Since 1947, Insaco has been synonymous with excellence in the development and production of high precision machined parts. As a custom fabricator of ceramic, glass, sapphire, and other hard materials, Insaco specialize in machining parts that often require tolerances measured in millionths of an inch, and wear properties that satisfy even the most demanding applications.
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Other Glass/Quartz Materials
- Fused Quartz
- ZerodurR
- MacorR
- Corning ULER
Physical and Mechanical Properties of Corning Pyrex 7740
|
Property
|
Value
|
|
Mechanical
|
|
Density
|
2.23 gm/cc
|
|
Hardness
|
418 Knoop
|
|
Modulus of Elasticity
|
9.1 x 106 psi
|
|
Poisson's Ratio
|
|
|
Electrical
|
|
Dielectric Constant
|
4.6 (@ 1 MHz)
|
|
Volume Resistivity
|
8 x 1010ohm-cm2
|
|
Thermal
|
|
Coefficient of Thermal Expansion
|
3.3 x 10-6/°C
|
|
Thermal Conductivity
|
1.35 W/mK
|
|
Specific Heat
|
0.185 cal/g °C
|
|
Maximum Working Temperature
|
500 °C
|
|
Optical
|
|
Index of Refraction
|
1.474
|
All properties are at room temperature unless otherwise noted.
Engineering data are representative, and are not intended as absolute nor warrantable. Manufacturer's Data shown is blended from multiple sources and therefore illustrates the marketplace.
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This information has been sourced, reviewed and adapted from materials provided by INSACO Inc.
For more information on this source, please visit INSACO Inc.