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94% 95% 99% Al2O3 Aluminium Oxide Alumina Ceramics

2.0~3.0 USD
Min. Order: 100 Piece/Pieces
Trade Term: FOB
Payment Terms: L/C, T/T, WU
Supply Ability: 2000 pieces/month
Place of Origin: Fujian

Company Profile

Location: Xiamen, Fujian, China (Mainland)
Business Type: Manufacturer, Trading Company
Main Products: Boron Nitride, Boron Carbide, Silicon Nitride, Slicon Carbide, Zirconia Ceramics

Product Detail

Model No.: customized
Means of Transport: Ocean, Air
Brand Name: UNIPRETEC
Density: 3.65 - 3.95 g/cm3
Color: White, Ivory
Thermal Conductivity: 20 - 35 W/m.K
Compressive Strength: 2000 - 2500 Mpa
Flexural Strength: 200 - 350 Mpa
Max. Working Temp.: 1500 - 1700 C
Young's Modulus: 280 - 300 Gpa
Water Absorption: 0%
Crystal Structure: Hexagonal
Vicker's Hardness: 14 - 20 Gpa
Production Capacity: 2000 pieces/month
Packing: carton box with foam
Delivery Date: 30 days
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Product Description

Aluminium Oxide, Al2O3 is a major engineering material. It offers a combination of good mechanical properties and electrical properties leading to a wide range of applications.


Alumina can be produced in a range of purities with additives designed to enhance properties. A wide variety of ceramic processing methods can be applied including machining or net shape forming to produce a wide variety of sizes and shapes of component. In addition it can be readily joined to metals or other ceramics using metallising and brazing techniques.


Alumina based ceramics are by far the largest range of advanced ceramics made by UNIPRETEC. Due to the important combination of properties, we have thoroughly researched the behaviour and characteristics of our Alumina products to give you the best possible component.


Typical Alumina characteristics include:

* Good strength and stiffness

* Good hardness and wear resistance

* Good corrosion resistance

* Good thermal stability

* Excellent dielectric properties (from DC to GHz frequencies)

* Low dielectric constant

* Low loss tangent


Typical Alumina applications include:

* Seal rings

* Medical prostheses

* Laser tubes

* Electronic substrates

* Ballistic armour

* Thermocouple tubes

* Electrical insulators

* Grinding media

* Threadguides

* Wear components


Characteristics

Unit

95% Al2O3

99% Al2O3

 ZrO2

GP-Si3N4

HP-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  @R.T.

Mpa

280

300

900

650

51

100

Compressive Strength  @R.T.

Mpa

2000

2500

2200

2200

23

500

Thermal Conductivity  @R.T.

W/(m•K)

18-25

30

2.2

25

20

1.70

Thermal shock resistance

ΔT(C°)

220

180-200

280-350

450-650

>1500

25-100

Max. Working Temperature  @R.T.

1500

1700

850

1200

960

800

Volume Resistivity  @R.T.

Ω・cm

>10^15

>10^14

>10^12

>10^14

10^13

10^16

Dielectric Constant  (1 MHz @R.T. )

-

9.50

9.80

26

8.20

4.08

6.02

Dielectric Strength

kV/mm

16

22

-

16

375

40


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