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Schott N-BAK2 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 2.86 g/cc
0.103 lb/in³
Mechanical Properties Metric English Comments
Knoop Microhardness 530
530
.1/20
Modulus of Elasticity 71.0 GPa
10300 ksi
Poissons Ratio 0.233
0.233
Shear Modulus 29.0 GPa
4210 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
9.00 µm/m-°C

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

@Temperature 68.0 - 572 °F
Specific Heat Capacity 0.690 J/g-°C
0.165 BTU/lb-°F
Thermal Conductivity 0.920 W/m-K
6.38 BTU-in/hr-ft²-°F
Transformation Temperature, Tg 554 °C
1030 °F
Optical Properties Metric English Comments
Refractive Index 1.53996

@Wavelength 587.6 nm
 1.53996

@Wavelength 587.6 nm
 n<sub>d</sub>
1.54212

@Wavelength 546.1 nm
 1.54212

@Wavelength 546.1 nm
 n<sub>e</sub>
Transmission, Visible 99.6 %

@Thickness 10.0 mm,
Wavelength 380 nm
 99.6 %

@Thickness 0.394 in,
Wavelength 380 nm
99.7 %

@Thickness 10.0 mm,
Wavelength 405 nm
 99.7 %

@Thickness 0.394 in,
Wavelength 405 nm
99.7 %

@Thickness 10.0 mm,
Wavelength 460 nm
 99.7 %

@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 75.8 %

@Thickness 10.0 mm,
Wavelength 2500 nm
 75.8 %

@Thickness 0.394 in,
Wavelength 2500 nm
99.4 %

@Thickness 10.0 mm,
Wavelength 1530 nm
 99.4 %

@Thickness 0.394 in,
Wavelength 1530 nm
UV Transmittance 4.0 %

@Thickness 10.0 mm,
Wavelength 280 nm
 4.0 %

@Thickness 0.394 in,
Wavelength 280 nm
39.8 %

@Thickness 10.0 mm,
Wavelength 300 nm
 39.8 %

@Thickness 0.394 in,
Wavelength 300 nm
96.3 %

@Thickness 10.0 mm,
Wavelength 334 nm
 96.3 %

@Thickness 0.394 in,
Wavelength 334 nm
99.6 %

@Thickness 10.0 mm,
Wavelength 370 nm
 99.6 %

@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 2
HG 2
K (10-6mm2/N) 2.6
Phosphate Resistance PR 2.3
T1013.0 (°C) 550
T107.6 (°C) 727
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