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Schott N-KF9 Glass

Category Ceramic , Glass
Manufacturer Schott North America
Trade Name
Port Ningbo 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 2.50 g/cc
0.0903 lb/in³
Mechanical Properties Metric English Comments
Knoop Microhardness 480
480
.1/20
Modulus of Elasticity 66.0 GPa
9570 ksi
Poissons Ratio 0.225
0.225
Shear Modulus 27.0 GPa
3920 ksi
calculated
Thermal Properties Metric English Comments
CTE, linear 9.60 µm/m-°C

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

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

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

@Temperature 68.0 - 572 °F
Specific Heat Capacity 0.860 J/g-°C
0.206 BTU/lb-°F
Thermal Conductivity 1.04 W/m-K
7.22 BTU-in/hr-ft²-°F
Transformation Temperature, Tg 476 °C
889 °F
Optical Properties Metric English Comments
Refractive Index 1.52346

@Wavelength 587.6 nm
 1.52346

@Wavelength 587.6 nm
 n<sub>d</sub>
1.52588

@Wavelength 546.1 nm
 1.52588

@Wavelength 546.1 nm
 n<sub>e</sub>
Transmission, Visible 95 %

@Thickness 10.0 mm,
Wavelength 380 nm
 95 %

@Thickness 0.394 in,
Wavelength 380 nm
99 %

@Thickness 10.0 mm,
Wavelength 405 nm
 99 %

@Thickness 0.394 in,
Wavelength 405 nm
99.6 %

@Thickness 10.0 mm,
Wavelength 460 nm
 99.6 %

@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
99.9 %

@Thickness 10.0 mm,
Wavelength 700 nm
 99.9 %

@Thickness 0.394 in,
Wavelength 700 nm
IR Transmittance 61.8 %

@Thickness 10.0 mm,
Wavelength 2500 nm
 61.8 %

@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 2.6 %

@Thickness 10.0 mm,
Wavelength 334 nm
 2.6 %

@Thickness 0.394 in,
Wavelength 334 nm
53.6 %

@Thickness 10.0 mm,
Wavelength 350 nm
 53.6 %

@Thickness 0.394 in,
Wavelength 350 nm
85.7 %

@Thickness 10.0 mm,
Wavelength 365 nm
 85.7 %

@Thickness 0.394 in,
Wavelength 365 nm
90.1 %

@Thickness 10.0 mm,
Wavelength 370 nm
 90.1 %

@Thickness 0.394 in,
Wavelength 370 nm
Chemical Properties Metric English Comments
Acid Class, SR 1.0
1.0
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 1
K (10-6mm2/N) 2.74
Phosphate Resistance PR 1
T1013.0 (°C) 476
T107.6 (°C) 640
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