C799 Alsint Alumina Al2O3 Ceramic Rings for Seal

• Application: Refractory, Industrial Ceramic
• Type: Ceramic Ring, Ceramic Plates
• Color: Yellow, White
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: YN900A
• Shape: Round, Square, Rectangular, Cylindrical
• Feature: Round, Square, Rectangular, Cylindrical
• Working Temperature: 1600c 1800c
• Purtiy: 99% Al2O3, 95%, 75%
• Material: Alumina Ceramic
• Transport Package: Pallet
• Specification: CUSTOMIZED
• Trademark: Yunnuo
• Origin: China
• HS Code: 8547100000
• Production Capacity: 500000 PCS/Year
• Package Size: 10.00cm * 8.00cm * 8.00cm
• Package Gross Weight: 0.500kg

Product Description

Alumina ceramic components

 

Alumina ceramic (Aluminum Oxide or Al2O3) is an excellent electrical insulator and one of the most widely used advanced ceramic materials. Additionally, it is extremely resistant to wear and corrosion. Alumina components are used in a wide range of applications such as electronics, pump components and automotive sensors.

 

Process of production:

uniaxial (die) pressing, isostatic pressing, injection molding, extrusion and slip casting ect.

 

Properties:

* Good electrical insulation
* High mechanical strength
* Excellent wear resistance
* Excellent corrosion resistance
* Low dielectric constant

 

Applicatons:

 

* Special environment and electronic substrates

* Pump seals and other components
* Wear resistant inserts
* Insulating washers or bushings
* Semiconductor components
* Aerospace components
* Automotive sensors
* Electrical or electronic insulators

 

 

Material data:

 

AL2O3%	60	75	80	85	92	95	99	99.7
Bulk Density (g/cm3)	3.0	3.1	3.3	3.4	3.6	3.7	3.81	3.91
Flexural strength (MPa)	205	280	215.7	230	312	304	340	370
Linear expansion coefficient (×10-6/C)(25-800C)	7.1	7.6	7.6	7.6	7.5	7.3	7.6	7.6
Thermal conductivity [w/(m.R)]	16	17	17	17	18	20	34	35
Dielectric strength (KV/mm)	10	10	10	10	10	10	10	10
Volume resistivity (Ω.cm) 20C	>1014	>1014	>10 14	>1014	>1014	>1014	>1014	>1014
300C	>1013	>1013	>10 13	>1013	>1013	>1012	>1010	>1010
Max C	1350	1100	1300	1350	1500	1600	1700	1800
Moh's hardness	7.5	7.5	7.5	7.5	8.5	8.8	9	9
Refractoriness	1800	1700	1800	1850	1920	2000	2030	2040