Overview
C&D high Quality Borosilicate Glass Tube with 700° C Fire Resist is a precision glass tube / rod. Optical / electrical data: sheet resistance 1.00 H. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
| Construction | Single Piece Of Fireproof Glass |
|---|---|
| Duration Of Fire Resistance | 1.00 H |
| Fire Resistance | Class A |
| Breakage and complaints | Glass shipping has always been a challenge, if any of your goods are lost, damaged during the transportation, please follow the below procedure. |
| Supplier | C&D (Qingdao) Co., Ltd. |
Technical data
| No. | Physics Performance | Numerical Value | Unit |
| 1 | Medium coefficient of linear expansion α20/300 acc.To DIN 52328 | 3.3 ± 0.1 | 10-6K-1 |
| 2 | Transformation Temperature | 525 ± 15 | Deg.C |
| 3 | Upper annealing temperature | 560 ± 10 | Deg.C |
| 4 | Softening point | 820 ± 10 | Deg.C |
| 5 | Working temperature | 260 ± 20 | Deg.C |
| 6 | Maximum short-time working temperature | 500 | Deg.C |
| 7 | 20 degree Celsius Density ρ | 2.23 ± 0.02 | g/cm3 |
| 8 | Modulus of elasticity E | 64 | 103 N/mm2 |
| 9 | Poisson's ratio | 0.20 | 1 |
| 10 | Thermal productivity(20Deg.C-100Deg.C) | 1.2 | W/m2K |
| 11 | Temperature for the specific electrical resistance of 108Ω·cm(DIN52326)tk 100 | 250 | Deg.C |
| 12 | Stress-optical constant(DIN52314)K | 4.0 | 10-6mm2/N |
What to specify when you request a quote
- Material — name the glass (borosilicate 3.3, quartz, soda-lime).
- OD, ID and wall — give outer and inner diameter or wall and their tolerances.
- Length and ends — give length, end finish and any closed or flared ends.
- Straightness and bore — state straightness and bore tolerance for precision tubing.
Engineering guides for this part
For material grades and coating options, see Borofloat 33 Glass: Material Selection for Precision Substrates. How parts like this are machined and finished is covered in Precision Bore Glass Tubing Processing: End-to-End Manufacturing for Industrial Buyers. For an application example, read Borosilicate Glass Wafers for Robust Appliance Sensor Components. Before sending a drawing, check Precision Glass Material Selection: Fused Silica vs Borosilicate & More. A related standard product is 4-inch Borofloat 33 Glass Wafers.
