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various 96% alumina ceramic wafer

  • USD 1 - 10 / Piece  
  • 100 Piece/Pieces
  • HB
  • Electrothermal Ceramics
  • RoHS
  • HBM
  • Tag: ceramic wafer
Post Date : May 28
Product Details
Company Profile
Inquiry Records(6)

Item specifics

HB
Electrothermal Ceramics
RoHS
HBM
Alumina
China (Mainland),Jiangsu
dia 80/25*0.4mm

Specifications

1.wearable,no fading

2.smooth surface
3.not easy to burst
4.high quality and competitive price
5.no pollution

Performance:

1, Wearable, No fading, High mechanical strength

2, smooth surface, even and fresh colors

3, Good thermal conductivity, not easy to burst, no pollution

95%,99%,99.7% Al2O3 Material Parameters:

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

1450°C

1600°C

1650°C

Water absorption

%

0

0

0

ROHS Hardness

≥85

≥89

≥89

Flexural strength

20° C

MPa (psi x 103)

358 (52)

550

550

Compressive Strength

20° C

MPa (psi x 103)

2068 (300)

2600(377)

2600(377)

Fracture Toughness

K(I c)

Mpa m1/2

4-5

5.6

6

Coefficient of

thermal expansion

25-1000° C

1X 10-6/°C

7.6

7.9

8.2

Coefficient of

thermal conductivity

20° C

W/m °K

16

30.0

30.4

Thermal Shock Resistance

Tc

°C

250

200

200

Dielectricity constant

1MHz.25°C

9

9.7

9.7

Dielectric strength

ac-kV/mm (ac V/mil)

8.3 (210)

8.7 (220)

8.7 (220)

Volume Resistivity

100°C

ohm-cm

> 1013

> 1014

> 1014

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Material :95-99 Alumina Ceramic
Type : According to clients drawing

We manufactures custom technical ceramic parts and components ,covering a wide range of customer reuquirements .We make use of several forming and machining techniques to process components made from alumina, zirconia ,cordierite .These materials may be used in applications that require wear or coorosion resistance .high temperature capability ,or ceramic insulators for electrical resistance

Name

Unit

Alumina

Zirconia

Content

%

≥95

≥99

≥99.7

≥94

Density

g/cm3

3.65

3.80

3.90

6.00

Hardness (Hv0.5)

GPa

13.1

15.0

17.1

13.2

flexural strength

MPa≥

340

310

370

1000

Elasticity

GPa

300

330

350

200

Poisson's ratio

0.23

0.23

0.23

0.30

Max Tem.

°C≥

1400

1750

1800

1050

Heat expansion

×10-6/°C(40-800°C)

7.8

8.0

8.0

11.0

Thermo conductivity

W/m·K( 20°C)

22

28

31

2.6

Thermal Resistance

°C

200

200

230

300

dielectric strength

V/m

15×106

15×106

15×106

11×106

dielectric phase angle

(1MHz)

×10-4

4

2

1

16

SIC(1MHz)

9.2

9.8

9.9

33

Nitric Acid

(60%)90°C

WT Loss mg/cm2/day≤

0.12

0.10

0.05

≠0

Sodium hudroxide

(30%)80°C

WT Loss mg/cm2/day≤

0.53

0.26

0.04

0.08

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Alumina ceramic crucible characteristics:
1.high purity: Al2O3 > 99%, corrosive, good resistance
2. good tensile strength.

Alumina ceramic crucible physiochemical index

name

The square type Al2O3 crucible

chemical composition

Al2O3

more than 99%

R2O

less than 0.2

Fe2O3

less than 0.1

SiO2

less than0.2

volume density(g/cm2)

more than 3.80

apparent porosity(%)

less than1

Bending strength(Mpa)

more than 350

compression strength(Mpa)

more than 12000

dielectric constant (1MHz)

2

maximum temperature(°C)

1800

Detail more >>
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