Alumina Ceramics (Al2O3)
Tucson, Arizona, USA
Skyline Components, LLC
Due to their excellent characteristics in thermal, mechanical, electric
and chemical properties, alumina ceramics have wide applications in
the fields of ceramics, glass ceramics, industrial kilns, automobiles,
metallurgy, petroleum, chemical, steel, machinery, electric power,
aerospace, etc.

We can supply alumina ceramics in shapes of
crucible, tube, rod, plate, disc, wafer, ring, beam,
roller, shaft, screw, washer, sleeve, hunger, spacer,
holder, nozzle, frame, milling ball and so on.

Characteristics

  • High mechanical strength
  • High electrical insulation
  • Excellent thermal stability
  • High chemical durability and corrosion resistance
  • Excellent corrosion resistance
  • Excellent wear and abrasion resistance
Specification
Ceramic Parts
Ceramic Parts
Materials
A96
A99
Al2O3 content (%)
96
99.8
Density (g/cm^3)
3.7
3.9
Color
White
Ivory
Open porosity (%)
0
0
Mohs hardness
9
9
Tensile strength (MPa)
210
275
Flexural strength (MPa)
345
380
Compressive strength (MPa)
2100
2600
Elastic modulus (GPa)
300
380
Shear modulus (GPa)
120
150
Bulk modulus (GPa)
170
225
Poission’s ratio
0.21
0.22
Coefficient of thermal expansion (ppm/°C)
8.2
8.4
Thermal conductivity (W/m/K)
25
35
Specific heat (J/kg/K)
880
880
Maximum service temperature (°C)
1600
1750
Dielectric strength (Ac-kv/mm)
14.2
16.9
Dielectric constant (@1MHz)
9
9.7
Dissipation factor (@1kHz)
0.0011
0.0002
Volume resistivity (ohm-cm)
>10^14
>10^14
Alumina Crucible