Products

Alumina Ceramic Parts

Additional information

Description

96 Alumina a high purity alumina ceramic with excellent mechanical, electrical, thermal, and chemical properties, benefiting from the following features:

Superior electrical properties
High mechanical strength and wear resistance
Moly-manganese metallized
Chemical and corrosion resistance
Excellent dielectric properties
Dense, non porous and vacuum tight

Application

Typical applications

Wear ceramic parts: Ceramic Nozzles, Ceramic, Sprayers Cyclones, Homogenising devices, Ceramic Linings, Milling Systems,

Ceramic Thread guides – Precision components: Ceramic Measuring Components, Ceramic Control systems, (Micro) dosing valves,

Electronic Components (electrical inductors, switches), Mechatronics.

Chemical Component

Aluminas
	Property	ASTM Method	Units	AL74 74%	AL95 95%	AL96 96%	AL98 98%
General	Crystal Size (Average)	Thin Section	Microns	13	11	8	7
	Color	—	—	White	Ivory	White Or Purple	White
	Gas Permeability	—	Atms-Cc/Sec	Gas Tight <10^-10	Gas Tight <10^-10	Gas Tight <10^-10	Gas Tight <10^-10
	Water Absorption	C 20-97	%	0	0	0	0
	Mechanical	Density	C 20-97	G/Cc	3.03	3.65	3.71
Hardness		Vickers 500gm	GPa (Kg/Mm²)	10.5 (1075)	11.5 (1175)	12.7 (1300)	12.7 (1300)
Hardness		—	R45N	78	79	81	81
Fracture Toughness		Notched Beam	MPam^1/2	2 – 5	3 – 4	4 – 5	4 – 5
Flexural Strength (MOR) (3 Point) @ RT		F417-87	MPa (Psi X 10³	241 (35)	310 (45)	358 (52)	393 (57)
Tensile Strength @ RT		—	MPa (Psi X 10³)	117 (17)	151 (22)	200 (29)	221 (32)
Compressive Strength @ RT		—	MPa (Psi X 10³)	1378 (200)	1827 (265)	2068 (300)	2241 (325)
Elastic Modulus		C848	GPa (Psi X 10⁶)	172 (25)	303 (44)	310 (45)	345 (50)
Poisson’s Ratio		C848	—	0.22	0.22	0.22	0.23
Thermal	C.T.E. 25 – 100° C	C 372-96	X 10^-6/C	5.5	6.1	6.0	6.2
	C.T.E. 25 – 300° C	C 372-96	X 10^-6/C	5.8	7.0	6.8	6.8
	C.T.E. 25 – 600° C	C 372-96	X 10^-6/C	6.3	7.7	7.5	7.6
	Thermal Conductivity @ RT	C 408	W/M K	4	19	23	29
	Max Use Temp	—	Fahrenheit (°F)	2800	3000	3100	3100
	Max Use Temp	—	Celsius (°C)	1540	1650	1700	1700
Electrical	Dielectric Strength (.125″ Thick)	D 149-97A	V/Mil	225	250	250	260
	Dielectric Constant @ 1 MHz	D 150-98	—	7.0	9.0	9.1	9.5
	Dielectric Constant	D 2520-95	—	—	9.2	9.1	9.4
	@ Gigahertz	D 2520-95	—	—	11.0	10.9	9.8
	Dielectric Loss @ 1 MHz	D 150-98	—	0.0012	0.0006	0.0004	0.0006
	Dielectric Loss	D 2520-95	—	—	0.0009	0.0007	0.0005
	@ Gigahertz	D 2520-95	—	—	12.5	10.9	9.8
	Volume Resistivity, 25°C	D 257	Ohms-Cm	< 1 X 10¹³	> 1 X 10¹⁴	> 1 X 10¹⁴	> 1 X 10¹⁴
	Volume Resistivity, 300°C	D 1829	Ohms-Cm	4 X 10¹⁰	5 X 10¹²	3 X 10¹²	8 X 10¹¹
	Volume Resistivity, 500°C	D 1829	Ohms-Cm	3 X 10⁷	3 X 10⁹	7 X 10⁹	2 X 10⁹
	Volume Resistivity, 700°C	D 1829	Ohms-Cm	2 X 10⁶	3 X 10⁸	4 X 10⁸	2 X 10⁸