Glass-ceramics have a characteristic manufacturing process and a unique set of properties. Combining the best aspects of glass and ceramic, they represent a new class of materials. The coefficient of thermal expansion (CTE) of lithium-aluminum-silicate (LAS) glass-ceramics can be tailored to nearly zero.
Factory workers pouring molten glass into a mold

Precise properties carefully controlled

Glass-ceramics are processed in two production steps: glass melting, including hot forming, and ceramization. The resulting material offers unique properties, such as near-zero expansion over a wide temperature range. The manufacturing process requires precise temperature management for outstanding homogeneity and tight control of the exact specifications.

Glass-ceramic component in the shape of a hexagon

A unique success story for more than 50 years

SCHOTT has been manufacturing and developing glass-ceramics for over 50 years. In that time, the material has opened up new possibilities for engineers and designers all over the world – and in space – by providing materials with unique sets of properties. Their applications range from home appliances, machinery and plant manufacturing, architecture, lithography and metrology to astronomy.

Illustration of a solid oxide fuel cell

Use of glass-ceramics as a sealing material

The wide variety of glass-ceramics is evidence of the material’s remarkable range of properties and, like glass, their composition is highly variable. Glass-ceramics are used as sealing material in components that need to withstand harsh environments and high operating temperatures, such as solid oxide fuel cells and electrolyzer cells.

Female eye looking at the organge surface of the sun
News & Innovation stories

Developed for extreme conditions

SCHOTT NEXTREMA® is a highly versatile glass-ceramic material platform that allows product designers, engineers and other developers to obtain exactly the right material to meet their project’s individual demands.

Read More
High precision sensor on ZERODUR® glass-ceramic

Accurate to a millionth of a millimeter

How the low thermal expansion of ZERODUR® is enabling new ideas and innovation.

Read More
Glass powder melting in a laboratory oven furnace

Excited about efficiently generated energy

Extremely heat-resistant glass and glass-ceramic powders are key for the long-term performance of Solid Oxide Fuel Cells (SOFC).

Read More

Want to know more? Let’s talk

Whether you need more information, samples, a quote, or advice for a project, we would be delighted to talk to you.

Get in touch
GettyImages-1132121143, Businessman working in a new office, 1132121143