ASTM A897/A897M-22
Standard Specification for Austempered Ductile Iron Castings

Standard No.
ASTM A897/A897M-22
Release Date
2022
Published By
American Society for Testing and Materials (ASTM)
Latest
ASTM A897/A897M-22
Scope
1.1 This specification covers ductile iron castings that are subsequently heat treated by an austempering process as defined in 9.1. 1.2 The application of the austempering heat treatment extends the range of properties achievable in ductile iron castings. 1.3 No precise quantitative relationship can be stated between the properties of the iron in various locations of the same casting or between the properties of castings and those of a test specimen cast from the same iron (see Appendix X1). However, austempering heat treatment will tend to diminish any differences in mechanical properties. 1.4 The production of castings, machining (if required), and the austempering heat treatments may be performed by different manufacturers, as covered in Section 13. The purchaser should establish by contract agreement, at the time of ordering, the responsibility of the various parties for meeting the specification requirements. 1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.5.1 Exception—Within the text, the SI units are shown in brackets. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM A897/A897M-22 Referenced Document

  • ASTM A247 Standard Test Method for Evaluating the Microstructure of Graphite in Iron Castings
  • ASTM A370 Standard Test Methods and Definitions for Mechanical Testing of Steel Products
  • ASTM A732/A732M Standard Specification for Castings, Investment, Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
  • ASTM A834 Standard Specification for Common Requirements for Iron Castings for General Industrial Use
  • ASTM E10 Standard Test Method for Brinell Hardness of Metallic Materials*， 2023-08-03 Update
  • ASTM E23 Standard Test Methods for Notched Bar Impact Testing of Metallic Materials
  • ASTM E8/E8M Standard Test Methods for Tension Testing of Metallic Materials*， 2024-01-01 Update

ASTM A897/A897M-22 history

Standard Specification for Austempered Ductile Iron Castings


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