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Schott N-LAK9 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 3.51 g/cc
0.127 lb/in³
Mechanical Properties Metric English Comments
Knoop Microhardness 700
700
.1/20
Modulus of Elasticity 110 GPa
16000 ksi
Poissons Ratio 0.285
0.285
Shear Modulus 43.0 GPa
6240 ksi
calculated
Thermal Properties Metric English Comments
CTE, linear 6.30 µm/m-°C

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

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

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

@Temperature 68.0 - 572 °F
Specific Heat Capacity 0.649 J/g-°C
0.155 BTU/lb-°F
Thermal Conductivity 0.908 W/m-K
6.30 BTU-in/hr-ft²-°F
Transformation Temperature, Tg 656 °C
1210 °F
Optical Properties Metric English Comments
Refractive Index 1.691

@Wavelength 587.6 nm
 1.691

@Wavelength 587.6 nm
 n<sub>d</sub>
1.69401

@Wavelength 546.1 nm
 1.69401

@Wavelength 546.1 nm
 n<sub>e</sub>
Transmission, Visible 95.4 %

@Thickness 10.0 mm,
Wavelength 380 nm
 95.4 %

@Thickness 0.394 in,
Wavelength 380 nm
98.3 %

@Thickness 10.0 mm,
Wavelength 405 nm
 98.3 %

@Thickness 0.394 in,
Wavelength 405 nm
99.4 %

@Thickness 10.0 mm,
Wavelength 460 nm
 99.4 %

@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 49.2 %

@Thickness 10.0 mm,
Wavelength 2500 nm
 49.2 %

@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 0.44 %

@Thickness 10.0 mm,
Wavelength 300 nm
 0.44 %

@Thickness 0.394 in,
Wavelength 300 nm
55.6 %

@Thickness 10.0 mm,
Wavelength 334 nm
 55.6 %

@Thickness 0.394 in,
Wavelength 334 nm
92.8 %

@Thickness 10.0 mm,
Wavelength 370 nm
 92.8 %

@Thickness 0.394 in,
Wavelength 370 nm
Chemical Properties Metric English Comments
Acid Class, SR 52
52
Alkali Class, AR 1.2
1.2
Stain Resistance Class, FR 3.0
3.0
Descriptive Properties Value Comments
B 0
Climatic Resistance Test CR 3
HG 3
K (10-6mm2/N) 1.83
Phosphate Resistance PR 4.3
T1013.0 (°C) 645
T107.6 (°C) 722
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