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Yttria Partially Stabilized Zirconia (TZP)

TZP is a grade of zirconia. The graph bars on the material properties cards below compare TZP to other oxide-based engineering ceramics (top) and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Compressive (Crushing) Strength

3080 MPa 450 x 103 psi

Elastic (Young's, Tensile) Modulus

200 GPa 29 x 106 psi

Flexural Strength

970 MPa 140 x 103 psi

Fracture Toughness

11 MPa-m1/2 9.9 x 103 psi-in1/2

Knoop Hardness


Poisson's Ratio


Tensile Strength: Ultimate (UTS)

450 MPa 65 x 103 psi

Thermal Properties

Maximum Temperature: Mechanical

1330 °C 2430 °F

Maximum Thermal Shock

310 °C 590 °F

Specific Heat Capacity

510 J/kg-K 0.12 BTU/lb-°F

Thermal Conductivity

2.2 W/m-K 1.3 BTU/h-ft-°F

Thermal Expansion

9.3 µm/m-K

Other Material Properties


6.0 g/cm3 370 lb/ft3

Dielectric Constant (Relative Permittivity) At 1 MHz


Dielectric Strength (Breakdown Potential)

9.0 kV/mm 0.35 V/mil

Electrical Resistivity Order of Magnitude

11 10x Ω-m

Common Calculations

Stiffness to Weight: Axial

19 points

Stiffness to Weight: Bending

33 points

Strength to Weight: Axial

21 points

Strength to Weight: Bending

22 points

Thermal Diffusivity

0.73 mm2/s

Thermal Shock Resistance

17 points

Followup Questions

Further Reading

Ceramic and Glass Materials: Structure, Properties and Processing, James F. Shackelford and Robert H. Doremus (editors), 2008

Ceramics and Composites: Processing Methods, Narottam P. Bansal and Aldo R. Boccaccini (editors), 2012

Springer Handbook of Condensed Matter and Materials Data, W. Martienssen and H. Warlimont (editors), 2005