Advanced Finishing Services

  • Precision grinding and lapping
  • Engineering design and support
  • Metallizing
  • Specialized coatings
  • Threaded components

Manufacturing Options

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

Material Properties Steatite

Density gm/cc 2.78
Crystal Size (Average) Microns
Water absorption (open porosity) % 0
Gas permeability % 0
Color ¯ Beige
Flexural Strength (MOR) 20°C MPa (psi x 103) 140
Elastic Modulus 20°C GPa (psi x 106)  110
Poisson’s Ratio 20°C ¯  –
Compressive Strength 20°C MPa (psi x 103)  –
Hardness GPa (kg/mm2)  –
R45N  57
Tensile Strength 25°C MPa (psi x 103)  –
Fracture Toughness K(I c) mpa m1/2  –
Thermal Conductivity 20°C W/m K 2.5
Coefficient of Thermal Expansion 25-1000°C X 10-6/°C 9
Specific Heat 100°C 880 J/kg*K
Thermal Shock Resistance   ΔTc  °C 100
 Maximum Use Temperature   °C  1200
Dielectric Strength 6.35mm ac-kV/mm (ac V/mil)
Dielectric Constant 1 MHz 25°C
Dielectric Loss (tan delta) 1 MHz 25°C
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.