Corning 7056 Alkali Borosilicate Crushed/Powdered Glass

Category	Ceramic , Glass , Optical , Oxide , Silicon Oxide
Manufacturer	Corning Incorporated
Trade Name
Port	Ningbo port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Corning 7056 Alkali Borosilicate Crushed/Powdered Glass.pdf
Price	EMAIL US sales@lookpolymers.com

Material Notes:

Crushed/Powdered glass available in mesh sizes 4 through 325 and can be customized. Used primarily as a Kovar Sealing Glass. This product is used in MOEMS applications. Information provided by Corning Incorporated.

Physical Properties	Metric	English	Comments
Density	2.29 g/cc	0.0827 lb/in³

Mechanical Properties	Metric	English
Modulus of Elasticity	62.8 GPa	9110 ksi
Poissons Ratio	0.21	0.21
Shear Modulus	26.5 GPa	3840 ksi

Thermal Properties	Metric	English	Comments
CTE, linear	5.15 µm/m-°C @Temperature 0.000 - 300 °C	2.86 µin/in-°F @Temperature 32.0 - 572 °F
	5.45 µm/m-°C @Temperature 25.0 - 679 °C	3.03 µin/in-°F @Temperature 77.0 - 1250 °F	Set Point
Softening Point	718 °C	1320 °F	10<sup>7.6</sup> Poise
Working Point	1058 °C	1936 °F	10<sup>4</sup> Poise
Annealing Point	512 °C	954 °F	10<sup>13</sup> Poise
Strain Point	472 °C	882 °F	10<sup>14</sup> Poise

Optical Properties	Metric	English	Comments
Refractive Index	1.487 @Wavelength 589.3 nm	1.487 @Wavelength 589.3 nm

Electrical Properties	Metric	English
Volume Resistivity	2.50e+8 ohm-cm @Temperature 350 °C	2.50e+8 ohm-cm @Temperature 662 °F
	2.00e+10 ohm-cm @Temperature 250 °C	2.00e+10 ohm-cm @Temperature 482 °F
Dielectric Constant	5.7 @Frequency 1e+6 Hz	5.7 @Frequency 1e+6 Hz
Dissipation Factor	0.0027 @Frequency 1e+6 Hz	0.0027 @Frequency 1e+6 Hz

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