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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The data has been submitted. However, this composition is a typical, industrially successful ADI composition. The chemical composition requirements may be agreed upon between the manufacturer, heat treater, and the purchaser.
The exact procedure to be used for producing test specimens shall be agreed upon by the manufacturer and the purchaser. Floor, manual, squeezer, cope and drag, Hunter, Sinto and Disa molding processes. The amount of residual Mg plus the amounts of these elements should not exceed 0.
For over 60 years, Carson Castings continues to meet your raw and machined sand and investment casting needs with ISO certified facilities. 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.
The contents, results, and technical data from this site may not be reproduced either electronically, photographically or substantively without permission from MatWeb, LLC. A number in parentheses indicates the year of last reapproval. Highly specialized in austempered ductile iron. Lot size can be de? Proper purchasing, storage and use of charge materials will minimize the occurrence of carbides and gas defects.
Magnesium Magnesium is added to create the conditions for graphite nodules to form. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
Tempered martensitic matrices may be developed for wear resistance, but lack the ductility of either as-cast Ductile Iron or ADI. The castings should be properly gated and poured using consistent and effective treatment and inoculation techniques to yield shrink free castings. Specimens are to be prepared unnotched to dimensions in Fig.
ASTM A – Standard Specification for Austempered Ductile Iron Castings球墨铸铁等温淬火标准_百度文库
Originally approved in The level of Mo should be restricted to not more than 0. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Workmanship, Finish, and Appearance This abstract is a brief summary of the referenced standard.
Responsibility for meeting the speci? The form of this agreement depends upon which of the conditions in MatWeb is intended for personal, non-commercial use. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the s897 of infringement of such rights, are entirely their own responsibility. It also depends on the capabilities of the speci?
Combining values from the two systems may result in nonconformance with the speci? The test coupons shall be cast in open molds made of suitable core sand having a minimum wall thickness of 11?
The purchaser should establish by contract agreement, at the time of ordering, the responsibility of the various parties for meeting the speci? The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Austempered Ductile Iron can be successfully produced from ductile iron castings with a wide range of chemical compositions and con?
Requirements for the microstructure constituents such as graphite, ausferrite acicular ferrite and high carbon, stable austenitepearlite, and martensite are prescribed.
The size and type of coupon cast to represent the casting shall be at the option of the purchaser. The manufacturer s may require the purchaser to provide written agreement for any a87 mutually agreed upon. This quenching rate must exceed some critical value to attain the correct microstructure ausferrite or ausferrite and proeutectoid ferrite. Blanks from which test specimens are machined shall be cut only from Positions A or B in Aa897.
ADI is also a good conductor of heat and a better damper of vibration than steel 1.
Compressive Strength Ksi MPa.