The most significant property of graphite is its dimensional strength and stability at ultra-high temperatures. It resists cracking, warping, shrinking, or distortion even when temperatures exceed 2500^oC.

Graphite is resistant to both thermal shock and chemical attack, and can act as either a thermal conductor or insulator, depending on the application. At the same time, it is electrically conductive and naturally lubricating. Essentially inert, graphite is considered to be environmentally safe and non-toxic. While standard synthetic graphite is quite pure, extremely pure grades are available for special applications such as research and elemental analysis.

It can also be processed into a variety of forms from felts and foils to composites and precisely machined components.


Uses of Graphite

Application Why Graphite Works Crucibles High purity. Excellent resistance to thermal shock and chemical attack. Non-wetting by most molten metals. Electrical Heating Elements With electrical properties falling between those of metals and ceramics, the electrical resistivity can be varied over a considerable range. Bushings Self-lubrication and durability in the absence of petroleum-based lubricants, at temperatures to 1,200 F Sintering Trays and Boats Thermal stability, low wettability and low specific heat. EDM Electrodes Electrical conductivity, resistance to wear from electrical arcing and excellent machinability into complex shapes. Molds Dimensional stability, low wettability and high purity. Seal Faces Self-lubrication, dimensional stability and resistance to chemical attack. Continuous Casting Dies Dimensional stability, excellent machinability high thermal conductivity and self-lubrication.