Technical Ceramics


Our Haldenwanger range of tubes and rollers is available in our alumina based Sillimantin® material which is frequently chosen for kilns due to its excellent properties.

Sillimantin® 60

Most frequently used ceramic material in kiln designs.

  • Type C530 according to DIN EN 60672
  • Application temperatures up to 1400°C
  • Refractoriness up to 1300°C (subject to loading for roller applications)
  • No reactions with heating elements
  • This material can be formed using most moulding methods
  • Numerous special designs are possible as well as a wide range of standard tubes
  • This material is used successfully in laboratory and industrial kilns

Sillimantin® 60NG

A specially developed material for use in kiln manufacture having an Al2O3 content between 73 – 75%.

  • Low porosity
  • Good thermal shock resistance
  • No reactions with the heating elements
  • Working temperatures of up to 1650°C
  • Special shapes possible for bridging long distances between supports
  • Excellent chemical resistance
  • No contamination of the kiln atmosphere through evaporation
  • Suitable for kilns with a high temperature gradient
  • Ideal for use under severe conditions as the outer protective tube in temperature monitoring devices
  • Suitable for rollers for kilns

Sillimantin® KS

Most economical material for support tubes.

  • Refractoriness up to 1300°C
  • Good mechanical strength
  • Large scale production with emphasis on the most commonly used diameters permitting economical manufacture