Ductile Omniscriptum Ductile iron: Keith Millis, Elastic, Cast iron, Malleable iron, Ductile iron pipe, Grey iron, Yttrium, Austempering

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. 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 is much more flexible and elastic, due to its nodular graphite inclusions.