Cubic Zirconia Material Properties

Cubic Zirconia (CZ) is the cubic crystalline form of zirconium dioxide (ZrO2). It is generally colorless and relatively hard (8 – 8.5 on the Mohs scale). It is lightweight, wear resistant, is high density, has good compressive strength and is corrosion resistant. A high refractive index makes it ideal for optical applications. Lenses can be used as aspheric or collimating. Chemical stability of Yttrium stabilized Cubic Zirconia (ZrO2 + Y2O3) makes it suitable for use in the chemical industry.

Mechanical applications for precision balls include: bearings, valves, pumps, flow meters, metrology instrumentation, medical devices, probes

Optical applications for precision balls include: lenses, fiber optics, bar code readers, medical devices


Cubic Zirconia

PHYSICAL PROPERTIES
chemical composition ZrO2 + CaO or ZrO2 + Y2O3
crystalline structure cubic
MECHANICAL PROPERTIES
specific density 5.65 g/cm3
Hardness (Mohs scale) 8.5
THERMAL PROPERTIES
melting point 2700°C
OPTICAL PROPERTIES
refractive index 2.177
dispersion 0.065
birefringence isotrope
*values are for guidance only