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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  |
| Price | EMAIL US sales@lookpolymers.com |
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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