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Full Description

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 non-conformance with the standard.

1.5.1 Exception-Within the text, the SI units are shown in brackets.

 

Document History

  1. ASTM A897/A897M-16

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    Standard Specification for Austempered Ductile Iron Castings

    • Most Recent
  2. ASTM A897/A897M-15


    Standard Specification for Austempered Ductile Iron Castings

    • Historical Version
  3. ASTM A897/A897M-06(2011)


    Standard Specification for Austempered Ductile Iron Castings

    • Historical Version
  4. ASTM A897/A897M-06


    Standard Specification for Austempered Ductile Iron Castings

    • Historical Version
  5. ASTM A897/A897M-03


    Standard Specification for Austempered Ductile Iron Castings

    • Historical Version
  6. ASTM A897/A897M-02


    Standard Specification for Austempered Ductile Iron Castings

    • Historical Version
  7. ASTM A897-90(1997)


    Standard Specification for Austempered Ductile Iron Castings (Withdrawn)

    • Historical Version
  8. ASTM A897M-90(1997)


    Standard Specification for Austempered Ductile Iron Castings [Metric] (Withdrawn 2001)

    • Historical Version
  9. ASTM A897M-90


    Standard Specification for Austempered Ductile Iron Castings [Metric]

    • Historical Version