ASTM A131/A131M-07
(Specification)Standard Specification for Structural Steel for Ships
Standard Specification for Structural Steel for Ships
SCOPE
1.1 This specification covers structural steel plates, shapes, bars, and rivets intended primarily for use in ship construction.
1.2 Material under this specification is available in the following categories:
1.2.1 Ordinary Strength - Grades A, B, D, CS, and E with a specified minimum yield point of 34 ksi [235 MPa], and
1.2.2 Higher Strength - Grades AH, DH, EH, and FH with a specified minimum yield point of 46 ksi [315 MPa], 51 ksi [350 MPa], or 57 ksi [390 MPa].
1.3 Shapes and bars are normally available as Grades A, AH32, and AH36. Other grades may be furnished by agreement between the purchaser and the manufacturer.
1.4 When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized. See Appendix X3 of Specification A 6/A 6M for information on weldability.
1.5 The values stated in either inch-pound units or SI units are to be regarded separately as the 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.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A 131/A 131M – 07
Standard Specification for
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Structural Steel for Ships
This standard is issued under the fixed designationA 131/A 131M; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* A 370 Test Methods and Definitions for MechanicalTesting
of Steel Products
1.1 This specification covers structural steel plates, shapes,
E 112 Test Methods for Determining Average Grain Size
bars, and rivets intended primarily for use in ship construction.
1.2 Material under this specification is available in the
3. Terminology
following categories:
3.1 Definitions of Terms Specific to This Standard:
1.2.1 Ordinary Strength—GradesA, B, D, CS, and E with a
3.1.1 control rolling, n—a steel treatment that consists of
specified minimum yield point of 34 ksi [235 MPa], and
final rolling within the range used for normalizing heat
1.2.2 Higher Strength—Grades AH, DH, EH, and FH with
treatments so that the austenite completely recrystallizes.
a specified minimum yield point of 46 ksi [315 MPa], 51 ksi
3.1.2 thermo-mechanical controlled processing, n—a steel
[350 MPa], or 57 ksi [390 MPa].
treatment that consists of strict control of the steel temperature
1.3 Shapes and bars are normally available as Grades A,
and the rolling reduction. A high proportion of the rolling
AH32, and AH36. Other grades may be furnished by agree-
reduction is to be carried out close to or below the Ar
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ment between the purchaser and the manufacturer.
transformation temperature and may involve rolling towards
1.4 When the steel is to be welded, it is presupposed that a
the lower end of the temperature range of the intercritical
welding procedure suitable for the grade of steel and intended
dual-phase region, thus permitting little if any recrystallization
use or service will be utilized. See Appendix X3 of Specifica-
of the austenite. The process may involve accelerated cooling
tion A 6/A 6M for information on weldability.
on completion of rolling.
1.5 The values stated in either inch-pound units or SI units
are to be regarded separately as the standard. Within the text,
4. Ordering Information
the SI units are shown in brackets. The values stated in each
4.1 Specification A 6/A 6M establishes the rules for the
system are not exact equivalents; therefore, each system must
ordering information that should be complied with when
be used independently of the other. Combining values from the
purchasing material to this specification.
two systems may result in nonconformance with this specifi-
4.2 Additionalorderingconsiderationsspecifictothisspeci-
cation.
fication are:
2. Referenced Documents 4.2.1 Condition (control rolled or thermo-mechanical con-
2 trol processed, if applicable).
2.1 ASTM Standards:
A 6/A 6M Specification for General Requirements for
5. Materials and Manufacture
Rolled Structural Steel Bars, Plates, Shapes, and Sheet
5.1 Rimmed steels shall not be applied.
Piling
5.2 Except for GradesAand B steel, semi-killed steels shall
not be applied.
5.3 Grades D, CS, E, AH32, AH36, AH40, DH32, DH36,
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This specification is under the jurisdiction of ASTM Committee A01 on Steel, DH40, EH32, EH36, EH40, FH32, FH36, and FH40 shall be
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
made using a fine grain practice. For ordinary-strength grades,
A01.02 on Structural Steel for Bridges, Buildings, Rolling Stock and Ships.
aluminum shall be used to obtain grain refinement. For
Current edition approved March 1, 2007. Published March 2007. Originally
higher-strength grades, aluminum, vanadium, or columbium
approved in 1931. Last previous edition approved in 2004 as A 131/A 131M – 04a
e1.
(niobium) may be used for grain refinement.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.4 Plates in all thicknesses ordered to Grade CS shall be
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
normalized. Plates in all thicknesses ordered to Grade E shall
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. be normalized, or thermo-mechanical control processed. Plates
*ASummary of Changes section appears at the end of this standard.
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A 131/A 131M – 07
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over 1 ⁄8 in. [35 mm] in thickness ordered to Grade D shall be 7.2.3 When columbium (niobium) and aluminum are used
normali
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