916 J/g-°C
@Temperature 727 °C | 0.219 BTU/lb-°F
@Temperature 1340 °F |
| | 0.933 J/g-°C
@Temperature 827 °C | 0.223 BTU/lb-°F
@Temperature 1520 °F |
| | 0.950 J/g-°C
@Temperature 927 °C | 0.227 BTU/lb-°F
@Temperature 1700 °F |
| | 0.967 J/g-°C
@Temperature 1027 °C | 0.231 BTU/lb-°F
@Temperature 1881 °F |
| | 0.983 J/g-°C
@Temperature 1127 °C | 0.235 BTU/lb-°F
@Temperature 2061 °F |
| | 1.00 J/g-°C
@Temperature 1227 °C | 0.239 BTU/lb-°F
@Temperature 2241 °F |
| | 1.01 J/g-°C
@Temperature 1412 °C | 0.241 BTU/lb-°F
@Temperature 2574 °F |
| Thermal Conductivity | 124 W/m-K | 861 BTU-in/hr-ft²-°F |
| | 20.9 W/m-K
@Temperature 1200 °C | 145 BTU-in/hr-ft²-°F
@Temperature 2190 °F |
| | 37.7 W/m-K
@Temperature 600 °C | 261 BTU-in/hr-ft²-°F
@Temperature 1110 °F |
| | 52.3 W/m-K
@Temperature 400 °C | 362 BTU-in/hr-ft²-°F
@Temperature 752 °F |
| | 66.94 W/m-K
@Temperature 1412 °C | 463.8 BTU-in/hr-ft²-°F
@Temperature 2574 °F |
| | 79.5 W/m-K
@Temperature 200 °C | 551 BTU-in/hr-ft²-°F
@Temperature 392 °F |
| | 105 W/m-K
@Temperature 100 °C | 725 BTU-in/hr-ft²-°F
@Temperature 212 °F |
| Melting Point | 1412 °C | 2574 °F |
| Boiling Point | 3265 °C | 5909 °F |
| Heat of Formation | 0.000 kJ/mol | 0.000 kJ/mol |
| | 450 kJ/mol | 450 kJ/mol |
| Debye Temperature | 372 °C | 702 °F |
| |
| Optical Properties | Metric | English | Comments |
|---|
| Refractive Index | 3.49 | 3.49 |
| Reflection Coefficient, Visible (0-1) | 0.30 - 0.70 | 0.30 - 0.70 |
| |
| Component Elements Properties | Metric | English | Comments |
|---|
| Silicon, Si | 100 % | 100 % |
| |
| Descriptive Properties |
|---|
| CAS Number | 7440-21-3 |
| Crystal Structure | Cubic |
| Solubility | Insoluble in H2O and Acid; Soluble in Alkaline |
Some of the values displayed above may have been converted from their original units and/or rounded in order to
display the information in a consistent format. Users requiring more precise data for scientific or engineering
calculations can click on the property value to see the original value as well as raw conversions to equivalent units.
We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding
error. We also ask that you refer to MatWeb's
terms of use regarding this information.
Click here to view
all the property values for this datasheet as they were originally entered into MatWeb.
