| Property* | Value |
|---|---|
| General | |
| Chemical Formula | SiN-SiO2-Al2O3-AlN |
| Mechanical | |
| 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 m½ |
| Electrical | |
| Dielectric Strength | 212 ac V/mil |
| Dielectric Constant | 9.3 (@ 1 MHz) |
| Volume Resistivity | > 1014 ohm-cm |
| Thermal | |
| 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. Engineering data are representative, and are not intended as absolute nor warrantable. Manufacturer’s Data shown is blended from multiple sources and therefore illustrates the marketplace. | |
Sialon is a reacted mixture of SiN, SiO2, Al2O3 and AlN
Wikipedia Reference for Sialon
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