Extrography was used for separation of coal and petroleum derived pitches into five fractions of increasing functionality and residue. Mass balance of the separations and the characteristics of fractions including elemental composition, hydrogen atom distribution, thermal behaviour by TGA and anisotropic content of semi-cokes were determined. Improved properties and carbonization behaviour of heavy fractions has discriminated the petroleum pitch A240 from the coal tar and coal hydrogenation pitches. Lack of additivity in the yield and anisotropic content of cokes from extrographic fractions and corresponding parent samples suggests that the chemical and physical interactions between constituents essentially influence carbonization behaviour of all the pitches.