Application: Chemistry. Model: HHK70904.
Overview
The Heat Resistant Borosilicate Glass Tube and Rod is supplied as a precision glass tube / rod made from Borosilicate3.3. It is used in Chemistry. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.
Specifications
Material
Borosilicate3.3
Application
Chemistry
Color
Transparent
Model NO.
HHK70904
Property
Heat Resistant
Lighting
Flameproof light fittings others
Gifts
Decoration/grappa bottles Candlesticks Lanterns Others
Interior Decoration
Towel rails
Transport
By ship or express
Supplier
Jinan Honhai Glass Company Limited
Technical data
Physical data of COE 3.3 borosilicate glass tube
No.
Physics Performance
Numerical Value
Unit
1
Medium coefficient of linear expansion α20/300 acc.To DIN 52328
3.3 ± 0.1
10-6 K-1
2
Transformation Temperature
525 ± 15
degree Celsius
3
Upper annealing temperature
560 ± 10
degree Celsius
4
Softening point
820 ± 10
degree Celsius
5
Working temperature
1260 ± 20
degree Celsius
6
Maximum short-time working temperature
500
degree Celsius
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(20 degree Celsius -100 degree Celsius )
1.2
W/m2K
11
Temperature for the specific electrical resistance of 108Ω·cm(DIN52326)tk 100
250
degree Celsius
12
Stress-optical constant(DIN52314)K
4.0
10-6mm2/N
Composition
SiO2
B2O3
Na2O + K2O
Al2O3
approx.weight %
81
13
4
2
high borosilicate 3.3 glass tube
Description
Rate
Water resistance to ISO720
1
Water resistance to European Pharmacopoeia
1
Water resistance to USP23
1
Acid resistance Class(DIN12116)
1
Alkali resistance Class(ISO695)
2
What to specify when you request a quote
Material — listed as “Borosilicate3.3”; name the glass (borosilicate 3.3, quartz, soda-lime).OD, ID and wall — listed as “HHK70904”; 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 Why Quartz Glass Components Excel in Coffee Heating Modules . Before sending a drawing, check Thermal Conductivity of Quartz Glass & Fused Quartz: A Process Guide . A related standard product is 4-inch Borofloat 33 Glass Wafers .
FAQ
What is the Heat Resistant Borosilicate Glass Tube and Rod made of? expand_more
It is listed as Borosilicate3.3. Other grades can be quoted if your application needs different transmission, thermal or chemical properties.
Where is this precision glass tube / rod used? expand_more
Listed applications: Chemistry.
What should I include in a quote request? expand_more
Include material, od, id and wall, length and ends and straightness and bore, plus quantity and a drawing if the part is custom.
Expert advisory
Send drawings and tolerances for a DFM review and lead-time estimate.
Request a quote
