Properties For Machining of Silicon

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.

This information has been sourced, reviewed and adapted from materials provided by INSACO Inc.

For more information on this source, please visit INSACO Inc.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
Submit