ASTM A656/A656M-12a
(Specification)Standard Specification for Hot-Rolled Structural Steel, High-Strength Low-Alloy Plate with Improved Formability
Standard Specification for Hot-Rolled Structural Steel, High-Strength Low-Alloy Plate with Improved Formability
ABSTRACT
This specification covers the three types and four strength grades of high strength low-alloy, hot rolled structural steel plate with improved formability. These steels are normally furnished in the as-rolled condition. For plates produced from coil, and furnished without heat treatment or with stress relieving only, additional testing requirements and the reporting of additional test results, of a reference material shall apply. Chemical composition requirements shall be dependent upon thickness, grade, and intended applications. Tension tests shall be executed to evaluate conformance of specimens with specified mechanical properties requirements.
SCOPE
1.1 This specification covers three types and five strength grades of high-strength low-alloy, hot rolled structural steel plate for use in truck frames, brackets, crane booms, rail cars, and similar applications. Steels that conform to this specification offer improved formability. These steels are normally furnished in the as-rolled condition. The type and strength grade furnished is as agreed upon between the manufacturer and the purchaser. The types and strength grades are shown in the tables.
1.2 The maximum thickness of plates shall be as follows:
Grade
Plate Thickness, max,
in. [mm]
50
2 [50]
60
11/2 [40]
70
1 [25]
80
1 [25]
100
1/2 [13]
1.3 The values stated in either inch-pound units or SI units are to be regarded 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 must be used independently of the other. Combining values from the two systems may result in nonconformance with this specification. See Appendix X3 of Specification A6/A6M for information on weldability.
1.4 For plates 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 test results, of Specification A6/A6M apply.
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Standards Content (Sample)
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Designation: A656/A656M −12A
StandardSpecification for
Hot-Rolled Structural Steel, High-Strength Low-Alloy Plate
1
with Improved Formability
This standard is issued under the fixed designationA656/A656M; 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. Referenced Documents
2
2.1 ASTM Standards:
1.1 This specification covers three types and five strength
A6/A6M Specification for General Requirements for Rolled
grades of high-strength low-alloy, hot rolled structural steel
Structural Steel Bars, Plates, Shapes, and Sheet Piling
plate for use in truck frames, brackets, crane booms, rail cars,
and similar applications. Steels that conform to this specifica-
3. General Requirements for Delivery
tion offer improved formability. These steels are normally
3.1 Plates furnished under this specification shall conform
furnished in the as-rolled condition. The type and strength
to the requirements of the current edition of Specification
grade furnished is as agreed upon between the manufacturer
A6/A6M, for the specific plate ordered, unless a conflict exists,
and the purchaser. The types and strength grades are shown in
in which case this specification shall prevail.
the tables.
3.2 Coils are excluded from qualification to this specifica-
1.2 The maximum thickness of plates shall be as follows:
tion until they are processed into finished plates. Plates
Grade Plate Thickness, max, produced from coil means plates that have been cut to
in. [mm]
individual lengths from a coil. The processor directly controls,
50 2 [50]
1 or is responsible for, the operations involved in the processing
60 1 ⁄2 [40]
70 1 [25]
ofacoilintofinishedplates.Suchoperationsincludedecoiling,
80 1 [25]
leveling, cutting to length, testing, inspection, conditioning,
1
100 ⁄2 [13]
heat treatment (if applicable), packaging, marking, loading for
1.3 The values stated in either inch-pound units or SI units
shipment, and certification.
are to be regarded as standard. Within the text, the SI units are
NOTE 1—For plates produced from coil and furnished without heat
shown in brackets. The values stated in each system are not
treatment or with stress relieving only, two test results are to be reported
exact equivalents; therefore, each system must be used inde-
foreachqualifyingcoil.Additionalrequirementsregardingplateproduced
from coil are described in Specification A6/A6M.
pendentlyoftheother.Combiningvaluesfromthetwosystems
may result in nonconformance with this specification. See
4. Materials and Manufacture
Appendix X3 of Specification A6/A6M for information on
4.1 The steel shall be made to fine grain practice.
weldability.
5. Chemical Composition
1.4 For plates produced from coil and furnished without
5.1 Heat analyses shall conform to the chemical require-
heat treatment or with stress relieving only, the additional
requirements,includingadditionaltestingrequirementsandthe ments given in Table 1. Dependent upon thickness, grade, and
intended application, variations in the chemical composition
reporting of additional test results, of Specification A6/A6M
apply. are permitted within the limits given in Table 1 for the
applicable type. Where it is of particular importance, the
manufacturer should be consulted for specific chemical com-
position.
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 Nov. 1, 2012. Published March 2013. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1972. Last previous edition approved in 2012 as A656/A656M – 12. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/A0656_A0656M-12A. 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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A656/A656M − 12A
TABLE 1 Chemical Requirements
NOTE 1—An ellipsis (. . .) indicates that element is not defined for that Type.
Composition, %
Elements
Type 3 Type 7 Type 8
A
Carbon, max 0.18 0.18 0.18
A
Manganese, max 1.65 1.65 1.65
Phosphorus, max 0.025 0.025 0.025
Sulfur, max 0.035 0.035 0.035
Silicon, max 0.60 0.60 0.60
B C
Vanadium, max 0.08 0.15 0.15
Nitrogen, max 0.030 0.030 0.030
B C
Columbium 0.008–0.10 0.10 max 0.10 ma
...
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