Large diameter quartz glass tube ,quartz tube reactor,quartz test tube
It's with tight size tolerance, slinky form and excellent feature. Melting point at 1730 degree,
mainly apply for Thermocouples, samplers and high temperature parts. This products providing
to Europe, America, the all and the one quality accord with international standard.
We could make many kind further quartz products according your demand. It is used in thermocouple and equipment of industry.
Quartz glass tube phsical properties
Physical Properties
|
Density
|
2.2±0.05 (g/cm³)
|
1.Thermal stability: cooling from 1100°C to 20°C for three
times,No crack.
2.Heating to 1100°C for one hour ,No color change
|
|
Hardness
|
5.5-6.5 (Mohs')
|
|
Design Tensile Strength
|
4.8X107(N/m²)
|
|
Design Compression Strength
|
>1.1X109 (N/m²)
|
|
Coefficient of Thermal Expansion(20°C-300°C)
|
5.7X10-7 (cm/cm°C)
|
|
Thermal Conductivity (20°C)
|
1.4 (W/M.°C)
|
|
Specific heat(20°C)
|
670 (J/kg.°C)
|
|
Electrical Resistivity (350°C)
|
7x107(Ω.cm)
|
|
Dielectric Constant
|
3.75
|
|
Dielectric Strength
|
5x107(v/m)
|
|
Softening Point
|
1680 (°C)
|
|
Annealing Point
|
1210 (°C)
|
|
Strain point
|
1120 (°C)
|
|
Short-period working temperature
|
1300 (°C)
|
|
Long-period working temperature
|
1100 (°C)
|
Quartz glass tube Chemical elements composition :
Chemical Elements Composition (unit: ppm)
|
SiO2
|
Al
|
B
|
Ca
|
Co
|
Cu
|
Fe
|
K
|
Li
|
Mg
|
Mn
|
Ni
|
Ti
|
Na
|
|
99.97%
|
20
|
0.2
|
2.0
|
0.5
|
0.3
|
1.0
|
3.5
|
1.0
|
0.5
|
0.5
|
0.5
|
2.0
|
3.5
|
