Ceria Stabilized Zirconia (CSZ)

Consider CSZ a top candidate when choosing a material for high strength and toughness in moist, challenging environments. With high flexural strength and very high compressive strength this material is ideally suited as a structural component in sensors, instrumentation, probes, pumps and fluid control systems.

CSZ offers a more robust Stabilized Zirconia material when low temperature degradation properties are in question, displaying a reduced vulnerability of molecular water attack compared to YTZP or MSZ, The ability of this material to withstand high temperature, wet operating conditions elevates its performance above other ceramic materials.

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Prime Features
High mechanical strength High temperature resistance
Very high wear resistance Very high impact resistance
Low thermal conductivity Thermal expansion suitable for ceramic-to-metal assemblies
High chemical resistance (acids/bases) High and low pH resistance
Resistance to low temperature degradation  
Typical Applications
Instrumentation Sensors
Seals Bearings
Desalination plant components Steam system instrumentation
Boiler probes Underwater sensors
Pump pistons Medical instrumentation
Pump liners Valve seats
Emission sensors Marine system components
Chemical pumps Fluid metering pumps
Fluid control valves Chemical analysis fluid control systems
Materials Property Chart
  Zirconias
  Property ASTM Method Units Ceria Stabilized Zirconia
Electrical Dielectric Strength (.125" Thick) D 149-97A V/mil 250
Dielectric Constant @ 1 MHz D 150-98 -- 30.0
Dielectric Loss @ 1 MHz D 150-98 -- 0.0010
Volume Resistivity, 25°C D 257 ohms-cm > 1 x 1013
Volume Resistivity, 300°C D 1829 ohms-cm 1 x 1010
Volume Resistivity, 500°C D 1829 ohms-cm 1 x 106
Volume Resistivity, 700°C D 1829 ohms-cm 5 x 103
Thermal C.T.E. 25 - 100° C C 372-96 x 10-6/C 6.9
C.T.E. 25 - 300° C C 372-96 x 10-6/C 8.1
C.T.E. 25 - 600° C C 372-96 x 10-6/C 10.5
Thermal Conductivity @ RT C 408 W/m K 3.5
Max Use Temp -- Farenheit (°F) 1000
-- Celsius (°C) 537
Mechanical Density C 20-97 g/cc 6.20
Hardness Vickers 500gm GPa (kg/mm2) 11.7 (1200)
Hardness -- R45N 78
Fracture Toughness Notched Beam MPam1/2 12
Flexural Strength (MOR)
(3 point) @ RT
F417-87 MPa (psi x 103 551 (80)
Tensile Strength @ RT -- MPa (psi x 103) 337 (49)
Compressive Strength @ RT -- MPa (psi x 103) 2000 (290)
Elastic Modulus C848 GPa (psi x 106) 200 (29)
Poisson's Ratio C848 -- 0.25
General Crystal Size (Average) Thin Section Microns 3
Color -- -- Yellow
Gas Permeability -- atms-cc/sec gas tight <10-10
Water Absorption C 20-97 % 0
Note: The information in this data sheet is for design guidance only. STC does not warrant this data as absolute values. Forming methods and specific geometry could affect properties. Slight adjustments can be made to some of the properties to accommodate specific customer requirements. Most of the dense materials in the table are resistant to mechanical erosion and chemical attack. STC has performed ASTM testing qualification for certain compositions, in accordance with ASTM D2442. Please consult our technical staff for appropriate material and specific test results.