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Enhanced Performance: General Industry Coverage

The use of compacted graphite iron is continuing to grow, particularly for automobile castings.

February 1, 2001By Charles M. Boyles

The use of compacted graphite iron is continuing to grow, particularly for automobile castings. The benefits of CG iron vs. gray cast iron are its ability to handle heat better and better machinability. The author gives an overview of the material’s characteristics and discusses feed-and-speed considerations when machining CG iron.

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Glossary terms in this article

  • compacted graphite iron
    Cast iron having a graphite shape intermediate between the flake form typical of gray cast iron and the spherical form of fully spherulitic ductile cast iron. Also known as CG iron…
  • machinability
    The relative ease of machining metals and alloys.
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