Composite materials are organized materials made out of at least two perceptible stages. Applications run from basic components, for example, steel-strengthened cement, to the warm protecting tiles which play a key and indispensable part in NASA's Space Shuttle warm insurance framework which is utilized to shield the surface of the bus from the warmth of reentry into the Earth's climate. One illustration is fortified Carbon-Carbon (RCC), the light dim material which withstands reentry temperatures up to 1,510 °C (2,750 °F) and secures the Space Shuttle's wing driving edges and nose top. RCC is a covered composite material produced using graphite rayon fabric and impregnated with a phenolic pitch. Subsequent to curing at high temperature in an autoclave, the cover is pyrolized to change over the gum to carbon, impregnated with furfural liquor in a vacuum chamber, and cured-pyrolized to change over the furfuralalcohol to carbon. To give oxidation protection from reuse capacity, the external layers of the RCC are changed over to silicon carbide.