 Cast ductile ብረት በመደበኝነት 3 በመቶ ካርቦን በላይ ይዟል; ይህ ጠማማ ወይም የዳሌ ያለ በተፈጥሮም ወጠረ ይችላል.
Ductile Iron has more flexibility than cast iron because it typically contains over 3 percent carbon so it can be bent, twisted or deformed without fracturing.