ASTM A723/A723M-10
(Specification)Standard Specification for Alloy Steel Forgings for High-Strength Pressure Component Application
Standard Specification for Alloy Steel Forgings for High-Strength Pressure Component Application
ABSTRACT
This specification covers the standard requirements for high-strength quenched and tempered alloy steel forgings for pressure vessels, isostatic presses, shock tubes, and similar components. These materials are not intended for welded construction. Three grades of nickel-chromium-molybdenum steels and six classes of increasing tensile strength are included. The strength class, section size, and configuration of the forging will largely dictate the applicable type of steel. Materials shall be manufactured by steel melting processes, rough machining, and final heat treatment, which shall consist of normalizing, reaustenitization, liquid quenching, and tempering. Conformance of the forging specimens to chemical composition requirements shall be analyzed by heat and product analyses. Proper sampling methods for mechanical properties testing shall be done by any of four possible ways, as judged appropriate. Steel specimens shall also undergo straight-beam and angle-beam ultrasonic examination, and magnetic particle examination procedures to evaluate nondestructive examination requirements. Repair welding of the forgings shall not be permitted.
SCOPE
1.1 This specification covers requirements for high-strength quenched and tempered alloy steel forgings for pressure vessels, isostatic presses, shock tubes, and similar components.
1.2 These materials are not intended for welded construction.
1.3 Three grades of nickel-chromium-molybdenum steels and six classes of increasing tensile strength are included. The strength class, section size, and configuration of the forging will largely dictate the applicable type(s) of steel.
1.4 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as the standard. 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 independently 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.
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Designation: A723/A723M −10
StandardSpecification for
Alloy Steel Forgings for High-Strength Pressure Component
1
Application
This standard is issued under the fixed designationA723/A723M; 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* A788/A788M Specification for Steel Forgings, General Re-
2 quirements
1.1 This specification covers requirements for high-
2.2 Other Standards:
strength quenched and tempered alloy steel forgings for pres-
4
ASME Boiler and Pressure Vessel Code
sure vessels, isostatic presses, shock tubes, and similar com-
ponents.
3. Ordering Information and General Requirements
1.2 These materials are not intended for welded construc-
3.1 In addition to the ordering information required by
tion.
Specification A788/A788M, the purchaser shall include with
1.3 Three grades of nickel-chromium-molybdenum steels
the inquiry and order a detailed drawing, sketch, or written
and six classes of increasing tensile strength are included. The
description of the forging and the method of selecting test
strength class, section size, and configuration of the forging
location (see 6.2). When appropriate, the areas of significant
will largely dictate the applicable type(s) of steel.
loading in the forging shall be designated. The purchaser may
also include appropriate supplementary requirements from
1.4 The values stated in either inch-pound units or SI
Specification A788/A788M as well as from this specification.
(metric) units are to be regarded separately as the standard.
Within the text and tables, the SI units are shown in brackets.
3.2 Material supplied to this specification shall conform to
The values stated in each system are not exact equivalents;
the requirements of Specification A788/A788M, which out-
therefore,eachsystemmustbeusedindependentlyoftheother.
lines additional ordering information, manufacturing
Combining values from the two systems may result in noncon-
requirements, testing and retesting methods and procedures,
formance with the specification.
marking, certification, product analysis variations, and addi-
tional supplementary requirements.
1.5 Unless the order specifies the applicable “M” specifica-
tion designation, the material shall be furnished to the inch-
3.3 If the requirements of this specification are in conflict
pound units.
with the requirements of Specification A788/A788M, the
requirements of this specification shall prevail.
2. Referenced Documents
3.4 When forgings are required to be in compliance with
3
2.1 ASTM Standards:
Division 3 of the ASME Boiler and Pressure Vessel Code,
A275/A275M Practice for Magnetic Particle Examination of
Supplementary Requirement S6 should be specified.
Steel Forgings
A370 Test Methods and Definitions for Mechanical Testing
4. Materials and Manufacture
of Steel Products
4.1 Melting Practice—The steel melting procedures of
A388/A388M Practice for Ultrasonic Examination of Steel
Specification A788/A788M shall apply except that the open-
Forgings
hearth process shall not be used, and that the steel shall be
vacuum degassed prior to or during the pouring of the ingot, in
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
order to remove objectionable gases, particularly hydrogen.
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
4.1.1 Use of secondary remelting or refining operations may
A01.06 on Steel Forgings and Billets.
be considered for particularly demanding applications.
Current edition approved Nov. 1, 2010. Published December 2010. Originally
approved in 1975. Last previous edition approved in 2008 as A723/A723M – 08.
4.2 Discard—Sufficient discard shall be taken from each
DOI: 10.1520/A0723_A0723M-10.
ingottosecurefreedomfrompipingandexcessivesegregation.
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
cation SA–723/SA–723M in Section II of that Code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from American Society of Mechanical Engineers (ASME), ASME
Standards volume information, refer to the standard’s Document Summary page on International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
the ASTM website. www.asme.org.
