ASTM A982-02

Standard Specification for Steel Forgings, Stainless, for Compressor and Turbine Airfoils

SCOPE
1.1 This specification covers stainless steel forgings for compressor and turbine bucket, blade, and airfoil applications.
1.2 The values stated in inch-pound units are to be considered the standard.

General Information

• Status: Historical
• Publication Date: 09-Sep-2002
• ICS: 77.140.85 - Iron and steel forgings
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.06 - Steel Forgings and Billets

Relations

• Replaces: ASTM A982-01 - Standard Specification for Steel Forgings, Stainless, for Compressor and Turbine Airfoils
• Effective Date: 10-Sep-2002
• Replaced By: ASTM A982/A982M-05 - Standard Specification for Steel Forgings, Stainless, for Compressor and Turbine Airfoils
• Effective Date: 01-Mar-2005

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
Designation: A 982 – 02
Standard Specification for
Steel Forgings, Stainless, for Compressor and Turbine
1
Airfoils
This standard is issued under the fixed designation A 982; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* 5. Manufacture
1.1 This specification covers stainless steel forgings for 5.1 Melting Process—All melting processes of Specifica-
compressor and turbine bucket, blade, and airfoil applications. tion A 788 are permitted unless Supplementary Requirement
1.2 The values stated in inch-pound units are to be consid- S1 is invoked by the purchaser.
ered the standard. 5.2 Forging Process—Either the closed impression die or
the open die forging processes may be utilized unless the
2. Referenced Documents
purchaser specifies one or the other.
2.1 ASTM Standards: 5.2.1 Forging Temperature—The maximum part tempera-
A 275 Test Method for Magnetic Particle Examination of
ture during forging shall be 2150°F.
2
Steel Forgings 5.3 Heat Treatment—Heat treating all forgings is required
A 788 Specification for Steel Forgings, General Require-
in accordance with Table 1 to develop the required mechanical
2
ments properties.
E 381 Method of Macroetch Testing Steel Bars, Billets,
5.3.1 Number of Heat Treatments—Two complete heat
3
Blooms, and Forgings treatments, consisting of an austenitize, quench and temper, are
E 562 Practice for Determining Volume Fraction by Sys-
permitted. Purchaser approval is required prior to any addi-
3
tematic Manual Point Count tional heat treatments.
5.3.2 Temperature Variation—Heat treating temperatures
3. Ordering Information
shall be controlled in the range of 625°F.
3.1 In addition to the ordering information required by
5.4 Stress Relief—When heat treatment for mechanical
Specification A 788, the purchaser shall include a sketch or
properties is followed by straightening, a stress relieving heat
written description of the forging with the inquiry and order.
treatmentisrequiredatatemperaturemeetingtherequirements
of Table 1.
4. General Requirements
5.4.1 QuenchingafterStressRelief—Wateroroilquenching
4.1 Materials supplied to this specification shall conform to
of stress relieved forgings is prohibited.
the requirements of Specification A 788 which outlines addi-
6. Chemical Composition
tional ordering information, manufacturing requirements, test-
ing and retesting methods and procedures, marking, certifica-
6.1 Thesteelshallconformtotherequirementsforchemical
tion, product analysis variations and additional supplementary
composition prescribed in Table 2.
requirements.
7. Mechanical Properties
4.2 If the requirements of this specification are in conflict
with the requirements of SpecificationA 788, the requirements 7.1 Tension, Impact and Hardness Tests—All testing shall
of this specification shall prevail.
be performed after heat treatment and stress relief, as appli-
cable. The test specimens shall meet the requirements of Table
3.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
7.1.1 Number of Tests—A minimum of two forgings from
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
each lot shall be randomly selected for longitudinal tensile,
A01.06 on Steel Forgings and Billets.
Current edition approved Sept. 10, 2002. Published June 2003. Originally impact, and hardness testing. Hardness values of the tension
published in 1998. Last previous edition approved in 2001 as A 982–001.
test specimen shall be reported with the tensile data.
2
Annual Book of ASTM Standards, Vol 01.05.
3
Annual Book of ASTM Standards, Vol 03.01.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
A982–02
TABLE 1 Heat Treatment, °F
Grade A Grade B Grade C Grade D Grade E Grade F
Classes1&2 Class1 Class1 Class2 Classes1&2 Class1 Class2 Class1
Austenitizing 1725-1775 1600-1750 1825-1875 1725-1875 1875-1925 2075-2125 1725-1775 1875-1925
Quenching Air or liquid Air or liquid Air or liquid Air or liquid Air or liquid Air or liquid Air or liquid Air or liquid
Single tempering 1050 min 1050 min 1050 min 1050 min 1150 min 1250 min 1100 min . . .
Double tempering . . . . . . 1025 min 1025 min . . . . . . . . . . . .
Aging . . . . . . . . . . . . . . . . . . . . . 1135-1165
Stress Relievin
...