ASTM-A897 Standard Specification for Austempered Ductile Iron Castings

ASTM-A897 - 2022 EDITION - CURRENT
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Standard Specification for Austempered Ductile Iron Castings
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Scope

1.1 This specification covers ductile iron castings that are subsequently heat treated by an austempering process as defined in 8.1.

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 in this specification are stated in inch-pound units.

Note 1-A companion specification, A897M, has been developed in which the values are stated in SI units. Each specification is independent and the mathematical conversions are not exact equivalents.

Keywords

Austempered ductile iron castings; Iron castings-ductile; austempered ductile iron castings, spec., (for metric see A 897M); ICS Number Code 77.140.80 (Iron and steel castings)

To find similar documents by ASTM Volume:

01.02 (Ferrous Castings; Ferroalloys)

To find similar documents by classification:

77.140.80 (Iron and steel castings)

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Document Number

ASTM-A0897_A0897M-22

Revision Level

2022 EDITION

Status

Current

Modification Type

Reapproval

Publication Date

Oct. 10, 2022

Document Type

Specification

Page Count

11 pages

Committee Number

A04.02