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Relationship
between Strength, Ductility, and Hardness for Ductile Cast Irons
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Ductile
iron meets the performance requirements with lower casting production cost,
compared to casting a steel alloy.
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The term
"cast iron" designates an entire family of metals with a wide
variety of properties. Cast iron contains more than 2% carbon, present as
a distinct graphite phase.
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In ductile
cast iron the graphite occurs as spheroids or spherulites rather than as individual flakes as in gray iron.
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Ductile iron exhibits a linear stress-strain relation, a considerable range of yield strengths, and, as its name implies, ductility.
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