High Precision Borosilicate Glass Tubing
- Product Item : HYRD-E002
- Category： Borosilicate Glass Products
- Material: Borosilicate Glass
- Purity: 80%
- Long-Term Use Temperature: 450°
- Hardness:7 Class
High Precision Borosilicate Glass Tubing
We supply various dimensions of borosilicate glass tubes, made from good material and high precision.Mechanical Properties of High Borosilicate Glass
|
Main Chemical Composition |
SiO2 80.4%, B2O3 12.7%, Al2O3 2.4%, Na2O+K2O 4.2% |
|
Density (20℃) |
2.23g/cm3 |
|
Silicon Content |
Over 80% |
|
Hardness |
7 Class |
|
Elastic Modulus E |
64KN/mm2 |
|
Tensile Strength |
40-120Nmm-2 |
|
Poisson's Ratio U |
0.2 |
Thermal Properties of High Borosilicate Glass
|
Coefficient Of Linear Expansion (20-300℃) |
3.3*10-6K-1 |
|
Long-Term Use Temperature |
450° |
|
Maximum Working Temperature/Short-Term Use Temperature |
500°C |
|
Strain Temperature |
520℃ |
|
Annealing Temperature |
560℃ |
|
Softening Temperature |
820℃ |
|
Crystallization Temperature |
695℃-1180℃ |
|
Processing Temperature (104dpas) |
1220℃ |
|
Melting Temperature |
1680℃ |
|
Heat Resistance Temperature Difference |
270℃ |
|
Specific Heat |
0.98Jg-1K-1 |
|
Thermal Conductivity |
1.2Wm-1K-1 |
Electrical Properties of High Borosilicate Glass
Due to its low alkali content, high borosilicate glass can be used as a high insulator, so it is suitable for applications where materials with good non-conductive properties are required at high temperatures (up to 450°C). Because of the unique structure of borosilicate glass, high borosilicate glass has a neutron absorption effect.Chemical Properties of High Borosilicate Glass
|
Water resistance (ISO 719) |
Ⅰ Class |
|
Acid resistance (ISO 195) |
Ⅱ Class |
|
Alkali resistance (ISO 695) |
Ⅱ Class |
Optical Properties of High Borosilicate Glass
|
Refractive index |
1.47 |
|
Light transmittance (2mm) |
92% |
|
Glass stress optical constant |
3.8*10-6mm2/No |
