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Schott Glass 8271 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 |
| Download PDF | Schott Glass 8271 Borosilicate Glass.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
Borosilicate glass, highly UV-blocked, stabilized against solarization. Used for sealing glass to KOVAR metal and backlights. 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 | 2.32 g/cc @Temperature 25.0 °C |
0.0838 lb/in³ @Temperature 77.0 °F |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Modulus of Elasticity | 60.0 GPa | 8700 ksi | |
| Poissons Ratio | 0.21 | 0.21 |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 5.20 µm/m-°C @Temperature 20.0 - 300 °C |
2.89 µin/in-°F @Temperature 68.0 - 572 °F |
ISO 7991 |
| Thermal Conductivity | 1.10 W/m-K @Temperature 90.0 °C |
7.63 BTU-in/hr-ft²-°F @Temperature 194 °F |
|
| Transformation Temperature, Tg | 505 °C | 941 °F | ISO 7884-8 |
| Softening Point | 715 °C | 1320 °F | Viscosity 10<sup>7.6</sup> dPa s; ISO 7884-3 |
| Working Point | 1040 °C | 1900 °F | Viscosity 10<sup>4</sup> dPa s; ISO 7884-2 |
| Annealing Point | 515 °C | 959 °F | Viscosity 10<sup>13</sup> dPa s; ISO 7884-4 |
| Optical Properties | Metric | English | Comments |
|---|---|---|---|
| Refractive Index | 1.502 @Wavelength 587.6 nm |
1.502 @Wavelength 587.6 nm |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Volume Resistivity | 1.6e+8 ohm-cm @Temperature 350 °C |
1.6e+8 ohm-cm @Temperature 662 °F |
|
| 1e+10 ohm-cm @Temperature 250 °C |
1e+10 ohm-cm @Temperature 482 °F |
||
| Dielectric Constant | 5.3 @Frequency 1.00e+6 Hz, Temperature 25.0 °C |
5.3 @Frequency 1.00e+6 Hz, Temperature 77.0 °F |
|
| Dielectric Loss Index | 0.0060 @Frequency 1.00e+6 Hz, Temperature 25.0 °C |
0.0060 @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) | 4.0 | DIN 52314 |
| tk100(°C) | 365 |
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