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99.5 Alumina ceramic
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99.5% Alumina Ceramic Performance

   

99.5% Alumina Ceramic is white powder or fine sand, with good fluidity, stable performance, less soluble in acid and alkali solution, and good sintering performance.


As 99.5% Alumina Ceramic material for high alumina refractories, electromagnetic devices and polishing and grinding products.

High density and high impact energy can greatly improve the grinding efficiency.The bottom abrasion can ensure the purity of the 
99.5% Alumina Ceramic crushed material, and its wear resistance is 2030 times higher than the traditional ball-stone.Good chemical stability, corrosion resistance, can be used in acid medium.
  99.5% Alumina Ceramic
Application of 99.5% Alumina Ceramic :
precision bearing, instrument, instrument, pen making, mechanical parts, punching hole, oil field, hydrochloric acid laboratory, hardness measuring instrument, fishing gear, counterweight, decoration, finishing and other high-end industries.

99.5% Properties of Alumina

Mechanical properties Unit Parameter
The density of gm/cc (lb/ft3) 3.89
porosity % (%) 0
color beige
Bending strength MPa (lb/in2x103) 379
Modulus of elasticity GPa (lb/in2x106) 375
The shear modulus GPa (lb/in2x106) 152
Modulus of elasticity of volume GPa (lb/in2x106) 228
Poisson's ratio 0.22
The compressive strength MPa (lb/in2x103) 2600
hardness Kg/mm2 1440
Fracture toughness MPa•m1/2 4
Maximum no-load service temperature °C (°F) 1750
Heat energy    
Thermal conductivity W/m°K (BTU•in/ft2•hr•°F) 35
Coefficient of thermal expansion 10–6/°C (10–6/°F) 8.4
Specific heat J/Kg•°K (Btu/lb•°F) 880
electrical    
Dielectric strength ac-kv/mm (volts/mil) 16.9
permittivity @ 1 MHz 9.8
Dissipation factor @ 1 kHz 0.0002
The loss factor @ 1 kHz
Volume resistivity ohm•cm >1014 

Properties of Alumina/Aluminum Oxide (Al2O3)
1.Very good electrical insulation (1x1014 to 1x1015 Ωcm)
2.Moderate to extremely high mechanical strength (300 to 630 MPa)
3.Very high compressive strength (2,000 to 4,000 MPa)
4.High hardness (15 to 19 GPa)
5.Moderate thermal conductivity (20 to 30 W/mK)
6.High corrosion and wear resistance
7.Good gliding properties
8.Low density (3.75 to 3.9 g/cm3)
9.Operating temperature without mechanical load 1,000 to 1,500°C.
10.Bioinert and food compatible
 

99.5% Alumina Ceramic Products and Aplications
– Pieces, Plates, Boards, Trays, etc. in Alumina-Ceramic / Cordierite-Mullite
– Tubes, Rods, Rollers, Supports, etc. in Alumina-Ceramic / Cordierite-Mullite
– Protection, Thermocouples, Insulation, etc. in Alumina-Ceramic / Cordierite-Mullite
– Pieces, Plates, Tubes, Rods, Rollers, etc. in Zirconium Oxide
– others 


For more information about 99.5% Alumina Ceramic,please contact our engineers in time  >>> 99.5% Alumina Ceramic      99.5% Alumina Ceramic
99.5% Alumina Ceramic

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