Extruded Graphite

 

 

Extruded graphite is a highly durable material known for its excellent thermal and electrical conductivity, making it ideal for high-temperature applications. The extrusion process, where fine graphite powder is mixed with a binder and forced through a mold under pressure, results in a material with a coarser grain structure compared to isostatic graphite. This gives it the edge in terms of cost-effectiveness and versatility, especially in large-scale industrial uses.

 

While isostatic graphite is known for its fine grain and isotropic properties, extruded graphite stands out for its high thermal shock resistance and better electrical performance at higher temperatures. Its robust mechanical properties make it the go-to choice for industries like steel production, electronics, where reliability under extreme conditions is crucial.

 

 

At SHJ-CARBON, we specialize in producing extruded graphite that offers superior performance for a wide range of industrial applications. Our expertise ensures that you get the best material tailored to your needs-cost-efficient, durable, and high-performing.

 

 

Extruded graphite stands out as a highly versatile material, offering an impressive range of physical and mechanical properties that make it essential in demanding industrial environments. Below are some of the key features that highlight the value and applications of extruded graphite:

 

 

Extruded graphite is known for its remarkable thermal conductivity, typically ranging from 120 to 180 W/m·K at room temperature. This makes it highly effective in heat management applications such as thermal shields, heat exchangers, and furnace components. Its ability to transfer heat efficiently minimizes thermal stresses, making it ideal for industries requiring precision temperature control like metallurgy and chemical processing.

 

 

With an electrical resistivity between 6.5 and 8.5 μΩ·m, extruded graphite ensures excellent performance in applications that demand high electrical conductivity, such as electrodes for arc furnaces and electric vehicle battery components. It excels in environments where stable conductivity is crucial, even at elevated temperatures, making it a preferred material in both steel production and semiconductor fabrication.

 

 

The mechanical strength of extruded graphite is one of its most distinctive features. It boasts a compressive strength of up to 95 MPa and a flexural strength between 20-45 MPa. This makes it highly durable and able to withstand significant mechanical stresses, which is especially valuable in the production of casting molds, die components, and industrial tooling. Its elastic modulus ranges from 8 to 12 GPa, ensuring stability under load and resistance to deformation over time.

 

 

Thanks to its low thermal expansion coefficient (typically 1.8–4.0 x 10^-6 /°C in the 100-600°C range), extruded graphite demonstrates exceptional resistance to thermal shock. It can rapidly adjust to temperature fluctuations without cracking, making it an indispensable material for continuous casting processes, metal processing furnaces, and glass manufacturing where sudden thermal cycles are common.

 

 

Extruded graphite exhibits excellent chemical resistance, making it highly resilient against a wide range of corrosive substances, including acids, alkalis, and organic solvents. It remains stable in extreme conditions, such as in environments with high temperatures or aggressive chemicals. This property makes extruded graphite an ideal material for components used in chemical reactors, phosphoric acid production, and electrochemical applications, where both thermal and chemical resistance are required.