Mateck Quartz Crystalline (SiO 2 )

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Mateck Quartz Crystalline (SiO₂)
Categories:	Ceramic; Oxide; Silicon Oxide
Material Notes:	Optical crystals
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Physical Properties	Original Value	Comments

Density	2.649 g/cc @Temperature 20.0 °C
Solubility	0.00 ppm
a Lattice Constant	4.9138 Å
c Lattice Constant	5.4052 Å
Molecular Weight	60.06 g/mol

Mechanical Properties	Original Value	Comments
Vickers Microhardness	9810	MPa
Hardness, Mohs	7.0
Modulus of Elasticity	87.0 GPa	no
	105 GPa	ne

Thermal Properties	Original Value	Comments
CTE, linear	13.24 µm/m-°C @Temperature 0.000 - 20.0 °C
Specific Heat Capacity	0.741 J/g-°C
Thermal Conductivity	6.82 W/m-K @Temperature 25.0 °C
	11.43 W/m-K @Temperature 25.0 °C
Melting Point	1470 °C

Optical Properties	Original Value	Comments
Refractive Index	1.4996 @Wavelength 3000 nm
	1.507 @Wavelength 3000 nm
	1.535 @Wavelength 1000 nm
	1.5438 @Wavelength 1000 nm
	1.5538 @Wavelength 436 nm
	1.5632 @Wavelength 436 nm
	1.6493 @Wavelength 200.1 nm
	1.6623 @Wavelength 200.1 nm
IR Transmittance	10 % @Wavelength 4100 nm	Internal Transmittance
	80 % @Wavelength 3900 nm	Internal Transmittance
	98 % @Wavelength 3000 nm	Internal Transmittance
UV Transmittance	98 % @Wavelength 200 nm	Internal Transmittance

Descriptive Properties
Symmetry	hexagonal
Symmetry Class	P321
Thermal Coefficient of Refractive Index	-3.93E-06	ne at 340 nm for 20/100°C
	-5.01E-06	no at 340 nm for 20/100°C
Transmission Range (microns)	0.15 - 3.3

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CMAT054 / 87738

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