Compacted graphite iron (CGI), also known as vermicular graphite iron (GJV, VG,[1]JV[2] or GGV from the German: "Gusseisen mit Vermiculargraphit"[3]) especially in non-English speaking countries,[4] is a metal which is gaining popularity in applications that require either greater strength, or lower weight than cast iron.
R.D. Schelleng obtained a patent for the production of compacted graphite iron in 1965.[5]
^Dawson, Dr. Steve (2008), "Compacted Graphite Iron – A Material Solution for Modern Diesel Engine Cylinder Blocks and Heads", Archived copy(PDF), World Foundry Congress, Chennai, India, pp. 93–99, archived from the original(PDF) on 2011-07-26, retrieved 2010-01-18.{{citation}}: CS1 maint: archived copy as title (link) CS1 maint: location missing publisher (link)