Physical and Mechanical Properties of Corning Pyrex 7740 by Insaco

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

0.20

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.

This information has been sourced, reviewed and adapted from materials provided by INSACO Inc.

For more information on this source, please visit INSACO Inc.

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