*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
1
---------------------- Page: 1 ----------------------
A723/A723M − 10
4.3 Heat Treatment: supplier and approved b
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:A723/A723M–08 Designation: A723/A723M – 10
Standard Specification for
Alloy Steel Forgings for High-Strength Pressure Component
1
Application
This standard is issued under the fixed designationA723/A723M; 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*
2
1.1 This specification covers requirements for high-strength quenched and tempered alloy steel forgings for pressure vessels,
isostatic presses, shock tubes, and similar components.
1.2 These materials are not intended for welded construction.
1.3 Three grades of nickel-chromium-molybdenum steels and six classes of increasing tensile strength are included. The
strength class, section size, and configuration of the forging will largely dictate the applicable type(s) of steel.
1.4 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as the standard. 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 independently 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.
2. Referenced Documents
3
2.1 ASTM Standards:
A275/A275M Practice for Magnetic Particle Examination of Steel Forgings
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A388/A388M Practice for Ultrasonic Examination of Steel Forgings
A788/A788M Specification for Steel Forgings, General Requirements
2.2 Other Standards:
4
ASME Boiler and Pressure Vessel Code
3. Ordering Information and General Requirements
3.1 In addition to the ordering information required by SpecificationA788/A788M, the purchaser shall include with the inquiry
and order a detailed drawing, sketch, or written description of the forging and the method of selecting test location (see 6.2).When
appropriate, the areas of significant loading in the forging shall be designated. The purchaser may also include appropriate
supplementary requirements from Specification A788/A788M as well as from this specification.
3.2 Material supplied to this specification shall conform to the requirements of Specification A788/A788M, which outlines
additional ordering information, manufacturing requirements, testing and retesting methods and procedures, marking, certification,
product analysis variations, and additional supplementary requirements.
3.3 IftherequirementsofthisspecificationareinconflictwiththerequirementsofSpecificationA788/A788M,therequirements
of this specification shall prevail.
3.4 When forgings are required to be in compliance with Division 3 of the ASME Boiler and Pressure Vessel Code,
Supplementary Requirement S6 should be specified.
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.06
on Steel Forgings and Billets.
Current edition approved MarchNov. 1, 2008.2010. Published March 2008.December 2010. Originally approved in 1975. Last previous edition approved in 20022008 as
A723/A723M – 028. DOI: 10.1520/A0723_A0723M-108.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA–723/SA–723M in Section II of that Code.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
www.asme.org.
*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.
1
---------------------- Page: 1 ----------------------
A723/A723M – 10
4. Materials and Manufacture
4.1 Melting Practice—The steel melting procedures of Specification A788/A788M shall apply except that the open-hearth
process shall not be used, and that the steel shall be vacuum degassed prior to or during the pouring of the ingot, in order to remove
objectionable gase
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:A723/A723M–08 Designation: A723/A723M – 10
Standard Specification for
Alloy Steel Forgings for High-Strength Pressure Component
1
Application
This standard is issued under the fixed designationA723/A723M; 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*
2
1.1 This specification covers requirements for high-strength quenched and tempered alloy steel forgings for pressure vessels,
isostatic presses, shock tubes, and similar components.
1.2 These materials are not intended for welded construction.
1.3 Three grades of nickel-chromium-molybdenum steels and six classes of increasing tensile strength are included. The
strength class, section size, and configuration of the forging will largely dictate the applicable type(s) of steel.
1.4 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as the standard. 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 independently 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.
2. Referenced Documents
3
2.1 ASTM Standards:
A275/A275M Practice for Magnetic Particle Examination of Steel Forgings
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A388/A388M Practice for Ultrasonic Examination of Steel Forgings
A788/A788M Specification for Steel Forgings, General Requirements
2.2 Other Standards:
4
ASME Boiler and Pressure Vessel Code
3. Ordering Information and General Requirements
3.1 In addition to the ordering information required by SpecificationA788/A788M, the purchaser shall include with the inquiry
and order a detailed drawing, sketch, or written description of the forging and the method of selecting test location (see 6.2).When
appropriate, the areas of significant loading in the forging shall be designated. The purchaser may also include appropriate
supplementary requirements from Specification A788/A788M as well as from this specification.
3.2 Material supplied to this specification shall conform to the requirements of Specification A788/A788M, which outlines
additional ordering information, manufacturing requirements, testing and retesting methods and procedures, marking, certification,
product analysis variations, and additional supplementary requirements.
3.3 IftherequirementsofthisspecificationareinconflictwiththerequirementsofSpecificationA788/A788M,therequirements
of this specification shall prevail.
3.4 When forgings are required to be in compliance with Division 3 of the ASME Boiler and Pressure Vessel Code,
Supplementary Requirement S6 should be specified.
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.06
on Steel Forgings and Billets.
Current edition approved MarchNov. 1, 2008.2010. Published March 2008.December 2010. Originally approved in 1975. Last previous edition approved in 20022008 as
A723/A723M – 028. DOI: 10.1520/A0723_A0723M-108.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA–723/SA–723M in Section II of that Code.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
www.asme.org.
*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.
1
---------------------- Page: 1 ----------------------
A723/A723M – 10
4. Materials and Manufacture
4.1 Melting Practice—The steel melting procedures of Specification A788/A788M shall apply except that the open-hearth
process shall not be used, and that the steel shall be vacuum degassed prior to or during the pouring of the ingot, in order to remove
objectionable gase
...
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