ASTM A572/A572M-21e1

Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel

ABSTRACT
This specifiation covers the standard requirements for Grades 42 [290], 50 [345], 55 [380], 60 [415], and 65 [450] of high-strength low-alloy columbium-vanadium structural steel shapes, plates, sheet piling, and bars for applications in bolted, welded, and riveted structures in bridges and buildings. The alloy shall conform to the required contents of columbium, vanadium, titanium, and nitrogen. Permissible values for the product thickness and size is given. Tensile requirements (including yield point, tensile strength, and minimum elongation) and alloy content are also specified. General delivery and test report requirements are also cited.
SCOPE
1.1 This specification covers five grades of high-strength low-alloy structural steel shapes, plates, sheet piling, and bars. Grades 42 [290], 50 [345], and 55 [380] are intended for riveted, bolted, or welded structures. Grades 60 [415] and 65 [450] are intended for riveted or bolted construction of bridges, or for riveted, bolted, or welded construction in other applications.  
1.2 For applications, such as welded bridge construction, where notch toughness is important, notch toughness requirements are to be negotiated between the purchaser and the producer.  
1.3 Specification A588/A588M shall not be substituted for Specification A572/A572M without agreement between the purchaser and the supplier.  
1.4 The use of columbium (niobium), vanadium, titanium, nitrogen, or combinations thereof, within the limitations noted in Section 5, is required; the selection of type (1, 2, 3, or 5) is at the option of the producer, unless otherwise specified by the purchaser. (See Supplementary Requirement S90.)  
1.5 The maximum thicknesses available in the grades and products covered by this specification are shown in Table 1.    
1.6 When the steel is to be welded, a welding procedure suitable for the grade of steel and intended use or service is to be utilized. See Appendix X3 of Specification A6/A6M for information on weldability.    
1.7 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system is to be used independently of the other, without combining values in any way.  
1.8 The text of this specification contains notes or footnotes, or both, that provide explanatory material. Such notes and footnotes, excluding those in tables and figures, do not contain any mandatory requirements.    
1.9 For structural products produced from coil and furnished without heat treatment or with stress relieving only, the additional requirements, including additional testing requirements and the reporting of additional tests, of Specification A6/A6M apply.  
1.10 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.

General Information

• Status: Published
• Publication Date: 14-May-2021
• ICS: 77.140.10 - Heat-treatable steels
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.02 - Structural Steel for Bridges, Buildings, Rolling Stock and Ships

Standards Content (Sample)

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:A572/A572M −21 American Association State
Highway and Transportation
Officals Standard
AASHTO No.: M223
Standard Specification for
High-Strength Low-Alloy Columbium-Vanadium Structural
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Steel
This standard is issued under the fixed designationA572/A572M; 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.
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ε NOTE—Editorial corrections made to the Summary of Changes section in June 2021.
1. Scope* system are not exact equivalents; therefore, each system is to
be used independently of the other, without combining values
1.1 This specification covers five grades of high-strength
in any way.
low-alloy structural steel shapes, plates, sheet piling, and bars.
Grades 42 [290], 50 [345], and 55 [380] are intended for
1.8 Thetextofthisspecificationcontainsnotesorfootnotes,
riveted, bolted, or welded structures. Grades 60 [415] and 65
or both, that provide explanatory material. Such notes and
[450] are intended for riveted or bolted construction of bridges,
footnotes, excluding those in tables and figures, do not contain
or for riveted, bolted, or welded construction in other applica-
any mandatory requirements.
tions.
1.9 For structural products produced from coil and fur-
1.2 For applications, such as welded bridge construction,
nished without heat treatment or with stress relieving only, the
where notch toughness is important, notch toughness require-
additional requirements, including additional testing require-
ments are to be negotiated between the purchaser and the
ments and the reporting of additional tests, of Specification
producer.
A6/A6M apply.
1.3 Specification A588/A588M shall not be substituted for
1.10 This international standard was developed in accor-
Specification A572/A572M without agreement between the
dance with internationally recognized principles on standard-
purchaser and the supplier.
ization established in the Decision on Principles for the
1.4 The use of columbium (niobium), vanadium, titanium,
Development of International Standards, Guides and Recom-
nitrogen, or combinations thereof, within the limitations noted
mendations issued by the World Trade Organization Technical
in Section 5, is required; the selection of type (1, 2, 3, or 5) is
Barriers to Trade (TBT) Committee.
at the option of the producer, unless otherwise specified by the
purchaser. (See Supplementary Requirement S90.)
2. Referenced Documents
1.5 The maximum thicknesses available in the grades and
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2.1 ASTM Standards:
products covered by this specification are shown in Table 1.
A6/A6M Specification for General Requirements for Rolled
1.6 When the steel is to be welded, a welding procedure
Structural Steel Bars, Plates, Shapes, and Sheet Piling
suitable for the grade of steel and intended use or service is to A36/A36M Specification for Carbon Structural Steel
be utilized. See Appendix X3 of Specification A6/A6M for
A514/A514M Specification for High-Yield-Strength,
information on weldability. Quenched and Tempered Alloy Steel Plate, Suitable for
Welding
1.7 The values stated in either inch-pound units or SI units
A588/A588M Specification for High-Strength Low-Alloy
are to be regarded separately as standard. Within the text, the
Structural Steel, up to 50 ksi [345 MPa] Minimum Yield
SI units are shown in brackets. The values stated in each
Point, with Atmospheric Corrosion Resistance
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
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A01.02 on Structural Steel for Bridges, Buildings, Rolling Stock and Ships. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 15, 2021. Published May 2021. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1966. Last previous edition approved in 2018 as A572/A572M – 18. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/A0572_A0572M-21E01. 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
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A572/A572M−21
TABLE 1 Maximum Product Thickness or Size
Yield Point, min Maximum Thickness or Size
Struct
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