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Schott Glass 8337B Borosilicate 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:
Borosilicate glass for sealing to Kovar metal and tungsten, highly UV-transmitting photomultiplier and UV detectors The heavy metal content for the elements lead, cadmium, mercury, and hexavalent chromium is below 100 ppmInformation provided by SCHOTT AG.
Physical Properties Metric English Comments
Density 2.22 g/cc

@Temperature 25.0 °C
0.0802 lb/in³

@Temperature 77.0 °F
Mechanical Properties Metric English Comments
Modulus of Elasticity 51.0 GPa
7400 ksi
Poissons Ratio 0.22
0.22
Shear Modulus 20.9 GPa
3030 ksi
Calculated
Thermal Properties Metric English Comments
CTE, linear 4.10 µm/m-°C

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

@Temperature 68.0 - 572 °F
ISO 7991
Thermal Conductivity 1.00 W/m-K

@Temperature 90.0 °C
6.94 BTU-in/hr-ft²-°F

@Temperature 194 °F
Transformation Temperature, Tg 440 °C
824 °F
ISO 7884-8
Softening Point 705 °C
1300 °F
Viscosity 10<sup>7.6</sup> dPa s; ISO 7884-3
Working Point 1085 °C
1985 °F
Viscosity 10<sup>4</sup> dPa s; ISO 7884-2
Annealing Point 465 °C
869 °F
Viscosity 10<sup>13</sup> dPa s; ISO 7884-4
Optical Properties Metric English Comments
Refractive Index 1.476

@Wavelength 587.6 nm
1.476

@Wavelength 587.6 nm
Electrical Properties Metric English Comments
Volume Resistivity 3.20e+7 ohm-cm

@Temperature 350 °C
3.20e+7 ohm-cm

@Temperature 662 °F
1.60e+9 ohm-cm

@Temperature 250 °C
1.60e+9 ohm-cm

@Temperature 482 °F
Dielectric Constant 4.7

@Frequency 1.00e+6 Hz,
Temperature 25.0 °C
4.7

@Frequency 1.00e+6 Hz,
Temperature 77.0 °F
Dielectric Loss Index 0.0022

@Frequency 1.00e+6 Hz,
Temperature 25.0 °C
0.0022

@Frequency 1.00e+6 Hz,
Temperature 77.0 °F
Chemical Properties Metric English Comments
Acid Class, SR 4
4
DIN 12116
Alkali Class, AR 3
3
ISO 695
Descriptive Properties Value Comments
Hydrolytic Resistance Class HGB 3
ISO 719
Stress-optical Coefficient K (10-6mm2N-1) 4.1
DIN 52314
tk100(°C) 315
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