Comparison of Physical Properties of Ceramics
International Syalons offer a range of silicon nitride based sialon and zirconia advanced ceramics. These materials, Syalon and Zircalon, will potentially meet your needs in many testing industrial and engineering environments.
In an effort to show how our materials offer a unique set of physical properties, the graphs below compare some properties of our various grades of Syalon and Zircalon with a number of competitive advanced ceramic materials such as alumina (Al2O3), reaction bonded silicon nitride (RBSN), mullite and silicon carbide (SiC). (Comparative data comes from technical literature).
Modulus of Rupture
Room temperature modulus of rupture (MPa)
- RBSN
- 180
- Mullite
- 180
- Al2O3
- 350
- SiC
- 459
- Syalon 110
- 500
- Syalon 050
- 800
- Syalon 501
- 825
- Syalon 101
- 945
- Zircalon 5
- 1000
Modulus of rupture at 1000 °C (MPa)
- Al2O3
- 205
- Syalon 110
- 400
- SiC
- 430
- Syalon 101
- 670
- Syalon 050
- 750
Note RBSN, mullite, Syalon 501 and Zirconia 3Y-PSZ could not be tested at 1000 °C.
Hardness
Room temperature hardness (Hv0.3 Kg/mm2)
- RBSN
- 800
- Mullite
- 1100
- Syalon 110
- 1200
- Zircalon 5
- 1350
- Syalon 501
- 1370
- Al2O3
- 1400
- Syalon 101
- 1500
- Syalon 050
- 2000
- SiC
- 2200
Fracture Toughness K¹C
Fracture Toughness K¹C (MPam½)
- Mullite
- 2.0
- RBSN
- 2.5
- Al2O3
- 3.5
- Syalon 110
- 3.5
- SiC
- 4.3
- Syalon 501
- 5.7
- Syalon 050
- 6.5
- Syalon 101
- 7.7
- Zircalon 5
- 9.0
Thermal Shock Resistance
Thermal Shock Resistance (ΔT°C quenched in cold water)
- SiC
- 180
- Al2O3
- 205
- Zircalon 5
- 250
- RBSN
- 300
- Mullite
- 305
- Syalon 501
- 400
- Syalon 050
- 600
- Syalon 110
- 800
- Syalon 101
- 900
Thermal Conductivity
Room Temperature Thermal Conductivity (W/(mK))
- Zircalon 5
- 2
- Mullite
- 6
- RBSN
- 14
- Syalon 501
- 19.1
- Syalon 050
- 20
- Syalon 110
- 27
- Syalon 101
- 28
- Al2O3
- 29
- SiC
- 100
Please see our materials section for more information on the fine silicon nitride based sialon and zirconia ceramics we manufacture.
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