| Customization: | Available |
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| Carbon Content: | High-Carbon |
| Composition: | Graphite |
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Graphite heater serves as an electric heating component crafted from graphite materials. Graphite, renowned for its excellent electrical and thermal conductivity, finds widespread application as a heating element in specialized industrial furnaces. Despite having lower strength than metals at room temperature, graphite exhibits remarkable high-temperature strength. As temperatures rise, the strength of graphite progressively increases, surpassing that of all oxides and metals.
Graphite possesses a unique combination of metallic and ceramic properties. It boasts exceptional electrical and thermal conductivity, a compact structure, and a minimal thermal expansion coefficient. These characteristics make graphite stand out as one of the top materials for superior thermal shock resistance, solidifying its position as a crucial component in the realm of high-temperature applications.
Physical and Chemical
| Bulk Density | g/cm³ | 1.75-1.9 |
| Resistivity | μΩm | 8-13 |
| Thermal Conductivity(100ºC) | W/mk | 110-120/ 130-140 |
| Shore Hardness | HSD | 42-70 |
| Flexural Strength | Mpa | 38-60 |
| Compressive Strength | Mpa | 65-135 |
| Elastic Modulus | Gpa | 9-13 |
| Porosity | % | 11-17 |
| Graininess | Micron | 8-10/ 13-15 |
More specifications can be customized upon request
The graphite heating element in a vacuum furnace has many advantages:
Excellent Thermal Conductivity: Graphite possesses outstanding thermal conductivity, allowing for rapid and uniform heat transfer within the vacuum furnace, ensuring efficient heating processes.
High-Temperature Stability: Graphite materials maintain stability at extremely high temperatures, making them suitable for applications in vacuum furnaces that require high-temperature treatments, such as metal smelting and crystal growth.
Chemical Inertness: Graphite exhibits high inertness to many chemical substances, enabling resistance to corrosion and enhancing its durability within the vacuum furnace.
Lightweight and High Strength: Graphite is a relatively lightweight material while maintaining high strength at elevated temperatures, contributing to reduced load on internal components of the furnace.
Low Thermal Expansion Coefficient: Graphite has a small thermal expansion coefficient, implying that the graphite heating element is less prone to deformation or cracking during temperature variations, thereby enhancing equipment stability.
The requirements for a graphite heater involve creating a stable thermal field within a heating furnace. Therefore, the graphite used should exhibit homogeneity and stable resistivity. In the early stages of selecting heating elements for industrial furnaces, graphite electrodes were employed, with later adoption of high-density and high-power electrodes for enhanced performance. This transition was particularly notable in processes like smelting quartz glass, where graphite electrodes served as heating elements.
As the semiconductor industry evolved, especially in the refinement of materials such as silicon, single crystal germanium, gallium, and indium, high-purity graphite with a fine and homogeneous structure emerged as the preferred choice for heating in furnaces. Additionally, in specific industrial and experimental furnaces, carbon cloth or graphite cloth found applications as heating elements.
These advancements underscore the importance of utilizing graphite with specific properties to achieve optimal performance and stability in diverse heating applications.
Enough graphite materail stock
Q1: What information should I let you know if i want to get a quotation?
A: The required material dimension (Thickness*Width*Length,diameter*length; if possible, please kindly supply us drawings).
The required more information, such as Surface Condition, Tolerance Request, The Quantity, and other mechanical and technical details.
If it is possible, please also provide the application of products, we will recommend the most suitable products with details for confirmation.
Q2: How do you gurantee the quality of the products?
A: Each step of production and finished products will be carried out inspection by QC department before storing in the warehouse. NG goods are not allowed in the completed goods warehouse.
Q3: Can you guarantee the prompt delivery?
A: Yes, when we get your inquiries, not only we will evaluate the more competitive price, but also we can get the most reasonable delivery time. So the prompt delivery can be guaranteed.
Q4: What is your lead time?
A : It usually needs about 15- 20 days after receiving the PO.
Q5 : What is your payments terms?
A : T/T, Western Union, etc., could be acceptable.
Q6 : Can we visit your company?
A : Yes, for sure, It's my pleasure to visit our company.
Q7 : What is the shipping cost?
A: The shipping cost is determined by the destination port, weight, packing size, total CBM of the products, we will try best to get the most reasonable shipping cost from the forwarders or express couriers to help you save more money.
Q8 :What is the transportation way?
A:If the Gross Weight ≤45kg, it's better by express such as TNT, DHL, FedEx,, etc.
If the Gross Weight between 45kg to 100kg, by express or by air to your nearest airport can be both considered.
If the Gross Weight ≥ 100kg ,you can choose by Air or Sea to the nearest port.
Q9 :How service you can offer your clients?
A:We provide presales service in various forms, for example, making investment budget,manufacturing planning,etc.so that customer make a reasonable plan with less cost. Moreover,we will also provide after sale service ,for example,free training about machine applications ect.
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