LAS Glass-Ceramics

Lithium Oxide (Li2O 3-6%)

Aluminum Oxide (Al2O3 18-25%)

Silica (SiO2 58-75%)

Glass ceramics are produced through controlled crystallization. Typically, a glass material is formed through a typical manufacturing process, and then the material is cooled and then reheated to force crystallization. During this process, nucleating additive agents are often added to the composition to improve control during the crystallization process. Due to this unique manufacturing process, glass ceramics offer outstanding properties that have made them especially useful materials for glass-to-metal sealing. Glass ceramics have the unique ability to exhibit key properties of both glasses and ceramics, offering several advantages for manufacturers.

Glass-ceramics are found in a wide range of applications, including cooktops, nosecones of high-performance aircrafts and missiles, honeycomb mounts for satellite mirrors, precision optics, X-ray telescopes, ring laser gyroscopes, fireplaces, vacuum environment feed-troughs, medical equipment, and construction materials that emulate natural stone.

Glass ceramics are manufactured in a variety of systems. Elan Technology utilizes the lithium-alumina-silicon (LAS) system to produce its glass ceramics. LAS glass ceramics offer several advantageous thermomechanical properties, including an adjustable coefficient of thermal expansion, high temperature resistance, improved chemical durability, and zero or very low open porosity. Discover the many advantages that glass ceramics can offer your manufacturing needs by contacting our engineers with your specific requirements.

Our Ceramic-Glass Materials

Elan 46

Density: 2.27

Coefficient of Expansion: 110-220

Dielectric Constant: 6.0

Sealable glass-ceramic composite material

Common Uses:
Matched hermetic seals, with SAE 1010 Cold Rolled Steel or Stainless Steel Grade 430


Glass-Ceramics Properties

  • Mechanically strong material, sustaining repeated and quickly changing temperatures
  • Adjustable coefficient of thermal expansion
  • Produces high strength seals that can withstand temperatures up to 700°C
  • High temperature properties
  • Improved chemical durability
  • Much higher strength and toughness than glass materials
  • Eliminates manufacturing steps
  • Reduces sealing time
  • Can match a wide range of materials for sealing applications

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Elan Technology offers a variety of glass materials to service your manufacturing needs. Contact us to request a quote.

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The data above is to be used as a reference only. Please contact us for full details and product inquiries.