Since ductile iron was developed in the 1940s, this remarkable metal has proved its value in tens of thousands of
engineering and casting applications. Ductile iron is created by an alloying process which converts the crack-promoting
graphite flakes of gray iron into nodules. Ductile iron casting may also be called "nodular iron". With this
microstructural transformation, the metal acquires superior ductility, elongation characteristics, and machinability.
The ductile iron family offers the design engineer a unique combination of strength, wear resistance, fatigue resistance,
and toughness, as well as excellent ductility characteristics. In all its grades, ductile iron exhibits mechanical
properties that make it an ideal alloy for the automotive industry and heavy duty applications throughout the world.