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Schott Glass 8531 Soft 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 8531 Soft Glass.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
Soft glass, free from Na, of high lead content, high dielectric constant Encapsulation of semiconductor components at low temperature (diodes)Information provided by SCHOTT AG.
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 4.31 g/cc @Temperature 25.0 °C |
0.156 lb/in³ @Temperature 77.0 °F |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Modulus of Elasticity | 52.0 GPa | 7540 ksi | |
| Poissons Ratio | 0.24 | 0.24 |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 9.10 µm/m-°C @Temperature 20.0 - 300 °C |
5.06 µin/in-°F @Temperature 68.0 - 572 °F |
ISO 7991 |
| Thermal Conductivity | 0.700 W/m-K @Temperature 90.0 °C |
4.86 BTU-in/hr-ft²-°F @Temperature 194 °F |
|
| Transformation Temperature, Tg | 435 °C | 815 °F | ISO 7884-8 |
| Softening Point | 585 °C | 1090 °F | Viscosity 10<sup>7.6</sup> dPa s; ISO 7884-3 |
| Working Point | 820 °C | 1510 °F | Viscosity 10<sup>4</sup> dPa s; ISO 7884-2 |
| Annealing Point | 430 °C | 806 °F | Viscosity 10<sup>13</sup> dPa s; ISO 7884-4 |
| Optical Properties | Metric | English | Comments |
|---|---|---|---|
| Refractive Index | 1.70 @Wavelength 587.6 nm |
1.70 @Wavelength 587.6 nm |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Volume Resistivity | 6.30e+9 ohm-cm @Temperature 350 °C |
6.30e+9 ohm-cm @Temperature 662 °F |
|
| 1.00e+11 ohm-cm @Temperature 250 °C |
1.00e+11 ohm-cm @Temperature 482 °F |
||
| Dielectric Constant | 9.5 @Frequency 1.00e+6 Hz, Temperature 25.0 °C |
9.5 @Frequency 1.00e+6 Hz, Temperature 77.0 °F |
|
| Dielectric Loss Index | 0.00090 @Frequency 1.00e+6 Hz, Temperature 25.0 °C |
0.00090 @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 1 | ISO 719 |
| Stress-optical Coefficient K (10-6mm2N-1) | 2.2 | DIN 52314 |
| tk100(°C) | 450 |
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