Used as a lubricant in machinery due to its layered structure that allows easy sliding between layers. Commonly found in pencils because it leaves a visible mark when drawn on surfaces. Serves as an electrode material in batteries and fuel cells owing to its electrical conductivity and stability. Employed in refractory applications such as linings for steel-making furnaces because of its high resistance to heat. Utilized in nuclear reactors as a neutron moderator. Also used in composites for aerospace and automotive parts to reduce weight while maintaining strength.