Glass Code: Schott; Duran^®

8330

Type

Borosilicate

Color

Clear

Principal Use

General           Lab Ware

Thermal Expansion

Multiply by
10^-7cm/cm/°C

0 - 300°C.

33

25°C. to setting point

35

Upper Working Temp. for annealed glass (Mechanical considerations only)

Normal service °C.

230

Extreme service °C.

490

Upper Working Temp. for tempered glass (Mechanical considerations only)

Normal service °C

260

Extreme service °C.

290

Thermal Shock Resistance

(15x15cm annealed plates) This data is approx.

3.2mm Thick °C

160

6.4mm Thick °C

130

12.7mm Thick °C

90

Thermal Stress Resistance °C.

54

Viscosity Data

(These data are subject to normal manufacturing variations.)

Strain point °C.

510

Annealing point °C.

560

Softening point °C.

825

Working point °C.

1260

Density g/cm³

2. 23

Young's Modulus (multiply by 10³Kg/mm²)

6. 4

Poisson's Ratio

. 20

Log₁₀ of Volume Resistivity ohm/cm.

25°C

15. 0

250°C

8

350°C.

6. 5

Dielectric Properties

(1 MHz 20°C)

Power factor %

. 50

Dielectric constant

4. 6/td>

Loss factor %

2. 6

Refractive index

1. 473

Stress-Optical Coefficient, (nm/cm)/(Kg/mm²)

Mm^{2 ۰}N^-1