What are the properties of graphite powder?

Graphite powder has many characteristics and wide applications, mainly including good thermal conductivity and electrical conductivity, super high temperature resistance, good lubricity, excellent thermal shock resistance, good chemical stability, etc. ‌

• ‌Thermal conductivity and electrical conductivity‌

Graphite powder has good electrical conductivity, and its electrical conductivity is relatively high. Three times that of carbon steel, five times that of stainless steel, and 100 times higher than other non-metallic materials. At the same time, it also has good thermal conductivity, especially at high temperatures, graphite powder tends to be insulated. ‌

• High temperature resistance‌

The melting point of graphite powder is about 3900℃, and it does not melt at extremely high temperatures, showing its super high temperature resistance. ‌

• Lubricity‌

Graphite powder has good lubrication properties and a small friction coefficient. It can be used as a lubricant, especially under high speed, high temperature and high pressure conditions. ‌

• Thermal shock resistance‌

Graphite powder has good thermal shock resistance. When the temperature changes suddenly, its thermal expansion coefficient is small, maintaining good thermal stability and not easy to crack. ‌ ‌

• Chemical stability‌

At room temperature, graphite has excellent chemical stability and can resist corrosion from acids, alkalis and organic solvents.

What is graphite powder widely used for?

‌Refractory materials‌: Used to make graphite crucibles, steel ingot protective agents and metallurgical furnace linings.

‌Conductive materials‌: Used to make electrodes, brushes, carbon rods, graphite washers, etc.

‌Wear-resistant lubricating materials‌: Used as lubricants in the machinery industry, it can work at 2000°C without adding lubricating oil.

Casting, sand casting, die pressing and high-temperature metallurgical materials‌: Used to make glassware molds to improve the dimensional accuracy and surface finish of castings.

‌Other applications‌: Also includes the production of carbon film resistors, conductive carbon rods and conductive coatings, as well as fillers or performance improvers for composite materials such as rubber and plastics.

In summary, graphite powder plays an important role in many industrial fields due to its unique physical and chemical properties.