ASTM A573/A573M-20

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.
Designation:A573/A573M −20
Standard Specification for
1
Structural Carbon Steel Plates
This standard is issued under the fixed designationA573/A573M; 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* mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This specification covers structural quality carbon-
manganese-silicon steel plates in three tensile strength ranges.
2. Referenced Documents
2
NOTE 1—This specification was originally intended primarily for
2.1 ASTM Standards:
construction of storage tanks used at ambient temperatures when im-
A6/A6M Specification for General Requirements for Rolled
proved toughness was needed over that available in semi-killed ingot cast
Structural Steel Bars, Plates, Shapes, and Sheet Piling
steels.
3. General Requirements for Delivery
1.2 Plates covered by this specification are limited to a
maximum thickness of 1.5 in. [40 mm].
3.1 Plates furnished under this specification shall conform
to the requirements of the current edition of Specification
1.3 If the steel is to be welded, it is presupposed that a
A6/A6M, unless a conflict exists in which case this specifica-
welding procedure suitable for the grade of steel and intended
tion shall prevail.
use or service will be utilized. See Appendix X3 of Specifica-
tion A6/A6M for information on weldability.
4. Chemical Composition
1.4 The values stated in either inch-pound units or SI units
4.1 The heat analysis shall conform to the requirements
are to be regarded separately as standard. Within the text, the
given in Table 1.
SI units are shown in brackets. The values stated in each
4.2 The product analysis shall conform to the requirements
system are not necessarily exact equivalents; therefore, to
given in Table 1 subject to the product analysis tolerances in
ensure conformance with the standard, each system shall be
Specification A6/A6M.
used independently of the other, and values from the two
systems shall not be combined. 5. Tension Test
1.5 This international standard was developed in accor-
5.1 The plates, as represented by the tension test specimens,
dance with internationally recognized principles on standard- shall conform to the tensile requirements given in Table 2.
ization established in the Decision on Principles for the
6. Keywords
Development of International Standards, Guides and Recom-
6.1 carbon steel; plates; structural steel; toughness; welded
construction
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
2
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 July 1, 2020. Published July 2020. Originally approved contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
in 1966. Last previous edition approved in 2013 as A573/A573M – 13. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/A0573_A0573M-20. 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 ----------------------
A573/A573M−20
TABLE 1 Chemical Requirements (Heat Analysis)
Composition, %
Grade 58 Grade 65 Grade 70
[400] [450] [485]
Carbon, max:
1
⁄2 in. [13 mm] and under 0.23 0.24 0.27
1 1
Over ⁄2 in. [13 mm] to 1 ⁄2 in., 0.23 0.26 0.28
[40 mm], incl
A
Manganese 0.60–0.90 0.85–1.20 0.85–1.20
Phosphorus, max 0.030 0.030 0.030
Sulfur, max 0.030 0.030 0.030
Silicon 0.10–0.35 0.15–0.40 0.15–0.40
B
Aluminum (total), min 0.020 0.020 0.020
A
For each reduction of 0.01 percentage point below the specified maximum for carbon, an increase of 0.06 percentage points above the specified maximum for
manganese is permitted, up to a maximum of 1.50 % for Grades 58 and 65; and up to a maximum of 1.60 % for Grade 70.
B
Minimum aluminum content does not apply to plates with widths up to and including 15 in. [380 mm].
A
TABLE 2 Tensile Requirements
Grade 58 Grade 65 Grade 70
[400] [450] [485]
Tensile strength, ksi 58–71 65–77 70–90
[MPa] [400–490] [450–530] [485–620]
Yield point, min, ksi 32 35 42
[MPa] [220] [240] [290]
Elongation in 8 in. [200 21 20 18
B,C
mm] min, %
Elongation in 2 in. [50 2
...