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High Pure Aluminum Oxide / Al2O3 / Alumina Ceramic Plunger, Bending Strength ≥ 290MPa

High Pure Aluminum Oxide / Al2O3 / Alumina Ceramic Plunger, Bending Strength ≥ 290MPa

Certification : ROHS
MOQ : 2,000 PCS
Packaging Details : Several products in a carton, then wooden carte. Or following customers’ requirement.
Delivery Time : Depends on the quantity, always in a month.
Payment Terms : L/C、T/T、Western Union
Supply Ability : 5,000 pcs
Place of Origin : China
Brand Name : FFTC
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High Pure Aluminum Oxide / Al2O3 / Alumina Ceramic Plunger, Bending Strength ≥ 290MPa


Description:

Wearable ceramic is the special corundum ceramic that been sintered under 1700℃ with the main raw material of Al2O3 and flux of rare metal oxide. Using the high strength organic/inorganic bond to felt together, and then grinding to the size as drawing required.


Performance:

1. Big hardness, the ROHS hardness is HRA80-90, just inferior to diamond, the wearable ability is much better than the wearable steel and stainless steel

2. Wearable ability is excellent. Equal to 266 times of manganese steel, 171.5 times of high chrome cast-iron. Under the same working condition, can extend the equipment working life at least above 10 times.

3. Light weight, the bulk density is 3.6g/cm3, only half of steel, can alleviate the equipment burthen greatly.

4. Hard adhesives, good heat-resistant.


Main Technical parameters:

Alumina content≥95%

Bulk Density≥3.6 g/cm3

ROHS Hardness HRA≥85

Compressive Strength≥850 Mpa

Fracture Toughness KΙC ≥4.8MPa•m1/2

Bending strength≥290MPa

Coefficient of thermal conductivity: 16W/m.K

Coefficient of thermal expansion:7.2×10-6m/m.K


Applications:

The enterprises of Electricity,steel,smelt,mechanism,colliery,mine,chemical,cement,oil field ,will choose the different products according to their special requirements for the wearable mechanical instruments that works in the system of coal transfer, material transfer, milling, dust removing, and so on.

Specifications:

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℃

1600℃

1650℃

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℃


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℃

ohm-cm

> 1013

> 1014

> 1014



Product Tags:

Aluminum Oxide Ceramics

      

Alumina Ceramics

      
China Customized Inflatable Bumper Ball Game Bubble Adult Grass CE supplier

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