The Engineering and physical properties of cast iron wary with the type of iron; the designer must match the engineering requirements with al the properties of the specific type of cast iron being consiered. Machinability, e.g., is significantly affected by the type of cast iron specified. Gray cast iron is the most machinalbe; the white [...]

Cast iron is classified in to fire basic types: each type is generally based on graphite morphology as following:Gray Iron
Ductile Iron
Malleable Iron
Compacted Graphite Iron
White Iron