Steatite MgO·SiO₂

Steatite is a ceramic material based on natural raw materials. It consists of soapstone (Mg(Si4O10)(OH)2), which is also the main component, a natural Magnesium silicate with additions of clay and feldspar or Barium carbonate.

Steatite ceramic is suitable for metal/ceramic component solutions and even for applications that require reduced permittivity. High-strength, vacuum-sealed metal-ceramic solder joints between fusible alloys and Steatite ceramics can be produced. This results in higher thermal shock resistance at high pressure but also increased transparency to microwave frequencies.

Steatite material exhibits low contraction during firing. This allows production of components to precise tolerances. Both small and highly detailed shapes can be achieved using cost efficient production methods, making steatite suitable for volume manufacture of insulating components.

Steatite impresses with its very good dielectric strength, ageing resistance, UV radiation resistance, high mechanical strength, a temperature resistance and dimensional stability up to 1000°C. In addition, there is the tracking resistance and it is non-flammable.

Typical applications for Steatite ceramics include, but not limited to; bushings, electric heating elements, igniters, lamp bases/sockets, resistors, stand offs, band heaters, knife sharpeners, thermocouple cores, thermostat pins, load banks, ovens, furnaces, connectors, spacers, electrostatic air cleaners, relays, switches, fuses, substrates, sensors and stiffening rods.

Anderman’s offerings include both a glazed and non-glazed Steatite. Glazing Steatite provides improved electrical resistance, whilst providing an impervious protective surface.