ASTM A666/A666M-24
(Specification)Standard Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar
Standard Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar
ABSTRACT
This specification covers austenitic stainless steels in the annealed and normally required cold-worked conditions. They shall be formed in different shapes such as sheets, strips, plates and flat bars. The steels shall adhere to specified chemical composition requirements. Mechanical properties such as yield strength, tensile strength, elongation, hardness, and bending shall be determined. The specimens shall be subjected to tension test, free-bend test, and controlled-bend or V-block test.
SCOPE
1.1 This specification covers austenitic stainless steels in the annealed and normally required cold-worked conditions for various structural, pressure vessel, magnetic, cryogenic, and heat-resisting applications.
1.2 The application of this specification, or the use of material covered by this specification does not automatically allow usage in pressure vessel applications. Only annealed conditions of grades specifically approved by the ASME code are permitted for pressure vessel use.
1.3 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable M specification designation (SI units), the inch-pound units shall apply. The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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Designation: A666/A666M − 24
Standard Specification for
Annealed or Cold-Worked Austenitic Stainless Steel Sheet,
1
Strip, Plate, and Flat Bar
This standard is issued under the fixed designation A666/A666M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 2. Referenced Documents
2
1.1 This specification covers austenitic stainless steels in the 2.1 ASTM Standards:
annealed and normally required cold-worked conditions for A240/A240M Specification for Chromium and Chromium-
various structural, pressure vessel, magnetic, cryogenic, and Nickel Stainless Steel Plate, Sheet, and Strip for Pressure
heat-resisting applications. Vessels and for General Applications
A370 Test Methods and Definitions for Mechanical Testing
1.2 The application of this specification, or the use of
of Steel Products
material covered by this specification does not automatically
A480/A480M Specification for General Requirements for
allow usage in pressure vessel applications. Only annealed
Flat-Rolled Stainless and Heat-Resisting Steel Plate,
conditions of grades specifically approved by the ASME code
Sheet, and Strip
are permitted for pressure vessel use.
A484/A484M Specification for General Requirements for
1.3 This specification is expressed in both inch-pound units
Stainless Steel Bars, Billets, Shapes, and Forgings
and in SI units; however, unless the purchase order or contract
A751 Test Methods and Practices for Chemical Analysis of
specifies the applicable M specification designation (SI units),
Steel Products
the inch-pound units shall apply. The values stated in either SI
A941 Terminology Relating to Steel, Stainless Steel, Related
units or inch-pound units are to be regarded separately as
Alloys, and Ferroalloys
standard. The values stated in each system may not be exact
A1058 Test Methods for Mechanical Testing of Steel
equivalents; therefore, each system shall be used independently
Products—Metric
of the other. Combining values from the two systems may
E6 Terminology Relating to Methods of Mechanical Testing
result in non-conformance with the standard.
E527 Practice for Numbering Metals and Alloys in the
1.4 This standard does not purport to address all of the Unified Numbering System (UNS)
3
safety concerns, if any, associated with its use. It is the
2.2 SAE International
responsibility of the user of this standard to establish appro-
SAE J 1086 Numbering Metals and Alloys
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
3. Terminology
1.5 This international standard was developed in accor-
3.1 Definitions:
dance with internationally recognized principles on standard-
3.1.1 For definitions of terms pertaining to this standard
ization established in the Decision on Principles for the
reference should be made to Terminology A941.
Development of International Standards, Guides and Recom-
3.1.2 For definitions of terms pertaining to plate, sheet, and
mendations issued by the World Trade Organization Technical
strip reference should be made to Specification A480/A480M.
Barriers to Trade (TBT) Committee.
1 2
This specification is under the jurisdiction of ASTM Committee A01 on Steel, For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
A01.17 on Flat-Rolled and Wrought Stainless Steel. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved March 1, 2024. Published April 2024. Originally the ASTM website.
3
approved in 1972. Last previous edition approved in 2023 as A666 – 23. DOI: Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale,
10.1520/A0666_A0666M-24. PA 15096, http://www.sae.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
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A666/A666M − 24
3.1.3 For definitions of terms pertaining to flat bar reference 8.2 Flat bar tension and bend-test specimens shall be se-
should be made to Specification A484/A484M. lected from the finished material and shall be in the longitudi-
3.1.4 For definitions of terms pertaining to methods of nal direction.
mechanical testing reference should be made to Specification
8.3 Corrosion samples, if required, shall be taken from
E6.
material after final annealing and descaling and prior to cold
working.
4. Material Test Report and Certification
9. Number of Tests
4.1 In addi
...
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: A666 − 23 A666/A666M − 24
Standard Specification for
Annealed or Cold-Worked Austenitic Stainless Steel Sheet,
1
Strip, Plate, and Flat Bar
This standard is issued under the fixed designation A666;A666/A666M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification covers austenitic stainless steels in the annealed and normally required cold-worked conditions for various
structural, pressure vessel, magnetic, cryogenic, and heat-resisting applications.
1.2 The application of this specification, or the use of material covered by this specification does not automatically allow usage
in pressure vessel applications. Only annealed conditions of grades specifically approved by the ASME code are permitted for
pressure vessel use.
1.3 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract
specifies the applicable M specification designation (SI units), the inch-pound units shall apply. The values stated in either SI units
or inch-pound units are to be regarded separately as the standard. The values given in parentheses are for information only. stated
in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values
from the two systems may result in non-conformance with the standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
A240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and
for General Applications
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A480/A480M Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
A484/A484M Specification for General Requirements for Stainless Steel Bars, Billets, Shapes, and Forgings
A751 Test Methods and Practices for Chemical Analysis of Steel Products
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.17
on Flat-Rolled and Wrought Stainless Steel.
Current edition approved March 1, 2023March 1, 2024. Published March 2023April 2024. Originally approved in 1972. Last previous edition approved in 20152023 as
A666 – 15.A666 – 23. DOI: 10.1520/A0666-23.10.1520/A0666_A0666M-24.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 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 the ASTM website.
*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 ----------------------
A666/A666M − 24
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
A1058 Test Methods for Mechanical Testing of Steel Products—Metric
E6 Terminology Relating to Methods of Mechanical Testing
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
3
2.2 SAE International
SAE J 1086 Numbering Metals and Alloys
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms pertaining to this standard reference should be made to Terminology A941.
3.1.2 For definitions of terms pertaining to plate, sheet, and strip reference should be made to Specification A480/A480M.
3.1.3 For definitions of terms pertaining to flat bar reference should be made to Specification A484/A484M.
3.1.4 For
...
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