Wholesale Cheap Borosilicte Glass Rod Clear Color
Specification:
Borosilicate glass tube as PYREX glass tube widely used in in solar energy, chemical, pharmaceutical packaging, electric light source, craft jewelry industry scientific laboratory glassware etc.
OD:6MM-320MM WT: 0.8MM-10MM
Color:clear, amber, blue ,pink,green etc
Physical data
No. |
Physics performance |
Numerical Value |
Unit |
| 1 |
coefficient of mean linear thermal expansion(20ºC;300 ºC) |
3.3±0.1 |
10-6 K-1 |
| 2 |
Transformation Temperature |
525±15 |
ºC |
| 3 |
Softening point |
820±10 |
ºC |
| 4 |
Working point |
1260±20 |
ºC |
| 5 |
Density at 20ºC |
2.23±0.2 |
g/cm2 |
| 6 |
Mean thermal conductivity(20ºC-100ºC) |
1.2 |
W/m.K |
| 7 |
Refractive Index |
0.92 |
l |
|
Chemical Composition
| Item |
SiO2 |
B2O3 |
AL2O3 |
Na2O +K2O |
| % |
81 |
13 |
2 |
3.08 |
|
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