Dec 17 2009
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.
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 Insaco
If you are considering an engineering application that you feel may be suited to Silicon then Insaco with 65 years of experience is second to none.
They have many decades of experience on machining and polishing Silicon materials for a wide range of applications and have been involved in many of the applications above when they were in their infancy.
Presently they have an 85,000 ft2 facility with more than 300 machine tools capable of grinding and polishing glass ceramics and other ceramic materials to useful geometries and tolerances.
.jpg)
This information has been sourced, reviewed and adapted from materials provided by INSACO Inc.
For more information on this source, please visit INSACO Inc.