Products Description
Corrosion-resistant Graphite Screws Apply for Chemical Industry are high-purity graphite fasteners designed specifically for highly corrosive chemical environments. They are widely used in chemical equipment to replace metal bolts and operate stably for long periods in strong acids, strong alkalis, and high-temperature media.
Products Advantages
Corrosion Resistance: Made with high-purity graphite, which possesses natural chemical inertness, it does not corrode in strong acids, strong alkalis, and many organic solvents.
Low Coefficient of Thermal Expansion: Graphite has a low and uniform coefficient of thermal expansion, maintaining stable thread fit even under conditions of frequent temperature fluctuations.
High Purity and Low Ash Content: Raw material purity can reach ≥99.9%, with extremely low ash content, preventing impurities from precipitating and contaminating chemical media.
Precision Machining: Utilizing CNC precision machining technology, the thread accuracy is high, assembly is smooth, and it can be disassembled and reassembled multiple times.
Customization Options
Size Customization: Thread specifications (M / Imperial / Non-standard), length, head type
Material Grade: Graphite materials of different densities and purities are available.
Precision Grade: General industrial grade / High-precision assembly grade
Structure Customization: Special threads, irregular structures, non-standard connection methods
Surface Treatment: Polishing, finishing, anti-oxidation treatment
Application of the graphite screw
Application
Graphite Screw Data Sheet for your reference, if you need graphite screw, please contact with us
| W-4 | W-5 | W-6 | W-7 | W-8 | WH-5 | WH-7 | WH-8 | ||
| bulk density | g/cm³ | 1.75 | 1.85 | 1.9 | 1.82 | 1.9 | 1.68 | 1.85 | 1.9 |
| Resistivity | uΩm | 8-11 | 8-10 | 8-9 | 11-13 | 11-13 | 13-15 | 11-13 | 11-13 |
| Thermal conductivity(100℃) | W/m.k | 110-120 | 130-140 | 130-140 | 110-120 | 110-120 | 80-100 | 100-120 | 110-120 |
| Thermal expansion coefficient (room temperature - 600℃) | 10-6/℃ | 5.46 | 4.75 | 4.8 | 5.8 | 5.85 | 5.8 | 5.9 | 5.85 |
| Shore Hardness | HSD | 42 | 48 | 53 | 65 | 70 | 60 | 68 | 72 |
| Flexural strength | Mpa | 38 | 46 | 55 | 51 | 60 | 38 | 62 | 70 |
| Compressive strength | Mpa | 65 | 85 | 95 | 115 | 135 | 80 | 135 | 160 |
| Elastic modulus | GPa | 9 | 11.8 | 12 | 12 | 13 | 8.8 | 12 | 13 |
| Porosity | % | 17 | 13 | 11 | 12 | 11 | 18 | 12 | 11 |
| Ash | PPM | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 |
| Purification of ash | PPM | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| grain size | um | 13-15 | 13-15 | 8-10 | 8-10 | 8-10 | 8-10 | 7 | 5 |
| Application | common use | common use | Continuous casting, sintering, high temperature metallurgy | EDM,Photovoltaic | EDM,Photovoltaic,GLASS | EDM | common use,EDM | EDM,Photovoltaic,GLASS |
More Graphite Products for your reference
graphite bolt, graphite vane, graphite plate,graphite heater, graphite crucible
FAQ
Q: What chemical media can this graphite screw withstand?
A: It can withstand strong acids, strong alkalis, and most organic solvents, and is not prone to chemical reactions, making it suitable for most chemical working conditions.
Q: What is the maximum operating temperature?
A: It can be used continuously above 3000°C in inert or non-oxidizing environments; in air, it is recommended not to exceed 500°C.
Q: Will it cause pulverization or contamination?
A: High-purity graphite has extremely low ash content and a dense structure, and will not cause pulverization or contamination under normal operating conditions.
Q: Does it support third-party testing?
A: It supports providing test reports on density, ash content, compressive strength, dimensional tolerances, etc., and can also cooperate with third-party testing institutions.
Q: What is the minimum order quantity?
A: Standard specifications can be ordered in small batches; non-standard customized products will have their MOQ determined based on structural complexity.
Q: What is the typical delivery time?
A: Standard parts are shipped in 7–10 days; customized products typically take 15–25 days.
Q: Do you support long-term bulk supply cooperation?
A: It supports long-term stable supply, and can establish fixed specifications and inventory plans to ensure continuous delivery.
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