Clear Borosilicate Glass Rod

Clear Borosilicate Glass Rod

 

 

 

 

Main Composition:

SiO2: 81%

B2O3: 13%

Na2O/K2O: 4%  

 Al2O3: 2%

 

Physical Data

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

 

 

Fast delivery + Competitive price

High transparency, High temperature resistance, Mechanical capacity, Low COE 3.3 and lead free.

We have an excellent production team. We could produce according to your requests.

 

 

 

 

GlassRodSize

Diameter(mm)

Deviation

Roundness

Straightness

4

±0.30

0.30

3‰

6

±0.30

0.30

3‰

7

±0.30

0.30

3‰

8

±0.40

0.40

3‰

9

±0.40

0.40

3‰

10

±0.40

0.40

3‰

11

±0.50

0.50

3‰

12

±0.50

0.50

3‰

14

±0.60

0.60

3‰

16

±0.70

0.70

3‰

18

±0.80

0.80

3‰

20

±0.90

0.90

3‰

22

±1.10

1.10

3‰

24

±1.20

1.20

3‰

26

±1.30

1.30

3‰

28

±1.40

1.40

3‰

30

±1.50

1.50

3‰

32

±1.70

1.70

3‰

Standard length:1200+20mm

Colours available

Customized available