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As is known to all, the main raw material of alumina ceramic sheet is alumina, which has certain unique advantages. It is known that alumina ceramic plate is a kind of material with high thermal condu...
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Product Name: OEM 99 alumina ceramic sealing rings high temperature supplier
Date of listing:2019-01-24
  • OEM 99 alumina ceramic sealing rings high temperature supplier OEM 99 alumina ceramic sealing rings high temperature supplier
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OEM 99 alumina ceramic sealing rings high temperature supplier

Alumina Ceramic:

Alumina ceramics are ceramic materials based on alumina (Al2O3) for thick film integrated circuits. Alumina ceramics have good conductivity, mechanical strength and high temperature resistance. It should be noted that ultrasonic cleaning is required. Alumina ceramics is a versatile ceramic. Because of its superior performance, it has been widely used in modern society, satisfying the needs of daily use and special performance.

 

Alumina ceramic properties: High hardness, high strength, wear resistance, corrosion resistance, high temperacture (1600°), good thermal diffusivity, good insulativity, low cost etc. 

 

Data Sheet↓

Item

Unit

Typical Values

Physical Properties

Color

White/Ivory

Density

g/cm3

3.85

Alumina Content

%

99%

Gas permeability

0

Water Absorption

0

Mechanical Properties

MONS' Hardness

82

Vickers Hardness (Hv50)

Gpa(Kg/mm²)

15.7(1600)

Flexural Strength(20°C)

Mpa

330

Compressive Strength(20°C)

Mpa

2000

Fracture Toughness(20°C)

MPam1/2

4

Thermal Properties

Thermal Conductivity(20°C-400°C)

W(m.K)

27.5

Thermal Expansion Coefficient

10-6/°C

7.6

Thermal Shock Resistance

△T°C

200

Maximum Use Temperature

°C

1650

Electronic Properties

Dielectric Strength

KV/mm

>10

Dielectric Constant

er

9.1

Dielectric Loss Angle(1MHz)

0.0002-0.0003

Volume Resistivity

Ω.cm

>10(14)


Application industry: Machinery, electronic, chemical, petroleum etc.
Specific application: Electrical ceramic substrate, plunger, sealing ring etc.

 


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