ZERODUR®
Extremely Low Thermal Expansion Glass-Ceramic
ZERODUR® glass-ceramic has an extremely low coefficient of thermal expansion over a wide temperature range. It is ideal in applications where geometrical shape and distance changes must be kept low under temperature variations.
Extremely low coefficient of thermal expansion across a wide temperature range
Excellent CTE homogeneity throughout the total
volume
Wide size range of precise geometrical shapes available
Extremely smooth surface with residual roughness below 1nm
Excellent chemical stability and resistance to harsh atmospheric conditions
© SCHOTT
By default, the mean coefficient of thermal expansion (CTE) of ZERODUR® is measured within the temperature range of 0°C to 50°C
Forms of Supply
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Cut discs
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Rectangular blocks
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Prisms
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Rods
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Complex cut piece geometry
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Light-weighting optional
Common Applications
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Mirror substrate in large earthbound or orbital telescopes (GTC, Keck I, Keck II, Hubble, Chandra, SOFIA, VLT, ELT)
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IC and LCD lithography
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High precision metrology
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Ring laser gyroscopes
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Optical flats
Maximum operating temperature 600°C
SKAN hold a variety of ZERODUR® stock. Please get in touch to discuss your requirement.
ZERODUR® K20
ZERODUR® K20 is optimised to withstand higher operating temperatures up to 850°C, available as small, high precision components.
© SCHOTT