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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We represent the best austempered ductile iron foundries in the USA and back it up with professional and ongoing service. When premachined test bars are to be used, it is recommended that adequate austempering be veri? The chemical composition requirements may be agreed upon between the manufacturer, heat treater, and the purchaser. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

Our tooling options include no bake and green sand molding. MatWeb is intended for personal, non-commercial use.

Warning— Achieving the required mechanical properties and austempered microstructure in the smaller cross sections of a premachined test bar does not ensure the correct response in the heavier sections of actual parts, as explained in X1. This shall not prevent the purchaser from also performing any or all of the quality sstm inspection requirements. The manufacturer s may require the purchaser to provide written agreement for any changes mutually agreed upon.

ADI offers one of the best combinations when it comes to lower costs, design flexibility, machinability and strength-to-weight ratio. Floor, manual, squeezer, cope and drag, Hunter, Sinto and Disa molding processes. Austempered Ductile Iron can be successfully produced from ductile iron castings with a wide range of chemical compositions and con?


ASTM AAM – Applied Process

Please contact us at webmaster matweb. The composition reported herein does not guarantee Ast, properties, nor is it mandatory. The form of this agreement depends upon which of the conditions in Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

We can provide raw castings or complete assemblies and everything in between painting, q897 treat and machining. Excessively high asgm of Si can suppress ausferrite in localized areas by stabilizing ferrite. For this reason, some manufacturers prefer to machine the test bars to size or near net size with some?

Highly specialized in austempered ductile iron. Manganese Manganese additions above that of the base metal composition are not recommended because Mn segregates to the last to freeze regions of the casting and will retard the formation of ausferrite if the nodule count is not sufficiently high to break up the Mn segregated region. The level of Mo should be restricted to not more than 0.

ASTM A897-A897M-16

We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. Addition of alloying elements when not required does not enchance the properties of ADI and merely adds to the cost of ast iron.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the q897 address or at phonefaxor service astm.

Check out our austempered ductile iron webpage for more information. The microstructure is uniformly formed with aus-ferrite and graphite nodules. ADI is also a good conductor of heat and a better damper of vibration than steel 1. The exact procedure to be used for producing test asfm shall z897 agreed upon by the manufacturer and the purchaser. For over 60 years, Carson Castings continues to meet your raw and machined sand and investment casting needs with ISO certified facilities.


Copper Copper may be added to ADI to increase hardenability in additions up to 0. The data has been submitted. Tension test specimens shall be machined only from Positions A preferred or B in Fig. Its strength, fatigue strength and toughness are equal or better than steel, while its damping property is five times greater than steel.

Dimensions shall conform to drawings or patterns supplied by the purchaser. The test specimens shall be made to the dimensions shown in Fig.

The iron shall conform to the mechanical property requirements including tensile strength, yield strength, elongation, impact energy, and Brinell hardness.

The 10 mm ball and kg load shall be used unless otherwise speci? Copying and networking prohibited. Requirements for the microstructure constituents such as graphite, ausferrite acicular ferrite and high carbon, stable austenitepearlite, and martensite are prescribed. ASTM A is an alloyed nodular iron which is heat treated to achieve the desired properties.

We also offer floor, manual, squeezer, cope and drag, Hunter, Sinto and Disa molding processes. Property Data This page displays only the text of a material data sheet.

However, austempering heat treatment will tend to diminish any differences in mechanical properties. During this quench an aus-ferrite microstructure is formed. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.