Density (g/cm3)

5.33

Coefficient of Thermal Expansion CTE (10-6/°C)

6.1

Index of Refraction nd

4.002 @ 11µm

Knoop Hardness (kg/mm2)

780.00

Poisson's Ratio

0.28

Young's Modulus (GPa)

102.7

Dimensional Tolerance (mm)

+0.0/-0.1

Thickness Tolerance (mm)

±0.1

Surface Quality

60-40

Parallelism (arcmin)

<1

Clear Aperture (%)

>90%