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CoorsTek Zirconia-Toughened Alumina, ZTA
Categories: Ceramic; Oxide; Aluminum Oxide

Material Notes: Thermal Shock Delta Tc = 300°C - Thermal shock tests are performed by quenching samples in water from different elevated temperatures. Delta Tc is the change in temperature which results in a sharp decrease in the flexural strength of the sample.

Data Provided by the manufacturer, Coors Ceramics Co.

Key Words: Zirconium Oxide, Aluminum Oxide
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Physical PropertiesMetricEnglishComments
Density 4.05 g/cc0.146 lb/in³ASTM C20
Water Absorption 0.00 %0.00 %ASTM C373
Particle Size 2.0 µm2.0 µmAverage Crystal Size - Thin Section Test
 
Mechanical PropertiesMetricEnglishComments
Knoop Microhardness 14.414.41000 g load
Hardness, Rockwell 45 N 8585GPa
Tensile Strength, Ultimate 290 MPa42100 psiACMA Test #4
Modulus of Elasticity 360 GPa52200 ksiASTM C848
Flexural Strength 450 MPa65300 psiASTM F417
Compressive Strength 2900 MPa421000 psiASTM C773
Poissons Ratio 0.230.23ASTM C848
Fracture Toughness 5.00 - 6.00 MPa-m½4.55 - 5.46 ksi-in½Notched Beam
Shear Modulus 146 GPa21200 ksiCalculated
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity >= 1.00e+14 ohm-cm>= 1.00e+14 ohm-cmASTM D1829
 1.00e+6 ohm-cm
@Temperature 1000 °C
1.00e+6 ohm-cm
@Temperature 1830 °F
ASTM D1829
 1.00e+9 ohm-cm
@Temperature 500 °C
1.00e+9 ohm-cm
@Temperature 932 °F
ASTM D1829
Dielectric Constant 10.6
@Frequency 1e+6 Hz
10.6
@Frequency 1e+6 Hz
Dielectric Strength 9.00 kV/mm229 kV/inac; ASTM D116
Dielectric Loss Index 0.00050
@Frequency 1e+6 Hz
0.00050
@Frequency 1e+6 Hz
ASTM D2520
 
Thermal PropertiesMetricEnglishComments
CTE, linear 8.30 µm/m-°C
@Temperature 25.0 - 1000 °C
4.61 µin/in-°F
@Temperature 77.0 - 1830 °F
ASTM C372
Specific Heat Capacity 0.885 J/g-°C0.212 BTU/lb-°FASTM E1269
Thermal Conductivity 27.0 W/m-K187 BTU-in/hr-ft²-°FASTM C408
Maximum Service Temperature, Air 1500 °C2730 °FNo Load
 
Descriptive Properties
ColorWhite

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CZ3A / 2741

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