| Category | Ceramic , Glass , Glass Ceramic |
| Manufacturer | Schott North America |
| Trade Name | Nextrema® |
| Port | Shanghai port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | Schott Nextrema® 712-3 Glass Ceramic.pdf |
| Price | EMAIL US sales@lookpolymers.com |
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 2.55 g/cc | 0.0921 lb/in³ | |
| Porosity | 0.000 % | 0.000 % | ISO 9385 |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Knoop Microhardness | 600 | 600 | HK <sub>0.1 / 20</sub>; ISO 9385 |
| Modulus of Elasticity | 92.0 GPa | 13300 ksi | ASTM C-1259 |
| Flexural Strength | 168 MPa | 24400 psi | Bending s<sub>bB</sub>; DIN EN 1288, Part 5, R45 |
| Poissons Ratio | 0.250 | 0.250 | ASTM C-1259 |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | -0.160 µm/m-°C @Temperature 20.0 - 300 °C |
-0.0889 µin/in-°F @Temperature 68.0 - 572 °F |
|
| 0.380 µm/m-°C @Temperature 300 - 700 °C |
0.211 µin/in-°F @Temperature 572 - 1290 °F |
||
| Specific Heat Capacity | 0.830 J/g-°C @Temperature 20.0 - 100 °C |
0.198 BTU/lb-°F @Temperature 68.0 - 212 °F |
|
| Thermal Conductivity | 1.70 W/m-K @Temperature 90.0 °C |
11.8 BTU-in/hr-ft²-°F @Temperature 194 °F |
DIN 51936, ASTM E 1461-01 |
| Maximum Service Temperature, Air | 560 °C @Time 1.80e+7 sec |
1040 °F @Time 5000 hour |
Inhomogeneous Heating |
| 710 °C @Time 1.80e+7 sec |
1310 °F @Time 5000 hour |
Homogeneous Heating | |
| 750 °C @Time 3600 sec |
1380 °F @Time 1.00 hour |
Inhomogeneous Heating | |
| 885 °C @Time 3600 sec |
1630 °F @Time 1.00 hour |
Homogeneous Heating |
| Optical Properties | Metric | English | Comments |
|---|---|---|---|
| Transmission, Visible | 0.000 % @Thickness 4.00 mm, Wavelength 500 nm |
0.000 % @Thickness 0.157 in, Wavelength 500 nm |
|
| 3.00 % @Thickness 4.00 mm, Wavelength 600 nm |
3.00 % @Thickness 0.157 in, Wavelength 600 nm |
||
| 18.0 % @Thickness 4.00 mm, Wavelength 700 nm |
18.0 % @Thickness 0.157 in, Wavelength 700 nm |
||
| IR Transmittance | 71.0 % @Thickness 4.00 mm, Wavelength 1000 nm |
71.0 % @Thickness 0.157 in, Wavelength 1000 nm |
|
| 75.0 % @Thickness 4.00 mm, Wavelength 1600 nm |
75.0 % @Thickness 0.157 in, Wavelength 1600 nm |
||
| 80.0 % @Thickness 4.00 mm, Wavelength 2500 nm |
80.0 % @Thickness 0.157 in, Wavelength 2500 nm |
||
| UV Transmittance | 0.000 % @Thickness 4.00 mm |
0.000 % @Thickness 0.157 in |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Volume Resistivity | 300000 ohm-cm @Temperature 350 °C |
300000 ohm-cm @Temperature 662 °F |
DIN 52326 |
| 1.00e+7 ohm-cm @Temperature 250 °C |
1.00e+7 ohm-cm @Temperature 482 °F |
DIN 52326 | |
| Dielectric Constant | 7.80 @Frequency 1.00e+6 Hz, Temperature 25.0 °C |
7.80 @Frequency 1.00e+6 Hz, Temperature 77.0 °F |
|
| Dielectric Loss Index | 0.0200 @Frequency 1.00e+6 Hz, Temperature 25.0 °C |
0.0200 @Frequency 1.00e+6 Hz, Temperature 77.0 °F |
| Chemical Properties | Metric | English | Comments |
|---|---|---|---|
| Acid Class, SR | 2.00 | 2.00 | DIN 12116 |
| Alkali Class, AR | 1.00 | 1.00 | ISO 695 |
| Descriptive Properties | Value | Comments |
|---|---|---|
| Appearance | Transparent | |
| Color | Dark Brown | |
| Hydrolytic Resistance HGB | 1 | DIN ISO 719 |
| tk100(°C) | 196 | specific electric volume resistivity of 10<sup>8</sup> O·cm |
| Thermal Shock Resistance (TSR) | 800°C | Resists cold water without cracking |