Alumina (Al2O3) is a hard, chemically resistant material and has the ability to withstand very high temperatures in aggressive environments. Innovacera offers Alumina with various purity levels, including 99.8% and 99.0%. The level of purity, grain size, and density required is dependent on the rigors of the application and the component configuration.
Physical Properties:
1. High at elevated temperatures
2. High dielectric strength
3. Excellent electrical resistance
4. Abrasion resistance
5. High electrical insulation
Applications:
1. Electric appliance industry
2. Automotive industry
3. Mechanical industry
4. Engineer industry
Material Properties:
| Item | Test Condition | Unit& Symbol | 95% Al2O3 | 99% Al2O3 | 99.7% Al2O3 |
| The main chemical ingredient | Al2O3 | Al2O3 | Al2O3 | ||
| Bulk Density | g/cm3 | 3.6 | 3.89 | 3.96 | |
| Maximum Use Temperature | 1450° C | 1600° C | 1650° C | ||
| Water absorption | % | 0 | 0 | 0 | |
| ROHS Hardness | ≥ 85 | ≥ 89 | ≥ 89 | ||
| Flexural strength | 20° C | MPa (psi x 103) | 358 (52) | 550 | 550 |
| Compressive Strength | 20° C | MPa (psi x 103) | 2068 (300) | 2600(377) | 2600(377) |
| Fracture Toughness | K(I c) | Mpa m1/2 | 4 - 5 | 5.6 | 6 |
| Coefficient of thermal expansion | 25-1000° C | 1X 10-6/° C | 7.6 | 7.9 | 8.2 |
| Coefficient of thermal conductivity | 20° C | W/m ° K | 16 | 30 | 30.4 |
| Thermal Shock Resistance | Tc | ° C | 250 | 200 | 200 |
| Dielectricity constant | 1MHz. 25° C | 9 | 9.7 | 9.7 | |
| Dielectric strength | ac-kV/mm (ac V/mil) | 8.3 (210) | 8.7 (220) | 8.7 (220) | |
| Volume Resistivity | 100° C | ohm-cm | > 1013 | > 1014 | > 1014 |
We can supply the products according to customer' s drawings, samples and performance requirement.
We manufactures custom technical ceramic parts and components , covering a wide range of customer reuquirements . We make use of several forming and machining techniques to process components made from alumina, zirconia , cordierite . These materials may be used in applications that require wear or coorosion resistance . High temperature capability , or ceramic insulators for electrical resistance.
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Manufacturing Options
• Injection molding • Roll compacting • Extruding • Co-firing • Isostatic pressing • Dry pressing • Hot pressing • Tape casting • Slip casting |
Advanced Finishing Services
• Precision grinding and lapping • Laser machining • Engineering design and support • Metallizing • Alumina Ceramics-to-metal brazing • Specialized coatings • Threaded components • Precision motion components • Complex cleanroom assemblies |
Forming Method:
Dry Pressing: In dry pressing, the powder is poured into a rigid die and then pressed with a closely fitting punch. After pressing the punch is removed and the green compact is removed usually by ejection with a lower punch.
The shape and the size of the compact is limited by the frictio effects and that it has to be ejected from the die. Thus, the method is suitable for small components with relatively simple geometry.
Quality Control/Assurance Standard:
We are ISO certified: ISO9001:2008 ISO14001:2004 OHSAS18001:1999
The constant goal of Innovacera is a superior level of quality and sevice at competitive prices. Particular attention is given to the production of individual customer parts for both large and small runs. We implement a very sophisticated Quality Control process which we have our own customers certify. All parts that pass through our facility are visually and dimensionally inspected as well as calibrated. Our engineering staff is available for counsel and recommendations that will satisfy your ceramic requirements.
Superior quality of products with reliance is our prime consideration.
Feel free to contact us if you need any other assistance about our products.
We care and provide what you want!