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Physicochemical properties of high purity graphite powder

Overview of high purity graphite powder

Graphite powder is a soft gray powder. It is greasy and will pollute the paper. The hardness is 1 ~ 2. Along the vertical direction, the hardness can increase to 3 ~ 5 with the increase of impurities. The specific gravity is 1.9 ~ 2.3. Under the condition of oxygen isolation, the melting point is above 3000 ℃, which is one of the high temperature resistant minerals.  


Physicochemical properties of high purity graphite powder

At room temperature, the chemical properties of graphite powder are relatively stable and insoluble in water, dilute acid, dilute alkali and organic solvents; React with oxygen at different high temperatures to produce carbon dioxide or carbon monoxide; In halogen, only fluorine can react directly with elemental carbon; Graphite powder is easily oxidized by acid under heating. At high temperature, it can also react with many metals to form metal carbides, which can be melted at high temperature.  

High purity graphite powder has high temperature resistance, conductivity, lubricity, chemical stability, plasticity and thermal shock resistance.  

Nanocrystalline high-purity graphite has excellent quality, high fixed carbon composition, less harmful residues, extremely low sulfur and iron composition, stable physical properties and will not be damaged by strong acids and alkalis. It enjoys a high reputation in the world high-purity graphite sales market and the reputation of "Jinsha".

Application of high purity graphite powder

High purity graphite powder can be used as refractory, conductive material, lubricating material, casting, sand, molding and high-temperature metallurgical material. Graphite powder can also prevent boiler scaling and can be used as pigment and polishing agent.  

1. As refractory materials: graphite and its products have the properties of high temperature resistance and high strength. It is mainly used to manufacture graphite crucible in metallurgical industry. Graphite is often used as protective agent for ingot and metallurgical furnace lining in steelmaking.  

2. As a conductive material: used in the electrical industry to manufacture electrodes, brushes, carbon rods, graphite gaskets, telephone parts, TV picture tube coatings, etc.  

3. As a lubricating material: graphite is often used as a lubricant in the machinery industry. Lubricating oil can not be used at high speed, high temperature and high pressure, while graphite material can slide at high speed at the temperature of 200 ~ 2000 ℃ without lubricating oil. Piston cups, sealing rings and bearings made of graphite are widely used in a variety of equipment conveying corrosive media. They do not need lubricating oil during operation. Graphite is also a good lubricant for many metal processing (wire drawing, pipe drawing).  

4. Castings, aluminum castings, molding and high-temperature metallurgical materials: because the thermal expansion coefficient of graphite is small and can change the thermal shock, it can be used as glass mold. After using graphite black metal castings, the size meets the requirements, the surface is smooth and the yield is high. It can be used without processing or slight processing, so as to save a lot of metal.  

5. Graphite powder can also prevent boiler scaling. Relevant unit tests show that the amount of graphite powder added to water (about 4 ~ 5g per ton of water) can prevent boiler surface scaling. In addition, graphite coated on metal chimneys, roofs, bridges and pipes can prevent rust.  

6. Graphite powder can be used as pigment and polishing agent.  

Price of high purity graphite powder

Affected by the impact of the world economic recovery on the graphite industry, the world demand for graphite has increased steadily in recent years. According to the United States Geological Survey (USGS), graphite flakes are mainly distributed in China, Australia, Brazil, Canada, Germany and Madagascar. China has the largest output of 750000 tons, accounting for 68% of the world's Graphite output. The main exporters of natural graphite are China, Mexico, Canada, Brazil and Madagascar. These countries export 97% of the world's graphite, accounting for 90% of graphite exports. Native graphite is mainly exported from Mexico, bulk graphite from Sri Lanka, and crystalline flake graphite from China, Canada and Madagascar.

The price of high-purity graphite varies randomly with production cost, transportation cost, international situation, exchange rate and supply-demand relationship of high-purity graphite market. TanKi new materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality and low-cost nano materials and chemicals by providing a full set of customized services. If you are looking for high purity graphite, please feel free to contact me for the latest price of high purity graphite.

High purity graphite supplier

As a global supplier of high-purity graphite, Tanki new materials Co., Ltd. has rich experience in the performance, application and cost-effective manufacturing of advanced and engineering materials. The company has successfully developed a series of powder materials (including oxides, carbides, nitrides, single metals, etc.), high-purity targets, functional ceramics and structural devices, and provided OEM services.

Natural Flake Graphite Powder C Properties

Other Names

nature flake graphite, natural graphite, flake graphite



Compound Formula


Molecular Weight



Black solid

Melting Point

3652 - 3697 °C (sublimes)

Boiling Point

4200 °C


1.8 g/cm3

Solubility in H2O (water)


Electrical Resistivity



2.55 Paulings

Specific Heat


Thermal Conductivity

6.0 W/m-K

Thermal Expansion

4.9 µm/m-K

Young's Modulus

21 GPa

Exact Mass


Heat of Vaporization

128 K-Cal/gm atom at 4612 °C

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