Product Details
Alumina ceramic washer
1. Description
Alumina, or Aluminum Oxide, is a durable fine industrial ceramic
that is commonly used in a variety of processing applications.
Grind sintered alumina ceramics only using a diamond tool. Alumina
ceramic exhibits exceptional hardness and wear resistance, as well
as low corrosion, excellent electrical insulation and
bio-inertness. Alumina (Al2O3) is a very heat-stable ceramic
material of excellent temperature stability. Al2O3 ceramics with a
purity of 95% to 99% are the most commonly used kind of technical
ceramics. UNIPRETEC offers a variety of alumina ceramic shaping
methods, including molded injection, die pressing, slip casting,
extrusion, and cold isostatistically pressing.
Alumina is used in a wide spectrum of purity concentrations,
ranging from ultrapure to added-substance grades. Although the
purity of Al2O3 in finished products usually ranges between 90 and
99.8%, UNIPRETEC tends to work with materials with a purity of 95
to 99 percent.
2.Specificaion of Alumina ceramic
Accept any size according to the drawings
Accept any size according to the drawings
ITEM | UNIT | Alumina | A950 | Alumina | A990 |
Main Content | - | 95% Al2O3 | 99% Al2O3 |
Color | - | White / Pink | Ivory |
Density | g/cm3 | 3.7 | 3.85 |
Vickers Hardness | Gpa | 14 | 17 |
Flexural Strength | Mpa | 310 | 360 |
Compressive Strength | Mpa | 2,200 | 2,500 |
Electrical Resistivity | Ω·cm | >1014 | >1014 |
Dielectric Strength | KV/mm | 15 | 17 |
Dielectric Constant | 1 MHz | 8 | 9 |
Thermal Conductivity | W/m.K | 25 | 29 |
Max. Working Temperature | ℃ / °F | 1,500 / 2,730 | 1,650 / 3,000 |
Resistance to Thermal Shock | △T(℃) | 210 | 230 |
Thermal Expansion Coefficient (25 - 1,000 ℃) | 10-6/K | 7 - 9 | 7 - 9 |
√ High Voltage Insulator | √ High Purity, Max. 99.8% | √ Various Available Grades |
√ Hard and Wear Resistant | √ High Corrosion Resistance | √ High Mechanical Strength |
√ Good Thermal Conductivity | √ High Operating Temperature | √ Most Favorable Fine Ceramic |
Company Profile
Yixing City Kam Tai Refractories Co.,ltd is located in Yixing, the
Pottery capital of China. Our company is founded in 2006, it is a
professional refractory and ceramic company which cover research,
production, sales and after-sales service. Since establishment, we
adhere to principle of “Technological Innovation, Never Stop”,
continuously improve R&D and production process and equipment.
Moreover, we cooperate with famous university such like Liaoning
University of Science and Technology, Beijing University of Science
and Technology.
Main Products
We mainly manufacture industry furnace refractory material such as
Sic PLATE,Setter plate, Push plate, Pillar,Sagger, Technical
Ceramic, Furnace material and so on. Our product is widely used to
sinter Magnetic Material, Electronic Ceramic, Daily Ceramic, Powder
Metallurgy, Rare Earth Battery Material and so on. Our sandwich
setter plate, electronic ceramic used sagger, Lithium battery
cathode material sintering sagger are very good , and they have
been leader products in our field .
Company Vision
Since our establishment, we insist on “No best , Just Better” ,
aimed to be the top Supplier of Refractory material and Technical
Ceramic in the world.