Molded Graphite Sheet

Molded Graphite Sheet is a high-performance functional material made by molding high-purity graphite powder using advanced pressing technology. Its core value lies in achieving a balanced integration of high thermal conductivity, excellent electrical insulation, and outstanding temperature resistance, which can solve the heat dissipation and sealing problems of key components in high-temperature and high-pressure industrial environments.

Note: The product supports customization

• Excellent thermal conductivity: The thermal conductivity range is 200-600 watts per meter Kelvin (tested according to ASTM D5470 standard), which can achieve efficient heat transfer and rapid heat dissipation of electronic or mechanical components.

• Reliable electrical insulation: Volume resistivity ≥ 10¹⁴ ohms · cm (tested according to IEC 60093 standard), can effectively isolate current and prevent short circuits between conductive components.

• Wide temperature resistance range: The working temperature range is -200 ℃~800 ℃ (in an inert atmosphere), -150 ℃~600 ℃ (in air), and there will be no deformation or performance degradation under extreme temperature fluctuations.

• Excellent sealing performance: Density of 1.8-2.1 grams per cubic centimeter (tested according to ASTM D792 standard), low compression ratio (5-15% under 10 megapascals pressure), ensuring a tight fit with the mating surface and preventing leakage of media (such as gases and liquids).

• Strong chemical stability: Resistant to most acids, alkalis, and organic solvents (except for strong oxidants such as concentrated nitric acid), suitable for harsh chemical environments.

• Customizable molding: Supports precision molding into various shapes (plates, rings, gaskets, complex geometric shapes), with a thickness range of 0.1 mm to 10 mm, suitable for various component installation needs.

1. Flexible graphite is too soft/fragile

    Sealing graphite paper is prone to deformation and tearing under high pressure or bolt tightening, making it unable to provide structural support.

• Molded Graphite Sheet has high strength and rigidity, with a flexural strength typically ≥ 25-40 MPa (several times that of flexible graphite). It can withstand high-pressure bolt pre tightening force and is suitable for use as load-bearing gaskets or structural components.

2. Failure caused by high temperature oxidation/corrosion

    Metal or rubber gaskets deteriorate rapidly at temperatures greater than 450 ℃ or in acidic or alkaline media.

• Molded Graphite Sheet is temperature resistant and corrosion-resistant, suitable for long-term use in air at 500 ℃ or above, and in an inert atmosphere at 2500 ℃ or above; Resistant to almost all acids (except strong oxidizing acids) and molten metals, with a lifespan far exceeding that of metal gaskets.

3. High purity requirement (pollution risk)

    Ash or metal ions can contaminate wafers/silicon rods in semiconductor/photovoltaic processes.

• Molded Graphite Sheet is high-purity and controllable, with ash content as low as<50 ppm (nuclear grade) and carbon content ranging from 99.9% to 99.99%, meeting the requirements of clean rooms.

4. Complex shapes need to be processed

    The customer requires perforated, slotted, and irregular sealing rings, and flexible graphite is difficult to precisely cut.

• Molded Graphite Sheet has good machinability and can be CNC machined into various precision shaped parts (such as EDM electrodes, crucible covers, bearings), with good dimensional stability.

5. Dual requirements of thermal management and structure

    It needs to conduct heat and bear pressure (such as the uniform heating plate of the furnace body).

• Molded Graphite Sheet has high thermal conductivity and strength, with an in-plane thermal conductivity of 80-150 W/(m · K), while maintaining structural rigidity, making it a versatile material.

• The company has passed ISO9001 quality management system and ISO14001 environmental management system certification, demonstrating its outstanding pursuit in quality control and environmentally friendly production. We have 9 patented technologies covering key areas such as graphite material preparation process and product performance optimization, providing strong support for the company's product competitiveness.

     We are not only manufacturers, but also providers of overall solutions, optimizing designs based on the characteristics of traditional industries to           achieve perfect industrial production.

• Service Guarantee

    1. Process control: Rolling accuracy ± 0.01mm, cutting error ≤ 0.5mm, ensuring high dimensional accuracy of the product. Advanced production equipment and automation control systems are used to achieve precise control of the production proces

    2. Exception management: Establish a 4-hour Root Cause Analysis (RCA) mechanism to quickly respond to quality issues and take corrective measures in a timely manner. Record and analyze abnormal situations in detail, summarize lessons learned, and prevent similar problems from happening again.

    3. Continuous improvement: The annual customer complaint rate is less than 0.3%. Through customer feedback, we continuously improve product quality and service levels, regularly carry out quality improvement activities, optimize production processes, and enhance product performance and quality stability.

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