Properties of SiAlON Advanced Ceramics For Machining

Sialon is a reacted mixture of SiN, SiO2, Al2O3 and AlN.

Chemical Properties of Sialon

The chemical formula of Sialons are mentioned in the table below:

Property Value*
Chemical Formula SiN-SiO2-Al2O3-AlN

* All properties are at room temperature unless otherwise noted.

Mechanical Properties of Sialon

The mechanical properties of Sialon are mentioned in the table below:

Property Value*
Density 3.1-3.7 gm/cc
Hardness 1600-1800 Knoop
Tensile Strength 28 kpsi
Modulus of Elasticity 46 x 106 psi
Flexural Strength 110 kpsi
Compressive Strength 300-510 kpsi
Poisson's Ratio 0.21
Fracture Toughness 4-5 MPa m1/2

* All properties are at room temperature unless otherwise noted.

Electrical Properties of Sialon

The electrical properties of Sialon are mentioned in the table below:

Property Value*
Dielectric Strength 212 ac V/mil
Dielectric Constant 9.3(@ 1 MHz)
Volume Resistivity >1014 ohm-cm

* All properties are at room temperature unless otherwise noted.

Thermal Properties of Sialon

The thermal properties of Sialon are mentioned in the table below:

Property Value*
Coefficient of Thermal Expansion 2.7-6.8 x 10-6/°C
Thermal Conductivity 18-25 W/mK
Specific Heat 0.21 cal/g°C
Maximum Working Temperature 1700°C
Shock Resistance 300°C Diff.

* All properties are at room temperature unless otherwise noted.

About Insaco

For over 60 years, 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.

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

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

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