1.95% alumina or steatite ceramic
2.heat compression molding,the alumina has been to improved insulation and mechanical strength.
3.The ceramics without crack, without burr,without pinholes,without gaps,without impurities, surface is smooth,
dye absorption is passed.
4.The ceramic body is compact, Density ≥ 3.65g/cm3, high mechanical shock resistance.
5.Linear Dimension Tolerance ≤ ±0.015mm,Aperture Tolerance ≤ ± 0.02mm,
Hole Deformation Size ≤ 0.01mm,Circumferential Deformation Size ≤ 0.1mm.
6.Insulation Resistance ≥ 100MΩ (have been checked by megohm in DC500V).
7.Dielectric Strength: AC2000V/50HZ/1min no breakdown phenomenon.
8.Linear expansion coefficient is slight,and less than 8.0 × 10-6mm /°C, and good for thermal shock performance.
9.Sintering temperature is 1700 °C, the use of a temperature not lower than 1300 °C, good corrosion resistance.
|Item ||Index||Unit ||Steatite ceramic ||95 Al2O3 ||96 Al2O3 |
|Physical Characteristics ||Bulk density ||g/cm3||2.7||3.6||3.6|
|Water absorption ||%||0||0||0|
|Flexural strength ||Mpa||145||320||340|
|Hardness Vickers ||Gpa||5.7||12.2||13.5|
|Elastic modulus ||Gpa||120||280||320|
|Poisson's ratio ||-||0.21||0.22||0.23|
|Thermal Characteristics ||Linear expansion coefficient ||20-5000C 10-6/0C||7.9||7.1||7.2|
|Thermal conductivity ||w/(m.k)||2.5||16||24|
|Specific Heat ||*10-3J/(kg*K)||0.75||0.78||0.78|
|Electrical Characteristics ||Dielectric constant(1MHZ) ||-||6.2||9||9.4|
|Dielectric loss angle ||*10-4||18||15||5|
|Dielectric strength ||*106V/m||18||12||15|
Packaging & Shipping
professional export packaging(cartoon&wooden box)
We can design upon the customers' detailed requirements.OEM production.package or logo can be make according to customers' need. professional fragile packaging services.
HIGHBORN is one of the leading high quality quartz glass and precise ceramics manufacturer and supplier in China.
Not only have we mastered the fabrication technology, our strength has always been based around listening to and understanding our customer's requirements and expectations.
Continuous improvement in all areas of our business is key to our grouth. What is equally important to us is maintaining in business, our inherent family values of trust, faimess and respect to our employees, suppliers and customers.