This Proceeding collects the articles presented at : "The Tenth International Symposium on the Science and Processing of Cast Iron (SPCI 10)", held in Mar del Plata, Argentina from 10th to 13th of November 2014, organized by The Institute for Research in Materials Science and Technology (INTEMA) . This symposium belongs to a series which began in Detroit, USA (1964), and was followed by meetings held at Geneva, Switzerland (1974), Stockholm, Sweden (1984), Tokyo, Japan (1989), Nancy, France (1994), Birmingham, USA (1998), Barcelona, Spain (2002), Beijing, China (2006), and Luxor, Egypt (2010). This Proceeding comprises twenty-eight peer reviewed manuscripts and twenty-one abstracts of presentations given in the Symposium. This collection brings novel information from the leading researchers in the field of Cast Irons. The subjects covered include: fundamental research on solidification and solid state transformations of cast iron, recent technologies of melting, casting, heat treatment and process control, computational modeling of cast iron transformations and processing, novel developments and applications of cast iron, and mechanical properties of Cast Iron.