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CeramTec AT 79 Alumina, 99.6%
| Category | Ceramic , Oxide , Aluminum Oxide |
| Manufacturer | CeramTec North America |
| Trade Name | |
| Port | Ningbo port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | CeramTec AT 79 Alumina, 99.6%.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
Aluminas exhibit good mechanical properties such as hardness, compressive and tensile strength, and elastic modulus. They perform well at elevated temperatures.
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 3.95 g/cc | 0.143 lb/in³ | DIN EN 623-2 |
| Water Absorption | 0.00 % | 0.00 % | Open Porosity; DIN EN 623-2 |
| Permeability | 0.00 | 0.00 | %, Gas |
| Weibull Modulus | 14 | 14 | DINV ENV 843-5 |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Vickers Microhardness | 2110 | 2110 | HV1; DINV ENV 843-4 |
| Tensile Modulus | 390 GPa | 56600 ksi | Young's; DINV ENV 843-2 |
| Flexural Strength | 470 MPa | 68200 psi | DIN EN 843-1 |
| Compressive Strength | 4000 MPa | 580000 psi | DIN 51067T1 |
| Poissons Ratio | 0.23 | 0.23 | DINV ENV 843-2 |
| Fracture Toughness | 4.00 MPa-m½ | 3.64 ksi-in½ | K<sub>IC</sub> (SEVNB); DIN CEN/TS 14425-1 |
| Shear Modulus | 159 GPa | 23100 ksi | Calculated |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 7.50 µm/m-°C @Temperature 20.0 - 100 °C |
4.17 µin/in-°F @Temperature 68.0 - 212 °F |
DIN EN 821-1 |
| Specific Heat Capacity | 0.900 J/g-°C | 0.215 BTU/lb-°F | DINV ENV 821-3 |
| Thermal Conductivity | 30.0 W/m-K | 208 BTU-in/hr-ft²-°F | DIN EN 821-2 |
| Maximum Service Temperature, Air | 1500 °C | 2730 °F | |
| Maximum Service Temperature, Inert | 1500 °C | 2730 °F |
| Component Elements Properties | Metric | English | Comments |
|---|---|---|---|
| Al2O3 | 99.6 % | 99.6 % |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Volume Resistivity | 5.00e+8 ohm-cm @Temperature 400 °C |
5.00e+8 ohm-cm @Temperature 752 °F |
IEC 672-1 |
| 5.00e+14 ohm-cm @Temperature 20.0 °C |
5.00e+14 ohm-cm @Temperature 68.0 °F |
IEC 672-1 | |
| Dielectric Constant | 9.0 @Frequency 1.00e+6 Hz |
9.0 @Frequency 1.00e+6 Hz |
IEC 672-1 |
| Dielectric Strength | 18.0 kV/mm | 457 kV/in | IEC 672-1 |
| Dielectric Loss Index | 0.0050 @Frequency 9.00e+9 Hz |
0.0050 @Frequency 9.00e+9 Hz |
IEC 672-1 |
| Descriptive Properties | Value | Comments |
|---|---|---|
| Ra = Arithmetic Mean Roughness Value (µm) | <0.1 | |
| Thermal Shock Resistance R1 (K) | 127 | calculated; R1 = [s? (1-µ)] / (a·E) |
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