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Mateck Silicon (Si)

Category Pure Element
Manufacturer Mateck GmbH
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
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Material Notes:
Optical crystals
Physical Properties Metric English Comments
Density 2.329 g/cc
0.08414 lb/in³
Solubility 0.00 ppm
0.00 ppm
a Lattice Constant 5.43089 Ã…
5.43089 Ã…
Molecular Weight 28.09 g/mol
28.09 g/mol
Mechanical Properties Metric English Comments
Hardness, Mohs 7.0
7.0
Modulus of Elasticity 18.9 GPa
2740 ksi
Poissons Ratio 0.266
0.266
Shear Modulus 79.9 GPa
11600 ksi
Thermal Properties Metric English Comments
CTE, linear 2.55 µm/m-°C

@Temperature 25.0 °C
 1.42 µin/in-°F

@Temperature 77.0 °F
Specific Heat Capacity 0.712 J/g-°C
0.170 BTU/lb-°F
Thermal Conductivity 159 W/m-K
1100 BTU-in/hr-ft²-°F
Melting Point 1412 °C
2574 °F
Optical Properties Metric English Comments
Refractive Index 3.426
3.426
at n5.0
3.436
3.436
at n3.0
3.422

@Wavelength 9000 nm
 3.422

@Wavelength 9000 nm
3.426

@Wavelength 5000 nm
 3.426

@Wavelength 5000 nm
3.484

@Wavelength 1500 nm
 3.484

@Wavelength 1500 nm
Descriptive Properties Value Comments
Symmetry Class m3m Fd3m
Syngony cubic
Thermal Coefficient of Refractive Index 0.00015
Transmission Range (microns) 1.2 - 10
50 - 100
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