Product Description Products Description 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.
Alumina components can be formed by a variety of manufacturing techniques such as uniaxial pressing, isostatic pressing, injection molding and extrusion. Finishing can be accomplished by precision grinding and lapping, laser machining and a variety of other processes.

The Alumina ceramic components produced by Kamtai Ceramics are suitable for metallization in order to create a component that is easily brazed with many materials in subsequent operations. Elan Technology offers a range of alumina compositions to meet your most demanding applications.

Overview of Physical Properties
* Good electrical insulation
* High mechanical strength
* Excellent wear resistance
* Excellent corrosion resistance
* Low dielectric constant

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

Specification

Alumina Ceramic Properties			96% Alumina Ceramic	99% Alumina Ceramic
Item	Unit	Typical Values
Physical Properties
Color		White	Ivory
Density	g/cm3	3.7	3.85
Alumina Content	%	96%	99%
Gas permeability		0	0
Water Absorption		0	0
Mechanical Properties
MONS' Hardness	Grade	9	9
Rockwell Hardness	HRA	80	82
Vickers Hardness (Hv50)	Gpa(Kg/mm²)	15.7(1600)	15.7(1600)
Flexural Strength(20°C)	Mpa	300	330
Compressive Strength(20°C)	Mpa	2000	2000
Modulus of Elasticity	Gpa	275
Poisson's Ratio (20°C)		0.22-0.23
Fracture Toughness(20°C)	MPam1/2	3.5	4
Thermal Properties
Thermal Conductivity(20°C-	W(m.K)	25	27.5
Thermal Expansion	10-6/°C	6.5-7.5	7.6
Maximum Use Temperature	°C	1600	1650
Electronic Properties
Dielectric	KV/mm	>12	>10
Dielectric Constant	Er	9-10	9.1
Dielectric Loss Angle(1MHz)		0.0002	0.0002-0.0003

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