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CeramaZirc Ultra Tough

Advanced High Fracture Toughness Zirconia Composite

Dubbed ‘ceramic steel’ Zirconia (ZrO2) ceramic materials offer a combination of high hardness, wear and corrosion resistance while still maintaining one of the highest figures for fracture toughness amongst ceramic materials.

CeramaZirc Ultra Tough is an advanced zirconia-based ceramic composite material based on partially stabilised zirconia and alumina platelets and is the latest and toughest composite to be introduced by Precision Ceramics.

  • Use temperatures up to 1500°C
  • Sintered to full density for a pore free structure and competitive price
  • No compromise between bending strength, hardness and fracture toughness
  • Remarkably high fracture toughness and impact resistance while maintaining above average values for bending strength and hardness
  • Toughening by crack deflection provided by a unique microstructure in a partially stabilised zirconia matrix
  • Increased resistance to hydrothermal ageing through Ceria partial stabilisation


The below table compares the typical properties of the different CeramaZirc materials:

PropertiesUnit3YZNano-HIPUltra-ToughUltra-Tough HIP
Flexural StrengthMPa1200140010001000
Compressive StrengthMPa21002100>2000>2000
Youngs ModulousGPa200200235235
Poisson Ratio0.300.300.290.29
Hardness HV0.5GPa13.514.51313
Fracture Toughness KICMpa/m2881717
Max Use Temperature°C100010001000 (under load)
1500 (no load)
1000 (under load)
1500 (no load)
Thermal Expansion CoefficientX10-6/°C1010
Thermal ConductivityW/mk22
Thermal Shock ResistanceʌT°C250250

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