Ductile iron definitions

Ductile iron

Ductile iron, also known as ductile cast iron, nodular cast iron, spheroidal graphite iron, spherulitic graphite cast iron and SG iron, is a type of cast iron invented in 1943 by Keith Millis. While most varieties of cast iron are brittle, ductile iron has much more impact and fatigue resistance, due to its nodular graphite inclusions. On October ...
Found on http://en.wikipedia.org/wiki/Ductile_iron

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Ductile iron

See SG iron.
Found on http://www.metalbulletin.com/Glossary.html

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Ductile Iron

See Nodular Iron
Found on https://steelforge.com/literature/steelog-the-5000-word-metals-glossary/

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