Although it has advantages for applications requiring a coefficient of thermal expansion less than that of borosilicate glass, it remains very expensive as compared to borosilicate. The tight tolerance on CTE, ±0.007 K−1, allows for its use in high-precision applications.
In certain applications requiring a lower coefficient of thermal expansion than that of borosilicate glass, this material has an advantage despite being more costly. Its precise temperature coefficient of expansion tolerance, ±0.007 K−1, makes it suitable for high-precision applications.