Atwill International Co., Ltd.

China Manufacturer with main products: Copper Mould Tube, Water Jacket, Mould Assembly for Ccm, Flange for Casting Machine, Graphite Electrodes

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Alumina Ceramic Ring

Supply Ability: 100,000 Piece/Pieces per Month
Shipping: 3 days after confirm order
Payment Terms: L/C, T/T

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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: Jiangsu in China
Packaging Details: wooden case

Specifications


Alumina Ceramic Ring


High-purity Alumina Ceramic Seal Ring
Specifications:
1. High density;
2. High hardness;
3. Low thermal conductivity;
4. Chemical inertness;
5 .Resistance to molten metals;
6. Good Wear resistance;
7. High fracture toughness;
8. Good insulation performance and high temperature resistance.


Chemical Properties:


Table1: Technical Parameter Of Alumina Ceramics
Item   Test condition Unit& Symbol  95% 
Alumina  Ceramics
  99%
Alumina  Ceramics
99.7%
Alumina  Ceramics
The Main
Chemical Ingredient
    Al2O3 Al2O3 Al2O3
Bulk Density   g/cm3 > 3.6 3.89 3.96
Maximum Use Temperature   o C 1450 1600 1650
Water Absorption   % 0 0 0
ROHS Hardness     ≥ 85 ≥   89 ≥ 89
Flexural Strength 20 o C Mpa(psi*103 ) 358(52) 550 550
Compressive Strength 20  o C Mpa(psi*103 ) 2068(300) 2600(377) 2600(377)
  Fracture Toughness K(lc) Mpa m 1/2 4-5 5.6 6
  Coefficient Of Thermal Expansion 25-1000 o C 1*10 -6 /o C 7.6 7.9 8.2
  Coefficient Of Thermal Conductivity 20 o C W/mk 16 30.0 30.4
  Thermal Shock Resistance Δ Tc o C 250 200 200
  Dielectricity Constant 1MHz. 25 o C   9 9.7 9.7
  Dielectricity Strength   ac-kV/mm(ac V/mil) 8.3(210) 8.7(220) 8.7(220)
  Volumn Resistivity 100 o C ohm-cm 1013 1014 1014





Applications:
1, ceramic shaft for aquatic animals equipment filter pump
2, Ceramic plunger for high pressure cleaner.
3,Wearlessness,resistant acid-base and high intensity ceramic assembly apply to petroleum ,chemical and chemical industry.
4,Wearlesness, corrosion resistance, thermostable parts apply to precision machine.

Service Process

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