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Schott N-LASF31a 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 5.51 g/cc
0.199 lb/in³
Mechanical Properties Metric English Comments
Knoop Microhardness 650
650
.1/20
Modulus of Elasticity 126 GPa
18300 ksi
Poissons Ratio 0.301
0.301
Shear Modulus 48.0 GPa
6960 ksi
calculated
Thermal Properties Metric English Comments
CTE, linear 6.70 µm/m-°C

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

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

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

@Temperature 68.0 - 572 °F
Specific Heat Capacity 0.440 J/g-°C
0.105 BTU/lb-°F
Thermal Conductivity 0.790 W/m-K
5.48 BTU-in/hr-ft²-°F
Transformation Temperature, Tg 719 °C
1330 °F
Optical Properties Metric English Comments
Refractive Index 1.883

@Wavelength 587.6 nm
 1.883

@Wavelength 587.6 nm
 n<sub>d</sub>
1.88815

@Wavelength 546.1 nm
 1.88815

@Wavelength 546.1 nm
 n<sub>e</sub>
Transmission, Visible 84.2 %

@Thickness 10.0 mm,
Wavelength 380 nm
 84.2 %

@Thickness 0.394 in,
Wavelength 380 nm
93.3 %

@Thickness 10.0 mm,
Wavelength 405 nm
 93.3 %

@Thickness 0.394 in,
Wavelength 405 nm
97.4 %

@Thickness 10.0 mm,
Wavelength 460 nm
 97.4 %

@Thickness 0.394 in,
Wavelength 460 nm
99.5 %

@Thickness 10.0 mm,
Wavelength 580 nm
 99.5 %

@Thickness 0.394 in,
Wavelength 580 nm
99.6 %

@Thickness 10.0 mm,
Wavelength 700 nm
 99.6 %

@Thickness 0.394 in,
Wavelength 700 nm
IR Transmittance 63.4 %

@Thickness 10.0 mm,
Wavelength 2500 nm
 63.4 %

@Thickness 0.394 in,
Wavelength 2500 nm
99.2 %

@Thickness 10.0 mm,
Wavelength 1530 nm
 99.2 %

@Thickness 0.394 in,
Wavelength 1530 nm
UV Transmittance 0.10 %

@Thickness 10.0 mm,
Wavelength 320 nm
 0.10 %

@Thickness 0.394 in,
Wavelength 320 nm
12.3 %

@Thickness 10.0 mm,
Wavelength 334 nm
 12.3 %

@Thickness 0.394 in,
Wavelength 334 nm
46.8 %

@Thickness 10.0 mm,
Wavelength 350 nm
 46.8 %

@Thickness 0.394 in,
Wavelength 350 nm
76.4 %

@Thickness 10.0 mm,
Wavelength 370 nm
 76.4 %

@Thickness 0.394 in,
Wavelength 370 nm
Chemical Properties Metric English Comments
Acid Class, SR 2.3
2.3
Alkali Class, AR 1.0
1.0
Stain Resistance Class, FR 0.00
0.00
Descriptive Properties Value Comments
B 1
Climatic Resistance Test CR 1
HG 2
K (10-6mm2/N) 1.18
Phosphate Resistance PR 1
T1013.0 (°C) 720
T107.6 (°C) 830
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