Product Description
99% 95% 96% Al2O3 Alumina Ceramic Substrate For LED Pcb Microelectronics 3.93g Cm3
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. Features
Alumina ceramic performance table

Property

Item
Data

Unit
99.8% 99% 95%






Mechanical Characteristics
color Ivory light yellow White -
density 3.93 3.85 3.7 g/cm3
Bending Strength 370 310 300 MPa
Compressive trength 2,500 2,400 2,300 MPa
Elastic Modulus 390 340 320 GPa
Fracture Toughness 4 3~4 3~4
MPa m^1/2
Weber Coefficient 12 12 12 m
Vickers Hardness 1,850 1,600 1,400 HV 0.5


Thermal Characterics
Coefficient of Line Thermal
Expansion
7~8 7~8 7~8
10^-6 K^-1
Thermal Conductivity
32 29 20
W/mK
Thermal Shock Resistance
(Put in Water)
280 200 250 ΔT °C
Max Working Temperature
1,700 1,600 1,500 °C


Electrical Characteristics
Volume Resistance at 20°C
>10^14 >10^14 >10^14 Ωcm
Dielectric Strength
15×10^6
15×10^6
15×10^6
V/m
Dielectric Constant 10 10 10 εr
One MHZ Dielectric Loss Angle
at 20°C
0.0001
0.0002
0.0004
tanδ

Chemical Characteristics
Nitric Acid (60%) 90°C
0.05 0.1 0.1

WT Loss mg/cm^2/day
Sulphuric Acid (95%) 95°C 0.22 0.34 0.3
Caustic Soda (30%) 80°C
0.04 0.95 0.9



We can provide a variety of high-performance engineering ceramics.

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Silicon Nitride Ceramics (Si3N4)
Silicon nitride exceeds other ceramics in thermal shock resistance. Its strength does not deteriorate at elevated temperatures, hence it is most appropriate for engine and gas turbine parts, including turbo charger rotors, diesel engine glow plugs and hot plugs.
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Alumina Ceramics (Al2O3)
Alumina is the most widely used type of ceramic. Its high dielectric properties are beneficial in electrical products, Alumina offers corrosion and wear resistance and high strength. It is widely used for industrial machine parts.
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Silicon Carbide Ceramic (SiC)
Silicon carbide retains its strength at elevated temperatures as high as 1400℃. It has the highest corrosion resistance of all fine ceramic materials. Applications include mechanical seals and pump parts.
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Zirconia Ceramics (ZrO2)
Zirconia ceramic has the highest strength and toughness at room temperature of all engineering ceramics. Before zirconia, ceramics were considered impractical for scissor or knife applications. With its excellent surface smoothness, zirconia is also used for pump parts.
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Aluminum Nitride Ceramics(AIN)
Aluminum nitride ceramics are usually gray or off-white. It has a low thermal expansion coefficient, excellent insulation performance, heat resistance, and a thermal conductivity of more than 180W/(m.k). It is an ideal package heat dissipation material for large integrated circuits.
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Machinable Glass Ceramic
Machinable glass ceramics are fluorophlogopite mica glass ceramics with synthetic mica as the main crystal phase. The main components are fluorophlogopite and glass with silica as the main component. Contains 55% fluorophlogopite and 45% borosilicate glass matrix.
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Microporous Ceramic Plate
Microporous ceramics refer to ceramic bodies containing a large number of open or closed tiny pores. The material is mainly alumina or carbonized. The surface is firm, the pores are uniform, the porosity is 35-40%, and the pore size ranges from 1 to 100 microns.
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Boron Nitride(h-BN)
Boron nitride material has the characteristics of resistance to high temperature and heat cycle. It will not react with many metals, ceramic rare earths and other materials, nor will it contaminate the product. Will not break in hot and cold environments.
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Other Ceramics
Our company can process a variety of ceramic materials and cemented carbide. We are currently processing experimental splines for many research institutes and schools. You can provide materials and we can process them according to drawings.
We can provide products according to your drawings or samples and performance requirements.
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Ceramic shaft and sleeve

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Plane processing

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Ceramic micro hole machining

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Ceramic processing thread

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Ceramic complex shaped parts

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Ceramic parts polishing