Alumina Ceramic Disc

Alumina Ceramic Disc

Product

Alumina Ceramics-T
Alumina Ceramics

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Alumina Ceramic Rod

Alumina Ceramic Substrates

Alumina Ceramic Disc

Alumina Ceramic Plate

Alumina Ceramic Roller

Alumina Ceramic Crucible

Alumina Ceramic Ring

Alumina Ceramic Part

Silicon Carbide Ceramics

RBSiC

SSiC

R-SiC

Aluminum Nitride Ceramics

Aluminum Nitride Substrates

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Aluminum Nitride Plate

Aluminum Nitride Disc

Aluminum Nitride Part

Boron Nitride Ceramics (BN)

Boron Nitride Tube

Boron Nitride Plate

Boron Nitride Ring

Boron Nitride Nozzle

Boron Nitride Crucible

Boron Nitride Part

Alumina Ceramic Disc

Alumina ceramic discs are flat circular plates made of high-purity alumina ceramics. They are commonly used in a variety of industrial applications where high-temperature resistance, wear resistance, and electrical insulation are required.

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Product Description

Features & Benefits

  • High temperature resistance
  • Wear resistance
  • Chemical resistance
  • Electrical insulation
  • Dimensional stability

Markets & Applications

  • Semiconductor industry
  • Medical industry
  • Mechanical industry
  • Aerospace industry
  • Energy industry

Specification

Dimension Outer dia. mm Inner dia.mm Length mm Remark
Item 
Thermocouple protection tube 7-170 1-110 10-2500 If you need others,we can customize for you.
Insulated tube Single hole 2-530 1-500 10-5200
(inner core) Double holes 1-10 0.4-2 10-2500
Four-Nine holes 1-10 0.5-2 10-2500

 

Parameters of Alumina Ceramic

Item Test Condition 78-82% Al2O3 95% Al2O3 99% Al2O3 99.5% Al2O3
Physical properties Density g/m³      >2.9 >3.6 3.89 3.96
Moisture absorption %   5-7 0 0 0
Mechanical properties ROHS Hardness     60-70 ≥85 ≥89 ≥89
Flexural strength psiX103 20℃   358 550 550
Compressive strength psiX103 20℃   2068(300) 2600(377) 2600(377)
Fracture toughness Mpa.m3/2 K(l c)   4.3 5.6 6
Thermal properties Maximum use temperature   1350 1450 1600 1650
Thermal expansion coefficient 1X10-6/℃ (25-1000℃) 6.1-6.6 7.6 7.9 8.2
Thermal shock resistance Tc very good 250 200 200
Thermal conductivity w/mok 20℃   16 30 30.4
Electrical properties Volume resistivity Ohm/cm2 100℃ >1013 >1013 >1014 >1014
Dielectric breakdown strength KV/mm   8.7(220) 8.7(220) 8.7(220) 8.7(220)
Dielectric constant (E) 1MHz25℃ 9 9 9.7 9.7
Dielectric constant (100MHz) (E) 9.5