Posted on: June 26, 2020 Posted by: admin Comments: 0


ADI; ASTM AM, ASTM (in-lb units) ASTM M (SI units) Austempered Ductile Iron (ADI) offers low cost, design flexibility. ASTM A is an alloyed nodular iron which is heat treated to achieve the desired properties. Austempered ductile iron (ADI) is a. This standard is issued under the fixed designation A/AM; the number 1 This specification is under the jurisdiction of ASTM Committee A04 on Iron.

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ASTM A is an alloyed nodular iron which is heat treated to achieve the desired properties. Austempered ductile iron ADI is a strong, light and wear resistant material.

ADI is also a good conductor of heat and a better damper of vibration than steel 1. The ast of certain elements – specifically Cu, Ni, Mo – would be specified by the heat treater for improved heat treatability. Compressive Strength Ksi MPa. Check out our austempered ductile iron webpage for more information.


ADI Aztm Benefits Heat treating ADI involves a complicated quenching process in a liquid salt solution that is kept at a strictly controlled temperature.

ASTM A897-A897M-16

The grade of ADI is determined by the chemistry of the metal at the foundry level and the quench temperature utilized at the heat treating company. During this quench an aus-ferrite microstructure is formed. The microstructure is uniformly formed with aus-ferrite and graphite nodules.

This makes the material stronger and tougher than heat treated ductile iron. Grade 1 ADI would be quenched at a higher temperature range, giving it a higher toughness with abrasion resistance.

aatm Lower temperature quench would give it a higher strength with abrasion resistance. ADI heat treated materials exhibit mechanical properties equivalent to cast and forged steels. Another benefit of designing with ADI is the improved abrasion resistance properties.

Even though ADI has great abrasion resistance properties it can also be machined. Machining can be done before or after heat treatment.


ASTM A Grade 3 () Austempered Ductile Iron

Austempered Ductile Iron Case Study. Ductile Iron Machining Advantages. The data has been submitted.


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