Ductile Iron Casting:Ductile Iron castings are produced for applications requiring strength, toughness, good machinability, and low cost. Ductile Iron contains spheroidal (nodular) shaped graphite, is higher strength than Gray Iron, responds well to Induction Hardening, and weighs about 10% less than steel for the same section size. Dotson Iron Castings produces Ductile Iron grades D60, D65, D80, and D100.
Austempered Ductile Iron Casting:
Austempering is a specialized heat treatment which transforms Ductile Iron into a high strength, wear resistant material. The material contains graphite nodules like normal Ductile Iron but also contains
an engineered matrix of Ferrite and carbon rich Austenite, referred to as Ausferrite. ADI is also useful in high fatigue-strength and high impact-strength applications. Austempered ductile iron is produced
in grade 1 through grade 5.
Standard Grades of Ductile Iron and Austempered Ductile Iron per ASTM Standards Chart
Download PDF (131 KB)
*Information from Applied Process, Inc.