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CoorsTek AD-85 Alumina (nom. 85% Al2O3)

Category Ceramic , Oxide , Aluminum Oxide
Manufacturer CoorsTek
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF CoorsTek AD-85 Alumina (nom. 85% Al2O3).pdf
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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.Corrosion: Although all Coors Ceramics are highly resistant to chemical attack, Coors recommends obtaining specific application data from Coors before design finalization.Data Provided by the manufacturer, Coors Ceramics Co.
Physical Properties Metric English Comments
Density 3.42 g/cc
0.124 lb/in³
ASTM C20
Water Absorption 0.00 %
0.00 %
ASTM C373
Particle Size 6.0 µm
6.0 µm
Average Crystal Size - Thin Section Test
Mechanical Properties Metric English Comments
Knoop Microhardness 9.4
9.4
1000 g load
Hardness, Rockwell 45 N 73
73
GPa
Tensile Strength, Ultimate 155 MPa
22500 psi
ACMA Test #4
Modulus of Elasticity 221 GPa
32100 ksi
ASTM C848
Flexural Strength 296 MPa
42900 psi
ASTM F417
Compressive Strength 1930 MPa
280000 psi
ASTM C773
Poissons Ratio 0.22
0.22
ASTM C848
Fracture Toughness 3.00 - 4.00 MPa-m½
2.73 - 3.64 ksi-in½
Notched Beam
Shear Modulus 91.0 GPa
13200 ksi
Calculated
Thermal Properties Metric English Comments
CTE, linear 7.20 µm/m-°C

@Temperature 25.0 - 1000 °C
4.00 µin/in-°F

@Temperature 77.0 - 1830 °F
ASTM C372
Specific Heat Capacity 0.920 J/g-°C
0.220 BTU/lb-°F
ASTM E1269
Thermal Conductivity 16.0 W/m-K
111 BTU-in/hr-ft²-°F
ASTM C408
Maximum Service Temperature, Air 1400 °C
2550 °F
No Load
Electrical Properties Metric English Comments
Electrical Resistivity >= 1.00e+14 ohm-cm
>= 1.00e+14 ohm-cm
ASTM D1829
4.00e+8 ohm-cm

@Temperature 500 °C
4.00e+8 ohm-cm

@Temperature 932 °F
ASTM D1829
Dielectric Constant 8.2

@Frequency 1e+6 Hz
8.2

@Frequency 1e+6 Hz
Dielectric Strength 9.40 kV/mm
239 kV/in
ac; ASTM D116
Dielectric Loss Index 0.00090
0.00090
at 25°C, 1 MHz; ASTM D2520
Descriptive Properties Value Comments
Color White
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