Fastener Properties - Zirconia

The ceramic material properties given below are averages. Those not specifically measured by Ceramco, Inc. have been collected from the literature.

Select Properties of Ceramco PSZ
Physical
Composition¹	5.4 weight % Y₂O₃
Density²	6.00 g/cm³
Porosity³	0% (impervious)
Color	Off-white
Mechanical
Hardness, Knoop	11.7 GPa
4-point Bend Strength (MOR)	760 MPa (110 ksi)
Thermal
Maximum Use Temperature	2200°C (3992°F)
Coefficient of Thermal Expansion (CTE, 25-700°C)	11.2x10^-6°C^-1
Thermal Conductivity (at 20°C)	2 W/m·°K (14 BTU·in/ft² ·hr·°F)
Electrical
Dielectric Strength	51 Volts/mil
Dielectric Constant (at 1MHz and 20°C)	28.0
Volume Resistivity (at 25°C)	>10¹³ ohm·cm
(at 500°C)	4.8x10³ ohm·cm

¹ Controlled by the Batch Composition

² Measured by Pychnometer Immersion Technique

³ per ASTM C 1161 – 02c.