ASTM A897 Grades of ADI

Carson Castings ( specializes in ADI sand castings weighing 1# to 500# in flask sizes up to 48”x48”. We offer highly specialized expertise in austempered ductile iron.

We have found that austempered ductile iron (ADI) offers the best combination of low cost, design flexibility, good machinability, and a high strength-to-weight ratio as well as good durability, wear resistance and fatigue strength properties. A heat-treated form of as-cast ductile iron, ADI has found successful applications in a variety of industries including construction, mining, agriculture, automotive, railroad and heavy truck.

ASTM A897 ADI Grade 900 / 130 is primarily utilized for applications requiring increased strength and toughness while maintaining a practical level of ductility and impact resistance. Commonly used in fabrication-to-casting conversion projects, ADI grade 1 offers mechanical performance that is often comparable to steels, without the added cost.


Source: Applied Process, Livonia, Michigan