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Material
Production
Characteristics
Applications
Inquiries

Steatite
 

Steatite is an inorganic material made from natural raw materials containing predominantly magnesium silicate.

It is well known for its high temperature resistance, creep resistance and dielectric strength, and is therefore a suitable insulating mateial for electrical engineering.

Steatite has a good mechnical strength and by using special production methods it can be formed into accurate shapes.
Material
 

Steatite is a 75-90% silicate material based on soapstone with additions of clays and flux (3 MgO - 4 SiO2 - H2O).

Typical steatite materials have the following analysis: 58 - 65% SiO2, 26-32% MgO, 3-6% Al2O3, 1.3% Na2O (C220) of 7% BaO (C221).

It's structure is crystallne protoensteatite (MgO-SiO2) with a glassy portion of 25-45%.Die Glasphase hat einen Anteil von 25-45%.

The mechanical strenght can be increased by the addition of zirconium oxide.

Production
  Typical production processes are dry pressing, extrusion, casting and semi wet pressing.

The material is fired at around 1400°C and steatite is formed by crystallyzation, fusion and dissolving during the vitrification.

To obtain a contamination free surface steatite can also be glazed.

Technical values are acc. to IEC 672 respectively DIN VDE 0335.
Characteristics

For details regarding the different materials please look on the pdf-files.
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Spread-sheet Steatite
Applications
 

Steatite is an excellent material for electrical engineering with a high dielectric and mechanical strength that can be formed into accurate shapes.

Steatite is stable up to 1000°C, inert and non flammable. 

Steatite has been proven in innumerable electro-technical applications such as halogen bulb holders, NH-fuses, element formers and casings for thermostats.
Inquiries

To enable us to forward quotations, please send us a drawing of the part your require indicating the critical areas, tolerances and quantities.

If exacting tolerances are required, the parts may have to be machined.