| |
| Physical Properties | Metric | English | Comments |
|---|
| Density | 2.54 g/cc | 0.0918 lb/in³ |
| Porosity | 0.00 % | 0.00 % |
| |
| Chemical Properties | Metric | English | Comments |
|---|
| Acid Class, SR | 2.0 | 2.0 |
| Alkali Class, AR | 1.0 | 1.0 |
| |
| Mechanical Properties | Metric | English | Comments |
|---|
| Knoop Microhardness | 570 | 570 |
| Modulus of Elasticity | 93.0 GPa | 13500 ksi |
| Flexural Strength | 135 MPa | 19600 psi |
| Poissons Ratio | 0.25 | 0.25 |
| Shear Modulus | 37.2 GPa | 5400 ksi |
| |
| Electrical Properties | Metric | English | Comments |
|---|
Volume Resistivity  | 200000 ohm-cm
@Temperature 350 °C | 200000 ohm-cm
@Temperature 662 °F |
| | 4.00e+6 ohm-cm
@Temperature 250 °C | 4.00e+6 ohm-cm
@Temperature 482 °F |
| Dielectric Constant | 7.8
@Frequency 1e+6 Hz,
Temperature 25.0 °C | 7.8
@Frequency 1e+6 Hz,
Temperature 77.0 °F |
| Dielectric Loss Index | 0.019
@Frequency 1e+6 Hz,
Temperature 25.0 °C | 0.019
@Frequency 1e+6 Hz,
Temperature 77.0 °F |
| |
| Thermal Properties | Metric | English | Comments |
|---|
| CTE, linear | -0.560 µm/m-°C
@Temperature -50.0 - 100 °C | -0.311 µin/in-°F
@Temperature -58.0 - 212 °F |
| | -0.540 µm/m-°C
@Temperature 0.000 - 50.0 °C | -0.300 µin/in-°F
@Temperature 32.0 - 122 °F |
| | -0.280 µm/m-°C
@Temperature 20.0 - 300 °C | -0.156 µin/in-°F
@Temperature 68.0 - 572 °F |
| | 0.130 µm/m-°C
@Temperature 300 - 700 °C | 0.0722 µin/in-°F
@Temperature 572 - 1290 °F |
| Specific Heat Capacity | 0.800 J/g-°C
@Temperature 20.0 - 100 °C | 0.191 BTU/lb-°F
@Temperature 68.0 - 212 °F |
| Thermal Conductivity | 1.60 W/m-K
@Temperature 90.0 °C | 11.1 BTU-in/hr-ft²-°F
@Temperature 194 °F |
| Maximum Service Temperature, Air | 560 °C
@Time 1.80e+7 sec | 1040 °F
@Time 5000 hour |
| | 710 °C
@Time 1.80e+7 sec | 1310 °F
@Time 5000 hour |
| | 750 °C
@Time 3600 sec | 1380 °F
@Time 1.00 hour |
| | 925 °C
@Time 3600 sec | 1700 °F
@Time 1.00 hour |
| |
| Optical Properties | Metric | English | Comments |
|---|
| Refractive Index | 1.5415
@Wavelength 656.3 nm | 1.5415
@Wavelength 656.3 nm |
| | 1.542
@Wavelength 643.8 nm | 1.542
@Wavelength 643.8 nm |
| | 1.5445
@Wavelength 587.6 nm | 1.5445
@Wavelength 587.6 nm |
| | 1.5468
@Wavelength 546.1 nm | 1.5468
@Wavelength 546.1 nm |
| | 1.5513
@Wavelength 486.1 nm | 1.5513
@Wavelength 486.1 nm |
| | 1.5518
@Wavelength 180 nm | 1.5518
@Wavelength 180 nm |
| | 1.5566
@Wavelength 435.8 nm | 1.5566
@Wavelength 435.8 nm |
| Transmission, Visible | 66 %
@Thickness 4.00 mm,
Wavelength 400 nm | 66 %
@Thickness 0.157 in,
Wavelength 400 nm |
| | 87 %
@Thickness 4.00 mm,
Wavelength 600 nm | 87 %
@Thickness 0.157 in,
Wavelength 600 nm |
| | 90 %
@Thickness 4.00 mm,
Wavelength 700 nm | 90 %
@Thickness 0.157 in,
Wavelength 700 nm |
| IR Transmittance | 85 %
@Thickness 4.00 mm,
Wavelength 2500 nm | 85 %
@Thickness 0.157 in,
Wavelength 2500 nm |
| | 88 %
@Thickness 4.00 mm,
Wavelength 1600 nm | 88 %
@Thickness 0.157 in,
Wavelength 1600 nm |
| | 89 %
@Thickness 4.00 mm,
Wavelength 1000 nm | 89 %
@Thickness 0.157 in,
Wavelength 1000 nm |
| |
| Descriptive Properties |
|---|
| Abbé Value | 55.64 |
| | 55.89 |
| Acoustical Characteristic, vlong. | 6600 m/s |
| Appearance | Transparent |
| Color | Slight Amber Hue |
| Hydrolytic Resistance HGB | 1 |
| tk100(°C) | 175 |
| Thermal Shock Resistance (TSR) | 820°C |
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