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Schott Glass 8448 Intermediate Sealing 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:
Intermediate sealing glass Sealing to the glasses 8330, 8449, 8486, 8487, and tungstenInformation provided by SCHOTT AG.
Physical Properties Metric English Comments
Density 2.25 g/cc

@Temperature 25.0 °C
 0.0813 lb/in³

@Temperature 77.0 °F
Thermal Properties Metric English Comments
CTE, linear 3.80 µm/m-°C

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

@Temperature 68.0 - 572 °F
 ISO 7991
Transformation Temperature, Tg 510 °C
950 °F
ISO 7884-8
Softening Point 800 °C
1470 °F
Viscosity 10<sup>7.6</sup> dPa s; ISO 7884-3
Working Point 1210 °C
2210 °F
Viscosity 10<sup>4</sup> dPa s; ISO 7884-2
Annealing Point 560 °C
1040 °F
Viscosity 10<sup>13</sup> dPa s; ISO 7884-4
Optical Properties Metric English Comments
Refractive Index 1.475

@Wavelength 587.6 nm
 1.475

@Wavelength 587.6 nm
Descriptive Properties Value Comments
Hydrolytic Resistance Class HGB 1
ISO 719
tk100(°C) 265
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