Project Description

Sample Products

  • Ceramic Insulators

Ceramic Insulators

  • our ceramic plungers are fabricated from Alumina Oxide, Zirconia Oxide, Silicon Nitride and Silicon

Ceramic Plungers

Advanced Finishing Services

  • Precision grinding and lapping
  • Laser machining
  • Engineering design and support
  • Metallizing
  • Alumina Ceramics-to-metal brazing
  • Specialized coatings
  • Threaded components
  • Precision motion components
  • Complex cleanroom assemblies

Manufacturing Options

  • Injection molding
  • Roll compacting
  • Co-firing
  • Isostatic pressing
  • Dry pressing
  • Hot pressing
  • Tape casting
  • Slip casting

Material Properties (Alumina 99.8%)

Density gm/cc 3.92
Crystal Size (Average) Microns 6
Water absorption (open porosity) % 0
Gas permeability % 0
Color ¯ Ivory

Flexural Strength (MOR) 20°C MPa (psi x 103) 375 (54)
Elastic Modulus 20°C GPa (psi x 106)  370 (54)
Poisson’s Ratio 20°C ¯  0.22
Compressive Strength 20°C MPa (psi x 103)  2500 (363)
Hardness GPa (kg/mm2)  14.1  (1440)
R45N  83
Tensile Strength 25°C MPa (psi x 103)  248 (36)
Fracture Toughness K(I c) mpa m1/2  4-5

Thermal Conductivity 20°C W/m K 30.0
Coefficient of Thermal Expansion 25-1000°C X 10-6/°C 8.2
Specific Heat 100°C 880 J/kg*K 880
Thermal Shock Resistance   ΔTc  °C 200
 Maximum Use Temperature   °C  1750

Dielectric Strength 6.35mm ac-kV/mm (ac V/mil) 8.7 (220)
Dielectric Constant 1 MHz 25°C  9.8
Dielectric Loss (tan delta) 1 MHz 25°C  <0.0001
Volume Resistivity 25°C ohm-cm  >10
                            500°C ohm-cm
                            1000°C ohm-cm

*The chart is intended to illustrate typical properties. Property values vary with method of manufacture, size, and shape of part. Data contained herein is not to be construed as absolute and does not constitute a representation or warranty for which Ortech, Inc. assumes legal responsibility.

Material Properties (Alumina 99.5%)

Density gm/cc 3.90
Crystal Size (Average) Microns 6
Water absorption (open porosity) % 0
Gas permeability % 0
Color ¯ Ivory

Flexural Strength (MOR) 20°C MPa (psi x 103) 379 (55)
Elastic Modulus 20°C GPa (psi x 106)  370 (54)
Poisson’s Ratio 20°C ¯  0.22
Compressive Strength 20°C MPa (psi x 103)  2600 (377)
Hardness GPa (kg/mm2)  14.1 (1440)
R45N  83
Tensile Strength 25°C MPa (psi x 103)  262 (38)
Fracture Toughness K(I c) mpa m1/2  4-5

Thermal Conductivity 20°C W/m K 30.0
Coefficient of Thermal Expansion 25-1000°C X 10-6/°C 8.2
Specific Heat 100°C 880 J/kg*K 880
Thermal Shock Resistance   ΔTc  °C 200
 Maximum Use Temperature   °C  1750

Dielectric Strength 6.35mm ac-kV/mm (ac V/mil) 8.7 (220)
Dielectric Constant 1 MHz 25°C  9.7
Dielectric Loss (tan delta) 1 MHz 25°C  0.0001
Volume Resistivity 25°C ohm-cm
                            500°C ohm-cm
                            1000°C ohm-cm

*The chart is intended to illustrate typical properties. Property values vary with method of manufacture, size, and shape of part. Data contained herein is not to be construed as absolute and does not constitute a representation or warranty for which Ortech, Inc. assumes legal responsibility.

Material Properties (Alumina 96%)

Density gm/cc 3.72
Crystal Size (Average) Microns 6
Water absorption (open porosity) % 0
Gas permeability % 0
Color ¯ White

Flexural Strength (MOR) 20°C MPa (psi x 103) 358 (52)
Elastic Modulus 20°C GPa (psi x 106)  303 (44)
Poisson’s Ratio 20°C ¯  0.21
Compressive Strength 20°C MPa (psi x 103)  2068 (300)
Hardness GPa (kg/mm2)  11.5 (1175)
R45N  78
Tensile Strength 25°C MPa (psi x 103)  221 (32)
Fracture Toughness K(I c) mpa m1/2  4-5

Thermal Conductivity 20°C W/m K 24.7
Coefficient of Thermal Expansion 25-1000°C X 10-6/°C 8.2
Specific Heat 100°C 880 J/kg*K 880
Thermal Shock Resistance   ΔTc  °C 250
 Maximum Use Temperature   °C  1700

Dielectric Strength 6.35mm ac-kV/mm (ac V/mil)  8.3 (210)
Dielectric Constant 1 MHz 25°C  9
Dielectric Loss (tan delta) 1 MHz 25°C  0.0002
Volume Resistivity 25°C ohm-cm
                            500°C ohm-cm
                            1000°C ohm-cm

*The chart is intended to illustrate typical properties. Property values vary with method of manufacture, size, and shape of part. Data contained herein is not to be construed as absolute and does not constitute a representation or warranty for which Ortech, Inc. assumes legal responsibility.
  • Silicon Carbide

Silicon Carbide Ceramics Manufacturing

4:22 pm|0 Comments

Silicon carbide ceramics maintains its high mechanical strength in temperatures as high as 1,400C It has higher chemical corrosion resistance than other ceramics Ortech offers a complete family of fully dense silicon carbide ceramics materials. 

Manufacture of Technical Ceramics

4:16 pm|0 Comments

Ortech, is world leader in the manufacture of technical ceramics We has established a Precision Ceramic.  Machining Manufacturer Center for forming both unfired (“green”) and fired ceramics.  Ortech Precision Machining Manufacturer is designed to provide

  • ceramic bearings vs steel bearings

ceramic bearings vs steel bearings

9:14 pm|0 Comments

Ceramic bearings vs steel bearings enough has written about this subject so here is gust the fact first the concept behind a bearing is very simple: Things roll better than they slide. Bearings

  • Aluminium oxide Al2O3

Custom manufacturing and uses for Aluminum Oxide

12:38 pm|0 Comments

Alumina – Aluminum Oxide (Al2O3) The Most Well-known Oxide Ceramic Material Here at Ortech Advance Ceramics we have been manufacturing Aluminium oxide Al2O3 for over 20 years. Every single month we make 100's