Product Details

Specifications

high alumina ceramics
-Mechanical strength
-Wear resistant
-High hardness
-Customized

electric high alumina ceramics product(Electronic Insulating)

Product Description

Features:

1) A variety of specifications available.

2) Satisfy various technical request

3) Lower medium spoilage

4) Good insulation performance and high temperature resistance

5) Stiffness texture

6) High strength

7) OEM, ODM and OBM are welcomed

Alumina ceramic is kind of structural ceramics, with insulation resistance, voltage resistance, high strength, good thermal conductivity, dielectric loss, stable electrical performance characteristics. Used in electronic ceramic substrates, ceramic electrical insulation, vacuum devices, devices porcelain, spark plugs and other products. We can make the part by hot injection pressing, dry pressing, isostatic pressing and extrusion productive technology etc

Performance
Item		Unit	95 Al₂O₃	96 Al₂O₃	99 Al₂O₃
Physical Characteristics	Bulk density	g/cm³	3.6	3.6	3.9
Physical Characteristics	Water absorption	%	0	0	0
Mechanical Characteristics	Flexural strength	Mpa	320	340	360
	Hardness Vickers	Gpa	12.2	13.5	15.6
	Elastic modulus	Gpa	280	320	370
	Poisson’s ratio	-	0.22	0.23	0.23
Thermal Characteristics	Linear expansion coefficient	(20⁰C-500⁰C) 10^-6/⁰C	7.1	7.2	8
	Thermal conductivity	w/(m.k)	16	24	32
	Specific Heat	10^-3J/(kgK)	0.78	0.78	0.9
Electrical Characteristics	Dielectric constant (1MHZ)	-	9	9.4	9.9
	Dielectric loss angle	*10^-4	15	5	1
	Dielectric strength	*10⁶V/m	12	15	15
Processing technology
Process range (mm)
Outside Diameter	1---300
Inside Diameter	0.5---300
Length	0.5---600
Accuracy of working (mm)
Perpendicularity	0.001
Concentricity	0.001
Roundness	0.0005
Straightness	0.005
Parallelism	0.01
Planeness	0.005
Roughness	0.005
Fit clearance	0.005

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