ASTM A240/A240M-23

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: A240/A240M − 22b A240/A240M − 23
Standard Specification for
Chromium and Chromium-Nickel Stainless Steel Plate,
Sheet, and Strip for Pressure Vessels and for General
1
Applications
This standard is issued under the fixed designation A240/A240M; 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
1.1 This specification covers chromium, chromium-nickel, and chromium-manganese-nickel stainless steel plate, sheet, and strip
for pressure vessels and for general applications including architectural, building, construction, and aesthetic applications.
1.2 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.
1.3 This specification is expressed in both inch-pound and SI units. However, unless the order specifies the applicable “M”
specification designation (SI units), the material shall be furnished in inch-pound units.
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
3
2.1 ASTM Standards:
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
A923 Test Methods for Detecting Detrimental Intermetallic Phase in Duplex Austenitic/Ferritic Stainless Steels
A1084 Test Method for Detecting Detrimental Phases in Lean Duplex Austenitic/Ferritic Stainless Steels
E112 Test Methods for Determining Average Grain Size
E140 Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness,
Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness
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 Nov. 1, 2022March 1, 2023. Published November 2022June 2023. Originally approved in 1940. Last previous edition approved in 2022 as
A240/A240M – 22a.A240/A240M – 22b. DOI: 10.1520/A0240_A0240M-22B. 10.1520/A0240_A0240M-23.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-240 in Section II of that Code.
3
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

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A240/A240M − 23
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
4
2.2 SAE Standard:
J 1086 Practice for Numbering Metals and Alloys (UNS)
3. General Requirements
3.1 The following requirements for orders for material furnished under this specification shall conform to the applicable
requirements of the current edition of Specification A480/A480M.
3.1.1 Definitions,
3.1.2 General requirements for delivery,
3.1.3 Ordering information,
3.1.4 Process,
3.1.5 Special tests,
3.1.6 Heat treatment,
3.1.7 Dimensions and permissible variations,
3.1.8 Workmanship, finish and appearance,
3.1.9 Number of tests/test methods,
3.1.10 Specimen preparation,
3.1.11 Retreatment,
3.1.12 Inspection,
3.1.
...

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: A240/A240M − 23
Standard Specification for
Chromium and Chromium-Nickel Stainless Steel Plate,
Sheet, and Strip for Pressure Vessels and for General
1
Applications
This standard is issued under the fixed designation A240/A240M; 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 3
1.1 This specification covers chromium, chromium-nickel, 2.1 ASTM Standards:
and chromium-manganese-nickel stainless steel plate, sheet, A370 Test Methods and Definitions for Mechanical Testing
and strip for pressure vessels and for general applications of Steel Products
including architectural, building, construction, and aesthetic A480/A480M Specification for General Requirements for
applications. Flat-Rolled Stainless and Heat-Resisting Steel Plate,
Sheet, and Strip
1.2 The values stated in either SI units or inch-pound units
A923 Test Methods for Detecting Detrimental Intermetallic
are to be regarded separately as standard. The values stated in
Phase in Duplex Austenitic/Ferritic Stainless Steels
each system may not be exact equivalents; therefore, each
A1084 Test Method for Detecting Detrimental Phases in
system shall be used independently of the other. Combining
Lean Duplex Austenitic/Ferritic Stainless Steels
values from the two systems may result in non-conformance
E112 Test Methods for Determining Average Grain Size
with the standard.
E140 Hardness Conversion Tables for Metals Relationship
1.3 This specification is expressed in both inch-pound and
Among Brinell Hardness, Vickers Hardness, Rockwell
SI units. However, unless the order specifies the applicable
Hardness, Superficial Hardness, Knoop Hardness, Sclero-
“M” specification designation (SI units), the material shall be
scope Hardness, and Leeb Hardness
furnished in inch-pound units.
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)
4
safety concerns, if any, associated with its use. It is the
2.2 SAE Standard:
responsibility of the user of this standard to establish appro- J 1086 Practice for Numbering Metals and Alloys (UNS)
priate safety, health, and environmental practices and deter-
3. General Requirements
mine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accor- 3.1 The following requirements for orders for material
dance with internationally recognized principles on standard- furnished under this specification shall conform to the appli-
ization established in the Decision on Principles for the cable requirements of the current edition of Specification
Development of International Standards, Guides and Recom- A480/A480M.
mendations issued by the World Trade Organization Technical 3.1.1 Definitions,
Barriers to Trade (TBT) Committee. 3.1.2 General requirements for delivery,
3.1.3 Ordering information,
3.1.4 Process,
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
3
A01.17 on Flat-Rolled and Wrought Stainless Steel. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved March 1, 2023. Published June 2023. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1940. Last previous edition approved in 2022 as A240/A240M – 22b. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/A0240_A0240M-23. the ASTM website.
2 4
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale,
cation SA-240 in Section II of that Code.
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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A240/A240M − 23
3.1.5 Special tests, 5.2 When specified by the purchaser, Charpy impact tests
3.1.6 Heat treatment, shall be performed in accordance with Supplementary Require-
3.1.7 Dimensions and permissible variations, ment S1.
3.1.8 Workmanship, finish and appearance,
5.3 When specified by the purchaser, 1 % offset yield
3.1.9 Number of tests/test methods,
strength shall be measured and reported in accordance with
3.1.10 Specimen preparation,
Supplementary Requirement S3.
...