Partially Stabilized Zirconia (PSZ): Properties and Applications

International Syalons supply Zirconia 3Y-PSZ ceramics, suitable for applications in many different testing environments. These ceramics are the toughest monolithic ceramic and was developed to compliment International Syalons range of components for the metal forming industries.

Zirconia 3Y-PSZ is a partially stabilised zirconia characterised by high strength and toughness giving it excellent wear resistance as well as excellent corrosion resistance.

Physical and Mechanical Properties of Partially Stabilised Zirconia (3Y-PSZ)

The table below lists typical mechanical, thermal and electrical property data for Zirconia 3Y-PSZ.




3 point RT Modulus of Rupture (Specimen 3 x 3 x 50, span 19.05mm)



Weibull Modulus


RT Unit Tensile Strength



RT Compressive Strength



RT Young’s Modulus of Elasticity



RT Hardness (HRA)


RT Hardness (Vickers Hv0.3)



Fracture Toughness K1C









Thermal Expansion Coefficient




RT Thermal Conductivity



Thermal Shock Resistance


ΔT°C quenched in water

Maximum Use Temperature



RT Electrical Resistivity


ohm m

Typical physical property data obtained under test conditions. All properties have been measured by independent testing authorities. The values given only apply to the test bodies on which they were determined, and therefore can only be recommended values.

Applications of Partially Stabilised Zirconia 3Y-PSZ

Zirconia 3Y-PSZ is often used in applications that require excellent impact and wear resistance, specifically in the metal forming, and oil and gas industries. Weld location pins are one example of components that benefit from Zirconia 3Y-PSZs outstanding strength. The material also has excellent chemical corrosion resistance, which enables it to be used in chemical and process industry applications.

Exploiting Advantages of Partially Stabilised Zirconia 3Y-PSZ for Your Applications

The successful integration of ceramics into industrial and engineering systems requires close collaboration between you, the end-user, and the material suppliers, like International Syalons. Their Technical Specialists are available to discuss your requirements in detail and assist in exploiting the significant advantages which Zirconia 3Y-PSZ has to offer.

Advanced and Technical Ceramics Offered by International Syalons

In addition to Zirconia 3Y-PSZ, International Syalons supply a range of other ceramics. The range was tested against a number of competitive materials to compare their physical and mechanical properties. The following International Syalons ceramics and other competitive materials were tested:

  • Syalon 110
  • Syalon 050
  • Syalon 501
  • Syalon 101
  • Zirconia 3Y-PSZ
  • Reaction bonded silicon nitride (RBSN)
  • Mullite
  • Alumina (Al2O3)
  • Silicon Carbide (SiC)

The following physical and mechanical properties were examined:

  • Modulus of Rupture
  • Hardness measurements
  • Fracture toughness
  • Thermal shock resistance
  • Thermal conductivity

Modulus of Rupture of PSZ and Sialon Materials

Rupture Modulus at 1000°C of PSZ and Sialon Ceramics

Hardness of PSZ, Sialons, and Other Advanced Ceramics

Fracture Toughness of PSZ and Other Industrial Ceramics

Thermal Shock Resistance of PSZ, Sialons, and Other Industrial Ceramics

Thermal Conductivity of PSZ, Sialons and Other Industrial Ceramics

This information has been sourced, reviewed and adapted from materials provided by International Syalons.

For more information on this source, please visit International Syalons.


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