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 2.010^-6K^-1between 20° - 700° C, and an even lower value of 1.510^-6K^-1at room temperature. The material has high temperature stability and does not change during multiple temperature cycles.