ASTM A289/A289M-97(2013)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:A289/A289M −97 (Reapproved 2013)
Standard Specification for
Alloy Steel Forgings for Nonmagnetic Retaining Rings for
Generators
This standard is issued under the fixed designationA289/A289M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope lines ordering information, manufacturing requirements, test-
ing methods and retesting procedures, marking, certification,
1.1 This specification covers nonmagnetic alloy steel retain-
product analysis variation, and additional supplementary re-
ing ring forgings for generators.
quirements.
1.2 The values stated in either SI units or inch-pound units
3.2 If the requirements of this specification are in conflict
are to be regarded separately as standard. The values stated in
with the requirements of Specification A788/A788M, the
each system may not be exact equivalents; therefore, each
requirements of this specification shall prevail.
system shall be used independently of the other. Combining
values from the two systems may result in non-conformance 3.3 Supplementary requirements of an optional nature are
with the standard. provided. They shall apply only when specified by the pur-
chaser.
1.3 Unless the order specifies the applicable “M” specifica-
tion designation, the material shall be furnished to the inch-
4. Manufacture
pound units.
4.1 Thesteelshallbemadebytheelectro-slag-remelt(ESR)
process. The electrodes shall be made by either the basic
2. Referenced Documents
electric furnace or ladle refining processes.
2.1 ASTM Standards:
4.2 Sufficient discard shall be taken from each ingot to
A342/A342M Test Methods for Permeability of Feebly
secure freedom from piping and undue segregation.
Magnetic Materials
A370 Test Methods and Definitions for Mechanical Testing
4.3 Forged rings shall be solution treated following hot
of Steel Products
working and prior to the cold expansion procedure.
A531/A531M Practice for Ultrasonic Examination of
4.4 Rings shall be rough machined prior to cold expansion
Turbine-Generator Steel Retaining Rings
or final heat treatment.
A788/A788M Specification for Steel Forgings, General Re-
4.5 Rings shall be expanded by an appropriate method such
quirements
as segmented dies, tapered plug, etc. in the temperature range
E45 Test Methods for Determining the Inclusion Content of
of 60 to 390°F [15 to 200°C] in order to develop the required
Steel
tensile properties.
E112 Test Methods for Determining Average Grain Size
E165/E165M Practice for Liquid Penetrant Examination for
4.6 After cold expansion, the rings shall be heated to
General Industry
between 575 and 750°F [300 to 400°C] at a rate not to exceed
75°F [40°C]/h, held at this temperature for 6 to 12 h, and then
3. Ordering Information and General Requirements
slow cooled to ambient temperature.
3.1 Material supplied to this specification shall conform to
5. Chemical Requirements
the requirements of Specification A788/A788M, which out-
5.1 Heat Analysis—The heat analysis obtained from sam-
pling in accordance with Specification A788/A788M shall
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
comply with Table 1 of this specification.
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.06 on Steel Forgings and Billets.
5.2 Product Analysis—When a product analysis is per-
Current edition approved May 15, 2013. Published May 2013. Originally
formed at the request of the purchaser, the provisions of Table
approved in 1946. Last previous edition approved in 2008 as A289/A289M – 97
1 of Specification A788/A788M shall apply. The analysis shall
(2008). DOI: 10.1520/A0289_A0289M-97R13.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
be made from a forging representing each heat.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on NOTE 1—The material shown in Table 1 of A289/A289M was formerly
the ASTM website. known as Class C.
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A289/A289M−97 (2013)
TABLE 1 Chemical Requirements
8.2 Tangentially oriented tension test samples shall be
Composition, weight % located at the midwall location of an integral prolongation
Carbon 0.10 max forged at one or both ends of the ring, as shown in Fig. 1. The
Manganese 17.5–20.0
specimens shall be removed after cold working and subsequent
Phosphorus 0.060 max
stress relief.
Sulfur 0.015 max
Silicon 0.80 max
8.3 A minimum of one set of three tangentially oriented
Nickel 2.00 max
Charpy V-notch specimens shall be removed from the inside
Chromium 17.5–20.0
Nitrogen 0.45-0.80
diameter location of the test prolongation as shown in Fig. 1.
Titanium 0.10 max
The notch shall be aligned parallel to the longitudinal axis of
Aluminum 0.04 max
the ring.The purchaser may specify the side of the specimen to
Vanadium 0.25 max
be notched and that the distance of the root of the notch from
the inside diameter of the ring be different from that shown in
Fig. 1.
6. Mechanical Properties
9. Metall
...