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CoorsTek AD-94 Alumina (nom. 94% Al2O3)

Category Ceramic , Oxide , Aluminum Oxide
Manufacturer CoorsTek
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF CoorsTek AD-94 Alumina (nom. 94% Al2O3).pdf
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Material Notes:
Thermal Shock Delta Tc = 250°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 3.70 g/cc
0.134 lb/in³
ASTM C20
Water Absorption 0.00 %
0.00 %
ASTM C373
Particle Size 12 µm
12 µm
Average Crystal Size - Thin Section Test
Mechanical Properties Metric English Comments
Knoop Microhardness 11.5
11.5
1000 g load
Hardness, Rockwell 45 N 78
78
GPa
Tensile Strength, Ultimate 193 MPa
28000 psi
ACMA Test #4
Modulus of Elasticity 303 GPa
43900 ksi
ASTM C848
Flexural Strength 352 MPa
51100 psi
ASTM F417
Compressive Strength 2103 MPa
305000 psi
ASTM C773
Poissons Ratio 0.21
0.21
ASTM C848
Fracture Toughness 4.00 - 5.00 MPa-m½
3.64 - 4.55 ksi-in½
Shear Modulus 125 GPa
18100 ksi
Calculated
Thermal Properties Metric English Comments
CTE, linear 8.20 µm/m-°C

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

@Temperature 77.0 - 1830 °F
ASTM C372
Specific Heat Capacity 0.880 J/g-°C
0.210 BTU/lb-°F
ASTM E1269
Thermal Conductivity 22.4 W/m-K
155 BTU-in/hr-ft²-°F
ASTM C408
Maximum Service Temperature, Air 1700 °C
3090 °F
No Load
Electrical Properties Metric English Comments
Electrical Resistivity >= 1.00e+14 ohm-cm
>= 1.00e+14 ohm-cm
ASTM D1829
500000 ohm-cm

@Temperature 1000 °C
500000 ohm-cm

@Temperature 1830 °F
ASTM D1829
4.00e+9 ohm-cm

@Temperature 500 °C
4.00e+9 ohm-cm

@Temperature 932 °F
ASTM D1829
Dielectric Constant 9.1

@Frequency 1e+6 Hz
9.1

@Frequency 1e+6 Hz
Dielectric Strength 8.30 kV/mm
211 kV/in
ac; ASTM D116
Dielectric Loss Index 0.00040
0.00040
at 25°C, 1 MHz; ASTM D2520
Descriptive Properties Value Comments
Color White
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