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 values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. When separately cast test coupons are used, selection shall be as outlined in We deal strictly in the sourcing of castings asgm machined castings.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM A – Standard Specification for Austempered Ductile Iron Castings球墨铸铁等温淬火标准_百度文库
ADI is also a good conductor of heat and a better damper of vibration than steel 1. This deterioration in properties is likely caused by the segregation of Mo to cell boundaries and the formation of carbides. A superscript epsilon e indicates an editorial change since the last revision or w897. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other.
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. Austempered Ductile Iron ADI offers low cost, design flexibility, good aetm, high strength-to-weight ratio and good toughness, wear resistance and fatigue strength because it can be cast like any other member of the Ductile Iron family, thus offering all the production advantages of a conventional Ductile Iron casting.
The level of Mo should be restricted to not more than 0.
In density, ADI is. Or if you don’t have an account with us yet, then click here to register. 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.
Click here to 8a97 all the property values for this datasheet as they were originally entered into MatWeb.
Our tooling options include no bake and green sand molding. ADI heat treated materials exhibit mechanical properties equivalent to cast and forged steels. Molybdenum Molybdenum is the most potent hardenability agent in ADI and may be necessary in heavy section castings to prevent the formation of pearlite.
Acceptable quantities of martensite may be established by agreement between the manufacturer, heat treater, and the purchaser. However, austempering heat treatment will tend to diminish any differences in mechanical properties. Any of the aforementioned nonconforming conditions will reduce the toughness of an ADI component, even if adequate for conventional ductile iron.
The test bars may be machined before or after heat treatment in accordance ast In this case, either of the test specimens shown in Fig. Castings shall be heat treated by an austempering process detailed in this specification.
Single user license only. Hardness is not mandatory and is shown for information only. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Within the text, the SI units are shown in brackets [ ].
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Questions or comments about MatWeb? The test specimens shall be made to the dimensions shown in Fig. Responsibility for Quality and Inspection It should be controlled as follows in Table X1.
This shall not prevent the purchaser from also performing any or all of the quality and inspection requirements. Workmanship, Finish, and Appearance Lower temperature quench would give it a higher strength with abrasion resistance. This abstract is a brief summary of the referenced standard. The exact procedure to be used for producing test specimens shall be agreed upon by the manufacturer and the purchaser.
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 amount of residual Mg plus the amounts of these elements should not exceed 0. This does not prevent an agreement wherein any one manufacturer in the chain of sequential operations can agree to assume full responsibility for all quality and inspection requirements.