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Schott N-LAK7 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 3.84 g/cc
0.139 lb/in³
Mechanical Properties Metric English Comments
Knoop Microhardness 600
600
.1/20
Modulus of Elasticity 90.0 GPa
13100 ksi
Poissons Ratio 0.277
0.277
Shear Modulus 35.0 GPa
5080 ksi
calculated
Thermal Properties Metric English Comments
CTE, linear 7.10 µm/m-°C

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

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

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

@Temperature 68.0 - 572 °F
Transformation Temperature, Tg 618 °C
1140 °F
Optical Properties Metric English Comments
Refractive Index 1.6516

@Wavelength 587.6 nm
 1.6516

@Wavelength 587.6 nm
 n<sub>d</sub>
1.65425

@Wavelength 546.1 nm
 1.65425

@Wavelength 546.1 nm
 n<sub>e</sub>
Transmission, Visible 94.6 %

@Thickness 10.0 mm,
Wavelength 380 nm
 94.6 %

@Thickness 0.394 in,
Wavelength 380 nm
98.1 %

@Thickness 10.0 mm,
Wavelength 405 nm
 98.1 %

@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 54.6 %

@Thickness 10.0 mm,
Wavelength 2500 nm
 54.6 %

@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 4.4 %

@Thickness 10.0 mm,
Wavelength 300 nm
 4.4 %

@Thickness 0.394 in,
Wavelength 300 nm
50.9 %

@Thickness 10.0 mm,
Wavelength 334 nm
 50.9 %

@Thickness 0.394 in,
Wavelength 334 nm
91 %

@Thickness 10.0 mm,
Wavelength 370 nm
 91 %

@Thickness 0.394 in,
Wavelength 370 nm
Chemical Properties Metric English Comments
Acid Class, SR 53.3
53.3
Alkali Class, AR 3.3
3.3
Stain Resistance Class, FR 2.0
2.0
Descriptive Properties Value Comments
B 0
Climatic Resistance Test CR 3
HG 5
K (10-6mm2/N) 1.65
Phosphate Resistance PR 4.3
T1013.0 (°C) 626
T107.6 (°C) 716
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