The Carbon fiber is a new kind of high strength and high modulus fiber material with more than 95% carbon content. It is made of flake microcrystalline graphite and other organic fibers stacked along the axial direction of the fibers. The microcrystalline graphite material is obtained by carbonization and graphitization treatment. The Carbon fiber is soft and rigid, lighter in weight than aluminium, but higher in strength than iron and steel, and have the characteristics of corrosion resistance and high modulus.
It can be widely used in defense, military and civil fields. The carbon fiber is not only has the inherent characteristics of carbon materials, but also has the soft processability of textile fibers. It is a new generation of reinforcing fibers.
Carbon fiber has many excellent properties, such as high axial strength and modulus, low density, high specific properties, no creep, super high temperature resistance under non-oxidation environment, good fatigue resistance, low thermal expansion coefficient and anisotropy, good corrosion resistance, and good X-ray transmission. Good conductivity and thermal conductivity, good electromagnetic shielding, etc.
（Translated form Baidubaike）