Borosilicate Color Glass Tubing & Rod

Borosilicate Color Glass Tubing&Rod

 

 

 

 

Main Composition:

SiO2: 81%

B2O3: 13%

Na2O/K2O: 4%  

 Al2O3:2%

 

Physical Property

No.

Physical performance

Numerical Value

Unit

1

Coefficient of mean linear thermal expansion(20,300)

3.3±0.1

10-6K-1

2

Transformation temperature

525±15

3

Softening point

820±10

4

Working point

1260±20

5

Density at 20

2.23±0.02

g/cm3

6

Mean thermal conductivity(20-100)

1.2

w/m2k

7

Refractive index

0.92

1

 

 

The regular stockedsizes are 12X2mm, 14X2mm, 16X2mm, 22X2mm, 25X4mm, 32X32.2mm, 32X4mm, 38X3.2mm, 38X4mm, 44X3.2mm, 44X4mm, 51X4mm and 51X4.8mm. Also we can make the size according to your requirement.

Now we have Green, Jade Green, Pink, Milky Pink, Blue, Light blue, Black, Yellow, Amber, Opaque Topaz, Purple Color etc are available.