Glass Code: Corning

1737

Type

Alkali Free Borosilicate

Color

Clear

Principal Use

Optics & electrical substrates

Thermal Expansion

Multiply by 10^-7cm/cm/°C

0 - 300°C.

37.6

Viscosity Data

This data is subject to normal manufacturing variations.

Strain point °C.

666

Annealing point °C.

721

Softening point °C.

975

Density g/cm³

2. 54

Log₁₀ of Volume Resistivity ohm/cm.

250°C

13.5

Dielectric Properties

(1 KHz 20°C)

Dielectric constant

5.7

Loss factor  %

.10

Refractive index  @  589 nm

1. 518

Transmittance (t=O.7mm)

̃70% (320 nm)

̃90% (360 nm)

>90% (380-2600 nm)