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Advanced Ceramics ZEMAT® ACL 2090 - Zero Expansion Glass-Ceramic
Categories: Ceramic; Glass; Glass Ceramic; Oxide

Material Notes: “Zero Expansion” glass-ceramic is a transparent material now in production for applications requiring ultra-low thermal expansion. The primary crystal phase is a s-eucryptite (Li2OAl2O32SiO2) solid solution and the crystal size is limited to 50-100nm to permit high transparency in the visible and near infra-red.

Information provided by Advanced Ceramics Limited (ACL)

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Physical PropertiesMetricEnglishComments
Density 2.53 g/cc0.0914 lb/in³
Weibull Modulus 6.8
@Temperature 500 °C
6.8
@Temperature 932 °F
 
Mechanical PropertiesMetricEnglishComments
Hardness, Vickers 205205kg.mm2
Modulus of Elasticity 89.6 GPa13000 ksi
Flexural Strength 98.0 MPa
@Temperature 300 °C
14200 psi
@Temperature 572 °F
Poissons Ratio 0.240.24
Shear Modulus 36.0 GPa5220 ksiCalculated
 
Electrical PropertiesMetricEnglishComments
Dielectric Constant 6.62
@Frequency 9.30e+9 Hz
6.62
@Frequency 9.30e+9 Hz
Dissipation Factor 0.072
@Frequency 9.30e+9 Hz
0.072
@Frequency 9.30e+9 Hz
 
Thermal PropertiesMetricEnglishComments
CTE, linear 0.500 µm/m-°C
@Temperature 20.0 - 100 °C
0.278 µin/in-°F
@Temperature 68.0 - 212 °F
Specific Heat Capacity 0.790 J/g-°C
@Temperature 50.0 °C
0.189 BTU/lb-°F
@Temperature 122 °F
Thermal Conductivity 1.17 W/m-K
@Temperature 50.0 °C
8.12 BTU-in/hr-ft²-°F
@Temperature 122 °F
 
Optical PropertiesMetricEnglishComments
Refractive Index 1.541.54
Transmission, Visible 90 %90 %transparent; thickness not quantified

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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CADVC06 / 470

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