ASTM A737/A737M-09(2013)
(Specification)Standard Specification for Pressure Vessel Plates, High-Strength, Low-Alloy Steel
Standard Specification for Pressure Vessel Plates, High-Strength, Low-Alloy Steel
ABSTRACT
This specification covers high-strength low-alloy steel plates for service in welded pressure vessels and piping components. This material is particularly intended for piping and pressure vessel applications where high strength and improved toughness are required. Two grades, designated B and C, are covered. The steel shall be killed and shall conform to the fine austenitic grain size requirements specified. The material shall be normalized by heating to a suitable temperature which produces an austenitic structure holding a sufficient time to attain uniform heat throughout the material, and cooling in air. The steel shall conform to the requirements as to chemical compositions specified. The material as represented by the tension test specimen shall conform to the requirements specified.
SCOPE
1.1 This specification2 covers high-strength low-alloy steel plates for service in welded pressure vessels and piping components.
1.2 This material is particularly intended for piping and pressure vessel applications where high strength and improved toughness are required.
1.3 Two grades, designated B and C, are covered by this specification. Grade B provides a minimum yield strength of 50 ksi [345 MPa]. Grade C provides a minimum yield strength of 60 ksi [415 MPa].
1.4 The maximum thickness of plates is limited only by the capacity of the chemical composition and heat treatment to meet the specified mechanical property requirements; however, current practice normally limits the maximum thickness to 4 in. [100 mm] for each grade.
1.5 Grade C in the as-rolled condition is sensitive to cracking during flame cutting, transit, and handling, particularly in thicknesses over 2 in. [50 mm]. Plates should not be shipped in the as-rolled condition only except by mutual agreement between the manufacturer and the purchaser.
1.6 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 must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: A737/A737M −09 (Reapproved 2013)
Standard Specification for
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Pressure Vessel Plates, High-Strength, Low-Alloy Steel
This standard is issued under the fixed designationA737/A737M; 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 A20/A20M SpecificationforGeneralRequirementsforSteel
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Plates for Pressure Vessels
1.1 This specification covers high-strength low-alloy steel
A435/A435M Specification for Straight-Beam Ultrasonic
plates for service in welded pressure vessels and piping
Examination of Steel Plates
components.
A577/A577M Specification for Ultrasonic Angle-Beam Ex-
1.2 This material is particularly intended for piping and
amination of Steel Plates
pressure vessel applications where high strength and improved
A578/A578M Specification for Straight-Beam Ultrasonic
toughness are required.
Examination of Rolled Steel Plates for Special Applica-
1.3 Two grades, designated B and C, are covered by this tions
specification. Grade B provides a minimum yield strength of
3. General Requirements and Ordering Information
50 ksi [345 MPa]. Grade C provides a minimum yield strength
3.1 Material supplied to this specification shall conform to
of 60 ksi [415 MPa].
the requirements of Specification A20/A20M. These require-
1.4 The maximum thickness of plates is limited only by the
mentsoutlinethetestingandretestingmethodsandprocedures,
capacity of the chemical composition and heat treatment to
permitted variations in dimensions and mass, quality, repair of
meetthespecifiedmechanicalpropertyrequirements;however,
defects, marking, loading, and ordering information.
currentpracticenormallylimitsthemaximumthicknessto4in.
3.2 In addition to the basic requirements of this
[100 mm] for each grade.
specification, certain supplementary requirements are available
1.5 Grade C in the as-rolled condition is sensitive to
when additional control, testing, or examination is required to
cracking during flame cutting, transit, and handling, particu-
meet end use requirements. The purchaser is referred to the
larly in thicknesses over 2 in. [50 mm]. Plates should not be
listed supplementary requirements in this specification and to
shipped in the as-rolled condition only except by mutual
the detailed requirements in Specification A20/A20M.
agreement between the manufacturer and the purchaser.
3.3 If the requirements of this specification are in conflict
1.6 The values stated in either inch-pound units or SI units
with the requirements of Specification A20/A20M, the require-
are to be regarded separately as standard. Within the text, the
ments of this specification shall prevail.
SI units are shown in brackets. The values stated in each
system are not exact equivalents; therefore, each system must
4. Manufacture
be used independently of the other. Combining values from the
4.1 Steelmaking Practice—The steel shall be killed and
two systems may result in nonconformance with the specifi-
shall conform to the fine austenitic grain size requirement of
cation.
Specification A20/A20M.
2. Referenced Documents
5. Heat Treatment
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2.1 ASTM Standards:
5.1 Thematerialshallbenormalizedbyheatingtoasuitable
temperature which produces an austenitic structure, but not
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exceeding 1700°F [925°C], holding a sufficient time to attain
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
uniform heat throughout the material, and cooling in air.
A01.11 on Steel Plates for Boilers and Pressure Vessels.
5.2 If approved by the purchaser, cooling rates faster than
Current edition approved Oct. 1, 2013. Published October 2013. Originally
approved in 1976. Last previous edition approved in 2009 as A737/A737M – 09.
air cooling are permitted for improvement of strength or
DOI: 10.1520/A0737_A0737M-13.
toughness, provided the plates are subsequently tempered in
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
the temperature range from 1100 to 1300°F [595 to 705°C].
cation SA-737 in Section II of that code.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.3 When the fabricator elects to perform the heat treatment
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
in 5.1 and 5.2, the manufacturer shall normalize plates con-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. formingtoGradeCwithintherangefrom1650to1850oF[900
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