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MgF2 Substrate

Advantage：

1.Good transmission Request A Quote

MgF2 is used as a lens, prism and window for wavelength from 110nm to 7.5μm. It is a most suitable material as window for ArF Excimer Laser, for the reason of its good transmission at 193nm. It is also effective as an optical polarizing in the ultraviolet region.

Properties:

Density（g/cm³）	3.18
Melting Point(℃)	1255
Thermal Conductivity	0.3 Wm-1K-1 at 300K
Thermal Expansion	13.7 x 10-6 /℃ parallel c-axis 8.9 x 10-6 /℃ perpendicular c-axis
Knoop Hardness	415 with 100g indenter (kg/mm2)
Specific Heat Capacity	1003 J/(kg.k)
Dielectric Constant	1.87 at 1MHz parallel c-axis 1.45 at 1MHz perpendicular c-axis
Youngs Modulus (E)	138.5 GPa
Shear Modulus (G)	54.66 GPa
Bulk Modulus (K)	101.32 GPa
Elastic Coefficient	C11=164; C12=53; C44=33.7 C13=63; C66=96
Apparent Elastic Limit	49.6 MPa (7200 psi)
Poisson Ratio	0.276

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