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SCHOTT North America
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ZERODUR® K20
The new ZERODUR® K20 glass ceramic material contains a crystal phase of over 90% Keatite, produced by thermal transformation from the semi-transparent ZERODUR® glass ceramic material.
This new material has an expansion coefficient of 2.0•10-6 K-1 between 20° - 700° C, and an even lower value of 1.5•10-6 K-1 at room temperature. The material has high temperature stability and does not change during multiple temperature cycles.
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ZERODUR® K20 glass ceramic has a near zero thermal expansion coefficient and long-term temperature stability up to 850°C. ZERODUR® K20 can be matched with low thermal expansion metal alloys such as Invar®.
Other advantages of ZERODUR® K20 glass ceramic include:
- Optical inspection of the excellent homogeneity and internal quality can be done in the semi transparent base material before transformation.
- After transformation the material has a radiance factor of more than 90% with a matt brilliant white finish.
- ZERODUR® K20 is free of pores and can be polished to very low surface roughness levels.
- Large-scale parts can be produced with dimensions of several meters.
- US patent granted, European patent pending
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ZERODUR® K20 glass ceramic is the ideal material for:
- Mechanical and optical components within high energy laser systems
- Mold material in hot forming processes (glass, plastic etc.)
- Ceramic engine components
- Calibration standards for optical and mechanical probes
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ZERODUR® K20 glass ceramic can be supplied in the following forms:
- Molds for glass slumping
- Rods
- Tubes
- Discs
- Plates
- Complex customized CNC manufactured products
- Serial production or prototype manufacturing
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ZERODUR® K20 glass ceramic has an expansion coefficient of 2.0•10-6 K-1 between 20° - 700° C and 1.5•10-6 K-1 at room temperature. It is most appropriate for applications requiring material temperature stability up to 850°C.
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Modern measurement equipment is used in the inspection of ZERODUR® K20 glass ceramic parts during all stages of fabrication to ensure 100% control of geometrical shape and internal quality.
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Contact
SCHOTT North America, Inc.
400 York Avenue Duryea, PA 18642 USA
 | 570-457-7485 |
 | 570-457-7330 |
E-mail
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