ZERODUR® glass-ceramic from SCHOTT is an inorganic non-porous lithium aluminum silicon-oxide material made by controlled volume crystallization. It contains a crystallized phase and a rest glass phase, which creates this exceptional material's unique properties.
ZERODUR® glass block
Unlike most glass materials, ZERODUR® has an extremely low coefficient of thermal expansion (CTE) that even can become zero or slightly negative at some temperatures. The expansion is also much smaller than the one of quartz glass or fused silica.
Another unique characteristic of ZERODUR® is its high homogeneity. Even in large ZERODUR®, material blocks the fluctuations of mechanical and thermal properties are nearly not measurable. Good transparency in the range of about 400 - 2.300 nm allows verification of the inner quality of ZERODUR®. Therefore, neither bubbles nor inclusions are undetected. Our company uses differently available material-grades of ZERODUR® glass-ceramic to manufacture substrates for high-quality optics used for high-end applications in research, science, industry, space technology, and astronomy. However, for the design of length standards, large telescope mirrors, laser cavities, coating substrates, and mechanical components for fiber optics, ZERODUR® high-performance glass-ceramic is an ideal material choice.
Our company machines all kinds of optics for a broad range of applications from these fascinating glass-ceramic materials. To request a quotation for a finished part made of original ZERODUR® glass-ceramic from SCHOTT at custom dimensions, please use the button below:
Electrical resistivity (at 20 °C)
For further detailed specifications and additional data of ZERODUR® glass-ceramic, please use our information request page.
All given details and specifications are mean reference values and are not guaranteed. Also, please consider our "Notes on specifications".
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