Alumina ceramic heating element

Specifications

Alumina ceramic heating element
-Good insulation
-Heat resistant
-Low thermal expansivity
-95% 99% alumina

Alumina ceramic heating element 

 

 

 

 

 

 

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) Used in all electric products, electric heating products and wear resistant machinery parts.

 

We can supply the products according to customer's drawings, samples and performance requirement.

 

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
Item		Unit	Steatite ceramic	95 Al2O3	96 Al2O3	99 Al2O3
Physical Characteristics	Heat resistance	0C	1100	1500	1550	1800
	Bulk density	g/cm3	2.7	3.6	3.6	3.9
	Water absorption	%	0	0	0	0
Mechanical Characteristics	Flexural strength	Mpa	145	320	340	360
	Hardness vickers	Gpa	5.7	12.2	13.5	15.6
	Elastic modulus	Gpa	120	280	320	370
	Poisson’s ratio		0.21	0.22	0.23	0.23
Thermal Characteristics	Linear expansion coefficient	(20-5000C) 10-6/0C	7.9	7.1	7.2	8
	Thermal conductivity	w/(m.k)	2.5	16	24	32
	Specific Heat	*10-3J/(kg*K)	0.75	0.78	0.78	0.9
Electrical Characteristics	Dielectric constant (1MHZ)	-	6.2	9	9.4	9.9
	Dielectric loss angle	*10-4	18	15	5	1
	Dielectric strength	*106V/m	18	12	15	15