Alumina Ceramic, also known as Aluminium Oxide or Al2O3, it is the one of the most widely used technical ceramic materials. Alumina ceramic components can be manufactured in a range of purities to suit for different applications. Forming methods will vary with the different size, shape and using requirement of products. Alumina ceramics are mainly used for mechanical, electrical, high temperature applications. 

Main Advantages:

*Good strength and stiffness
*Good hardness and wear resistance
*Good corrosion resistance
*High thermal conductivity
*High temperature resistance
*Electrical insulation
*Low dielectric constant

 

Technical details:

Purity	95% Alumina	96% Alumina	99% Alumina	99.5% Alumina	99.7% Alumina
Color	White/Pink	White	Ivory	Ivory	Ivory
Density (g/cm3)	3.65	3.72	3.88	3.90	3.92
Water Absorption (%)	0	0	0	0	0
Moh's Hardness	9	9	9	9	9
Flexural Strength (Mpa) (25℃)	352	358	364	379	375
Compressive Strength (Mpa) (25℃)	2000	2068	2500	2600	2500
Thermal Conductivity (W/m.K) (25℃)	18-25	≥24	27	30	30
Thermal Expansion Coefficient  (25-1000℃)(10-6mm/℃)	8	8	8	8	8
Therma Shock Resistance △T(℃)	220	220	180-200	180-200	180-200
Max. Working Temperature (℃)	1500	1650	1700	1750	1750
Dielectric Strength (kv/mm)	16	17.2	20	22	22
Electrical Resistivity (Ω.Cm) (25℃)	1014	1014	1014	1014	1014
Dielectric Constant (1MHz, 25℃)	9	9	9.7	9.7	9.8
Dielectric Loss (tan delta)  (1MHz, 25℃)	0.0004	0.0002	0.0001	0.0001	0.0001

Typical Applications of Alumina Ceramics:
1. Seal Rings
2. Plungers or pistons for valves
3. Electronic substrates
4. High temperature thermocouple tubes
5. Textile eyelets or guides
6. Electrical insulators
7. Wear resistant nozzles
8. Ceramic parts for high temperature furnace

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