Mateck Fused Silica IR Grade (SiO 2 )

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Mateck Fused Silica IR Grade (SiO₂)
Categories:	Ceramic; Oxide; Silicon Oxide
Material Notes:	Optical crystals
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Physical Properties	Original Value	Comments

Density	2.21 g/cc @Temperature 20.0 °C
Solubility	0.00 ppm

Mechanical Properties	Original Value	Comments
Modulus of Elasticity	73.6 GPa
Poissons Ratio	0.17
Shear Modulus	31.4 GPa

Thermal Properties	Original Value	Comments
CTE, linear	4.00 µm/m-°C @Temperature -50.0 - 50.0 °C
Specific Heat Capacity	0.728 J/g-°C
Thermal Conductivity	1.35 W/m-K
Melting Point	1900 °C

Optical Properties	Original Value	Comments
Refractive Index	1.4131 @Wavelength 3243.9 nm
	1.4494 @Wavelength 1083 nm
	1.4584 @Wavelength 587.6 nm	nd
	1.4601 @Wavelength 546.1 nm	at ne
	1.4696 @Wavelength 404.6 nm
	1.615 @Wavelength 170 nm
IR Transmittance	87 % @Wavelength 3000 nm	Internal Transmittance
	95.5 % @Wavelength 2800 nm	Internal Transmittance
UV Transmittance	22 % @Wavelength 220 nm	Internal Transmittance
	52.5 % @Wavelength 240 nm	Internal Transmittance
	99.9 % @Wavelength 280 nm	Internal Transmittance

Descriptive Properties
Thermal Coefficient of Refractive Index	1E-05	at nc microns for +20 °C
Transmission Range (microns)	0.18 - 3.5

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CMAT046 / 87730

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