Quartz Pressure Tube
Superior performance to borosilicate or metal alternatives
Excellent outgassing characteristics (≤10⁻¹¹ Torr·L/s·cm²)
Minimal thermal expansion (0.55×10⁻⁶/°C)
Customizable geometries and connection options
Description
Product Features
Ultra-High Vacuum Compatibility:
Designed for operation from atmospheric pressure down to 10⁻⁶ Torr
Precision Engineering:
Wall thickness uniformity within ±0.1mm for consistent performance
Thermal Endurance:
Maintains structural integrity from -200°C to 1000°C
Chemical Purity:
99.999% fused quartz construction with <1ppb metallic contaminants
Optical Transparency:
>90% light transmission (190-2500nm) for process monitoring
Pressure-Resistant Design:
Reinforced structure withstands 2 bar external pressure differential
Functional Capabilities
- High-vacuum sample containment and transfer
- Negative pressure chemical processing
- High-temperature vacuum furnace applications
- Inert atmosphere reaction chambers
- Leak-free gas/vapor delivery systems
Applications
- Semiconductor fabrication equipment
- Thin film deposition systems
- Vacuum distillation setups
- Analytical instrument sample chambers
- High-purity chemical processing
- Photovoltaic manufacturing
Advantages
- Superior performance to borosilicate or metal alternatives
- Excellent outgassing characteristics (≤10⁻¹¹ Torr·L/s·cm²)
- Minimal thermal expansion (0.55×10⁻⁶/°C)
- Customizable geometries and connection options
Properties
|
Physical Properties |
Values |
|
Purity |
＞99.99% |
|
Density |
2.2g/cm3 |
|
Transparency |
＞90% |
|
Mohs Hardness |
5.5--6.5 |
|
Deformation Point |
1280℃ |
|
Softening Point |
1780℃ |
|
Annealing Point |
1250℃ |
|
Specific Heat (20 - 350°C) |
670J/kg.℃ |
|
Thermal Conductivity (20°C) |
1.4W/m.℃ |
|
Heat Conductivity (w/m.k,1000 ℃ ) |
1.0-1.2 |
|
Refractive Index |
1.4585 |
|
Coefficient of Thermal Expansion |
5.5*10 -7cm/cm.℃ |
|
Hot - working Temperature |
1750--2050℃ |
|
Short - term Service Temperature |
1300℃ |
|
Long - term Service Temperature |
1100℃ |
|
Chemical Properties |
Values |
|
Acid resistant |
Strong Acid(except HF),Strong alkali, organic solution |
|
High temperatures Corrosion resistant |
Excellent |
|
Metal Impurity Content |
＜5 ppm |
|
Electrical Properties |
Values |
|
Resistivity |
7*107Ω.cm |
|
Insulation Strength |
250~400Kv/cm |
|
Dielectric Constant |
3.7~3.9 |
|
Dielectric Absorption Coefficient |
＜4*10-4 |
|
Dielectric Loss Coefficient |
＜1*10-4 |
|
Mechanical Properties |
Values |
|
Compressive Strength |
1100MPa |
|
Bending Strength |
67MPa |
|
Tensile Strength |
48MPa |
|
Poisson's Ratio |
0.14~0.17 |
|
Young's Modulus |
72000MPa |
|
Shear Modulus |
31000MPa |
Quality Assurance
- Each tube undergoes helium leak testing
- Dimensional tolerance certification
- Material purity verification (GDMS analysis)
- Clean-room packaging for critical applications
Customization Options
- Integrated heating elements
- Multiple ports or branches
- Specialized surface treatments
- Optical view ports
- Pressure-rated designs (to 5 bar)
Shipping
FAQ
Q1: What diameter and length options are available?
A: Standard range: 10-200mm OD, lengths up to 1500mm (custom sizes available)
Q2: What end connections are available?
A: Standard options include:
- Conflat (CF) flanges
- KF (NW) quick flanges
- Ground glass joints
- Custom metal-to-quartz seals
Q3: Can these Quartz Pressure Tube be repaired if damaged?
A: Limited repairs possible - most damage requires replacement
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