Silicon is the second most abundant element on Earth. It is produced by the reduction of silica (SiO2). The main commercial applications for silicon are in semiconductors and solar cells.
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Chemical Formula of Silicon
The chemical formula of Silicon is provided in the table below:
| Property |
Value* |
| Chemical Formula |
Si |
* All properties are at room temperature unless otherwise noted.
Mechanical Properties of Silicon
The mechanical properties of Silicon are mentioned in the table below:
| Property |
Value* |
| Density |
2.33 gm/cc |
| Hardness |
1150 Knoop |
| Tensile Strength |
113 MPa |
| Modulus of Elasticity |
112 GPa(Young's) |
| Flexural Strength |
~300 MPa |
| Poisson's Ratio |
0.28 |
| Fracture Toughness |
3-6 MPa m1/2 |
* All properties are at room temperature unless otherwise noted.
Electrical Properties of Silicon
The electrical properties of Silicon are mentioned in the table below:
| Property |
Value* |
| Dielectric Constant |
11.8(@ 1 MHz) |
| Volume Resistivity |
10-3 ohm-cm |
* All properties are at room temperature unless otherwise noted.
Thermal Properties of Silicon
The thermal properties of Silicon are mentioned in the table below:
| Property |
Value* |
Coefficient of Thermal
Expansion |
2.6 x 10-6/°C |
| Thermal Conductivity |
156 W/mK |
| Specific Heat |
0.15 cal/g°C |
| Maximum Working Temperature |
1350°C |
* All properties are at room temperature unless otherwise noted.
Optical Properties of Silicon
The optical properties of Silicon are mentioned in the table below:
| Property |
Value* |
| Index of Refraction |
1.54 |
| Transmission Band |
0.30-37 Wavelength
(microns)
In the IR range |
* All properties are at room temperature unless otherwise noted.
About Inasco
Since 1947, Insaco has been synonymous with excellence in the development and production of high precision machined parts. As a custom fabricator of ceramic, glass, sapphire, and other hard materials, Insaco specializes in machining parts that often require tolerances measured in millionths of an inch, and wear properties that satisfy even the most demanding applications.
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This information has been sourced, reviewed and adapted from materials provided by INSACO Inc.
For more information on this source, please visit INSACO Inc.