Refractory Mullite Cordierite Support

Product Description

1) A variety of specifications available.

2) Satisfy various technical request

3) Good insulation performance and high temperature resistance

4) Used in all electric products and electric heating products

Applications
1. Large power equipment
2. IC MOS tube, IGBT chip
3. High frequency power supply
4. Communication, mechanical equipment
5. Strong current, high voltage, high temperature and other thermal heat insulation  parts

Properties:

1. High Temperature Up to 1700ºC

2. High Voltage Resistance

3. High Mechanical Strength and Hardness

4. Excellent Insulation Performance

5. High Corrosion Resistance

6. Extremly Abrasion Resistance Performance

7. Wide Scope of Application

For indirect heating of liquids and gases where the element is fitted into a pocket in the process 

tank or system. These are installed in larged storage tanks so that the elements may be replaced without draining down the system or vessel.

 Data Sheet : 

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

Material	85 Al2o3	90 Al2o3	95 Al2o3	99 Al2o3
Al2o3	85%	90%	93%	99.30%
Fe2o3	≤ 1.0	≤ 0.5	≤ 0.5	≤ 0.3
Desnsity: g / cm3	3.4	3.5	3.6	3.85
Vickers Hardness	≥ 8.6	≥ 8.8	9	9
Water Absorption:%	≤ 0.2	≤ 0.1	≤ 0.085	≤ 0.01
Refractoriness:°C	1580 °C	1600 °C	1650 °C	1800°C
Flexural Strength:Mpa	180	200	240	280
Wear Rate( at room temperature,  erosion, 100 grinding)%	≤ 3	≤ 2.5	≤ 1	≤ 0.5

2:Application:

Electronical Vacuum decices, Cruibles, Insulation plates, Capacitors, Spaceflights, Traffic, Weave, Petro Chemical, Mine, Pharmaceutical Engineering, Communication Engineering and Archtectural, etc
Alumina ceramic sheet is mainly used in high power equipment, IC MOS tube, IGBT patch type thermal conduction and insulation, high frequency power supply, communications, mechanical equipment, strong current, high voltage and high temperature of product parts need to heat conduction and insulation.