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Xiamen Unipretec Ceramic Technology Co., Ltd.

China Manufacturer with main products: Technical Ceramics, Advanced Ceramics, Alumina Ceramics, Zirconia Ceramics, Industrial Ceramics, Ceramic Rods, Ceramic Nuts, Ceramic Nozzles

Home  >Products Catalog > Alumina Ceramic > Al2O3 Ceramic Piston

Al2O3 Ceramic Piston

FOB Price: 3.00 - 5.00 USD/Piece
Supply Ability: 3,000 Piece/Pieces per Month
Shipping: express or air or ship
Payment Terms: T/T, Western Union, Other, Paypal
In Stock

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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Place of Origin: Fujian in China
Packaging Details: wooden case or carton box with foam

Quick Details

  • Brand Name: UNIPRETEC
  • Model Number: UPT-ALC011
  • Material: Alumina Ceramic
  • Application: Industrial Ceramic
  • Type: Ceramic Parts
  • Material: Alumina Ceramic
  • Purity: 95% 99%
  • Density: 3.65-3.9 g/cm3
  • Color: White, Ivory
  • Flexural Strength: 280-300 Mpa
  • Compressive Strength: 2000-2500 Mpa
  • Max. Working Temperature: 1500-1700 Celsius

Specifications

Alumina is the most mature of the engineering ceramics, offering excellent electrical insulation properties together with high hardness and good wear resistance but relatively low strength and fracture toughness.
                                                            

During the prodcution, small amounts of silica (SiO2), magnesia (MgO) and zirconia (ZrO2) may be added to alumina ceramics. The applications vary with the purity of Alumina.99% Alumina Ceramics are mostly used for high temperature crucibles, kiln furniture, special abrasion resistant parts, such as ceramic bearings, ceramic sealings or faucet discs; 95% Alumina Ceramics are usually applied for corrosion-resitant components or wear proof parts; 85% Alumina Ceramis can be metallized with metals like molybdenum, niobium, tantalum to use for electric vacuum devices.

                                                              
Properties of Alumina Ceramics
Alumina has a high melting point, high hardness and high mechanical strength, although mechanical strength is reduced at temperatures above 1000°C. Due to the relatively large coefficient of thermal expansion, thermal shock resistance is reduced. Alumina is an electrically insulating material, with a high electrical resistivity, increasing with purity.Good chemical stability of alumina, leads to a high corrosion resistance. It is insoluble in water and only slightly soluble in strong acid and alkaline solution.

                                                          
Various Application of Alumina Ceramics
1.Seal rings
2.Medical prostheses
3.Laser tubes
4.Electronic substrates
5.Ballistic armour
6.Thermocouple tubes
7.Electrical insulators
8.Grinding media
9.Threadguides
10.Wear components

                                                              

Characteristics Unit 95 Al2O3 99 Al2O3 ZrO2 GPSi3N4 BN Glass Ceramic
Crystal Structure - hexagonal hexagonal tetragonal hexagonal hexagonal -
Color - white ivory white gray white white
Density g/cm3 3.65 3.88 5.95 3.22 2.26 2.55
Water Absorption % 0 0 0 0 0.0-1.0 0
Young's Modulus Gpa 280 350 205 295 670 65
Vickers Hardness Gpa 14 20 12 18-20 - -
Flexural Strength  Mpa 280 300 900 650 51 100
Compressive Strength  Mpa 2000 2500 2200 2200 230 500
Thermal Conductivity  W/(m·k) 18-25 30 2.2 25 20 1.7
Thermal shock resistance Δ(℃) 220 180-200 280-350 450-650 >1500 25-100
Max. Working Temperature  1500 1700 850 1200 960 800
Volume Resistivity  Ω·cm >10^15 >10^14 >10^12 >10^14 10^13 10^16
Dielectric Constant (1 MHz ) - 9.5 9.8 26 8.2 4.08 6.02
Dielectric Strength kV/mm 16 22 - 16 375 40

                                                                    
About UniPreTec
UniPreTec provides high-performance ceramic products in Alumina, Zirconia, Zirconia Toughened Alumina, Silicon Carbide, Silicon Nitride and  further special materials. Along with these materials, we offer several machining from which to choose such as cutting, drilling, sawing, turning, grinding, polishing etc.. Furthermore, our technologies and equipments allow us to provide various and flexible forming processes, like dry pressing, isostatic pressing, extrusion, injection moulding and slip casting.

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