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Schott SF4 Glass

Category Ceramic , Glass
Manufacturer Schott North America
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:
Information Provided by SCHOTT North America, Inc.
Physical Properties Metric English Comments
Density 4.79 g/cc
0.173 lb/in³
Mechanical Properties Metric English Comments
Knoop Microhardness 390
390
.1/20
Modulus of Elasticity 56.0 GPa
8120 ksi
Poissons Ratio 0.241
0.241
Shear Modulus 23.0 GPa
3340 ksi
calculated
Thermal Properties Metric English Comments
CTE, linear 8.00 µm/m-°C

@Temperature -30.0 - 70.0 °C
 4.44 µin/in-°F

@Temperature -22.0 - 158 °F
8.90 µm/m-°C

@Temperature 20.0 - 300 °C
 4.94 µin/in-°F

@Temperature 68.0 - 572 °F
Specific Heat Capacity 0.410 J/g-°C
0.0980 BTU/lb-°F
Thermal Conductivity 0.650 W/m-K
4.51 BTU-in/hr-ft²-°F
Transformation Temperature, Tg 420 °C
788 °F
Optical Properties Metric English Comments
Refractive Index 1.7552

@Wavelength 587.6 nm
 1.7552

@Wavelength 587.6 nm
 n<sub>d</sub>
1.76167

@Wavelength 546.1 nm
 1.76167

@Wavelength 546.1 nm
 n<sub>e</sub>
Transmission, Visible 86.2 %

@Thickness 10.0 mm,
Wavelength 380 nm
 86.2 %

@Thickness 0.394 in,
Wavelength 380 nm
96.3 %

@Thickness 10.0 mm,
Wavelength 405 nm
 96.3 %

@Thickness 0.394 in,
Wavelength 405 nm
99.2 %

@Thickness 10.0 mm,
Wavelength 460 nm
 99.2 %

@Thickness 0.394 in,
Wavelength 460 nm
99.8 %

@Thickness 10.0 mm,
Wavelength 580 nm
 99.8 %

@Thickness 0.394 in,
Wavelength 580 nm
99.8 %

@Thickness 10.0 mm,
Wavelength 700 nm
 99.8 %

@Thickness 0.394 in,
Wavelength 700 nm
IR Transmittance 84.7 %

@Thickness 10.0 mm,
Wavelength 2500 nm
 84.7 %

@Thickness 0.394 in,
Wavelength 2500 nm
99.6 %

@Thickness 10.0 mm,
Wavelength 1530 nm
 99.6 %

@Thickness 0.394 in,
Wavelength 1530 nm
UV Transmittance 9.0 %

@Thickness 10.0 mm,
Wavelength 350 nm
 9.0 %

@Thickness 0.394 in,
Wavelength 350 nm
60.1 %

@Thickness 10.0 mm,
Wavelength 365 nm
 60.1 %

@Thickness 0.394 in,
Wavelength 365 nm
72.7 %

@Thickness 10.0 mm,
Wavelength 370 nm
 72.7 %

@Thickness 0.394 in,
Wavelength 370 nm
Chemical Properties Metric English Comments
Acid Class, SR 4.3
4.3
Alkali Class, AR 2.3
2.3
Stain Resistance Class, FR 2.0
2.0
Descriptive Properties Value Comments
B 1
Climatic Resistance Test CR 1
HG 1
K (10-6mm2/N) 1.36
Phosphate Resistance PR 3.3
T1013.0 (°C) 415
T107.6 (°C) 552
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