Square White Alumina Cermaic Plate High Heat Resistant Ceramic Plate

1. Description 

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.

Our products with high mechanical strength, hardness, wear resistance, high temperature, chemical resistance and good characteristics. We manufactures custom technical ceramics, covering a wide range of customer requirements.Each product has passed the full(100%) inspection before export, you can safely buy it.

 

2. Main Features

Typical Alumina characteristics include:

Good strength and stiffness

Good hardness and wear resistance

Good corrosion resistance

Good thermal stability

Excellent dielectric properties (from DC to GHz frequencies)

Low dielectric constant

Low loss tangent

 

3. Specification 

 

 

Item	Test Condition	Unit Symbol	95% Alumina ceramics	99% Alumina ceramics	99.7% Alumina ceramics
The main chemical ingredient			Al2O3	Al2O3	Al2O3
Bulk Density		g/cm3	3.6	3.89	3.96
Maximum Use Temperature			1450°C	1600°C	1650°C
Water absorption		%	0	0	0
ROHS Hardness			≥85	≥89	≥89
Flexural strength	20° C	MPa (psi x 103)	358 (52)	550	550
Compressive Strength	20° C	MPa (psi x 103)	2068 (300)	2600(377)	2600(377)
Fracture Toughness	K(I c)	Mpa m1/2	4-5	5.6	6
Coefficient of thermal expansion	25-1000° C	1X 10-6/°C	7.6	7.9	8.2
Coefficient of thermal conductivity	20° C	W/m °K	16	30.0	30.4
Thermal Shock Resistance	Tc	°C	250	200	200
Dielectricity constant	1MHz.25°C		9	9.7	9.7
Dielectric strength		ac-kV/mm (ac V/mil)	8.3 (210)	8.7 (220)	8.7 (220)
Volume Resistivity	100°C	ohm-cm	> 1013	> 1014	> 1014