ASTM A469/A469M-04

Standard Specification for Vacuum-Treated Steel Forgings for Generator Rotors

SCOPE
1.1 This specification covers vacuum-treated basic electric steel forgings for generator rotors.
1.2 Supplementary requirements are provided, both in this standard and in Specification A 788, for use when additional testing, inspection or processing is required by the purchaser.
1.3 The values stated in either inch-pound or SI (metric) units are to be regarded separarely as standards. Within the text and tables, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independent of the other. Combining values from the two systems may result in nonconformance with the specification.
1.4 The values stated in either inch-pound or SI (metric) units are to be regarded separarely as standards. Within the text and tables, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independent of the other. Combining values from the two systems may result in nonconformance with the specification.
1.5 Unless the order specifies the applicable "M" specification designation, the material shall be furnished to the inch-pound units.

General Information

• Status: Historical
• Publication Date: 30-Apr-2004
• 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 A469-94a(1999) - Standard Specification for Vacuum-Treated Steel Forgings for Generator Rotors
• Effective Date: 01-May-2004
• Replaced By: ASTM A469/A469M-06 - Standard Specification for Vacuum-Treated Steel Forgings for Generator Rotors
• Effective Date: 01-Mar-2006
• Referred By: ASTM A788/A788M-23 - Standard Specification for Steel Forgings, General Requirements
• Effective Date: 01-May-2004
• Referred By: ASTM A418/A418M-15(2020) - Standard Practice for Ultrasonic Examination of Turbine and Generator Steel Rotor Forgings
• Effective Date: 01-May-2004
• Referred By: ASTM A388/A388M-19 - Standard Practice for Ultrasonic Examination of Steel Forgings
• Effective Date: 01-May-2004

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: A 469/A 469M – 04
Standard Specification for
1
Vacuum-Treated Steel Forgings for Generator Rotors
This standard is issued under the fixed designationA469/A469M; 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* A 773 Test Method for D-C Magnetic Properties of Mate-
rials Using Ring and Permeameter Procedures with D-C
1.1 This specification covers vacuum-treated basic electric
Electronic Hysteresigraphs
steel forgings for generator rotors.
A 788 Specification for Steel Forgings, General Require-
1.2 Supplementary requirements are provided, both in this
ments
standard and in Specification A 788, for use when additional
testing, inspection or processing is required by the purchaser.
3. Ordering Information and General Requirements
1.3 The values stated in either inch-pound or SI (metric)
3.1 In addition to the ordering information required by
units are to be regarded separarely as standards.Within the text
Specification A 788, the purchaser shall include with the
andtables,theSIunitsareshowninbrackets.Thevaluesstated
inquiry and order, a dimensioned drawing showing the me-
in each system are not exact equivalents; therefore, each
chanical test specimen locations, together with:
system must be used independent of the other. Combining
3.1.1 Details of any required magnetic permeability tests
values from the two systems may result in nonconformance
(6.1).
with the specification.
3.1.2 If the yield strength is to be determined at an offset of
1.4 The values stated in either inch-pound or SI (metric)
0.2 % (Table 1), and number of tests (7.1.2 and 7.1.3).
units are to be regarded separarely as standards.Within the text
3.1.3 If vertical heat treatment is required (S3).
andtables,theSIunitsareshowninbrackets.Thevaluesstated
3.1.4 If heat treatment by normalizing and tempering is
in each system are not exact equivalents; therefore, each
required (4.2.2 and 4.2.3).
system must be used independent of the other. Combining
3.1.5 If post rough machining stress relief may be omitted
values from the two systems may result in nonconformance
for forgings that have been double tempered (4.2.2).
with the specification.
3.1.6 Details for boring including dimensions, finish, timing
1.5 Unless the order specifies the applicable 9M9 specifica-
and additional testing if required (8.3 and S1).
tion designation, the material shall be furnished to the inch-
3.1.7 Any applicable instructions regarding the required
pound units.
nondestructive examinations (8).
2. Referenced Documents 3.2 Material supplied to this specification shall conform to
2 the requirements of Specification A 788, which outlines addi-
2.1 ASTM Standards:
tional ordering information, manufacturing requirements, test-
A 275/A 275M Test Method for Magnetic Particle Exami-
ing and retesting methods and procedures, marking, certifica-
nation of Steel Forgings
tion, production analysis variations, and additional
A 341 Test Method for Direct-Current Magnetic Properties
supplementary requirements.
of Materials Using D-C Permeameters and the Ballistic
3.3 Failure to comply with the applicable general require-
Test Methods
ments of SpecificationA788 constitutes nonconformance with
A 370 Test Methods and Definitions for MechanicalTesting
this specification.
of Steel Products
3.4 If the requirements of this specification are in conflict
A 418 Test Method for Ultrasonic Examination of Turbine
with the requirements of SpecificationA 788, the requirements
and Generator Steel Rotor Forgings
of this specification shall prevail.
1 4. Materials and Manufacture
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and RelatedAlloys, and is the direct responsibility of Subcommittee
4.1 The vacuum degassing requirements of Specification
A01.06 on Steel Forgings and Billets.
A 788 are mandatory.
Current edition approved May 1, 2004. Published June 2004. Originally
4.1.1 Other vacuum methods of degassing may be used if
approved in 1962. Last previous edition approved in 1999 as A 469 – 94a (1999).
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or the supplier can demonstrate their adequacy to the satisfaction
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
of the purchaser, but in this case, hydrogen testing per
Standards volume information, refer to the standard’s Document Summary page on
Supplementary Requirement S4 is mandatory.
the ASTM website.
*A Summary of Changes section appears at the end of this standard.
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