抄録
Ductile cast iron has superior mechanical properties and economical merits, so has enlarged its application as material of small- castings, such as automobile parts. However, it has not been applied to large section castings because of its inferior quality due to graphite nodule defect. We have recently succeeded in controlling graphite nodule in large section castings. It has fine graphite nodules all over the thickness, so it has superior mechanical properties in large section castings. Here, we call it as 'Super Ductile'.
