ASTM A542/A542M-19
(Specification)Standard Specification for Pressure Vessel Plates, Alloy Steel, Quenched-and-Tempered, Chromium-Molybdenum, and Chromium-Molybdenum-Vanadium
Standard Specification for Pressure Vessel Plates, Alloy Steel, Quenched-and-Tempered, Chromium-Molybdenum, and Chromium-Molybdenum-Vanadium
ABSTRACT
This specification covers pressure vessel plates, alloy steel, quenched-and-tempered, chromium-molybdenum, and chromium-molybdenum-vanadium. As a steel making practice, the steel shall be killed and shall conform to specified fine austenitic grain size requirements. Plate types A, B, C, D, and E shall be heat treated by heating to a suitable austenitizing temperature, holding for a sufficient period of time to attain uniform temperature throughout the thickness, and quenching in a suitable liquid medium by spraying or immersion. The steel shall conform to the required chemical compositions. The required mechanical properties that include tension test requirements and notch toughness requirements are presented in details.
SCOPE
1.1 This specification2 covers two types of 21/4 Cr-1 Mo and three types of Cr-Mo-V alloy steel plates for use in the quenched-and-tempered condition, intended for the fabrication of welded pressure vessels and components.
1.2 Material under this specification is available in five types, designated “A,” “B,” “C,” “D,” and “E.” Type B is identical to Type A except for restrictive limits for carbon, phosphorus, sulfur, and nickel. The material is also available in five classes having the following strength levels. Type E is available only as Class 4 and 4a.
Class
Minimum Tensile Strength, ksi [MPa]
1
105 [725]
2
115 [795]
3
95 [655]
4 and 4a
85 [585]
1.3 The maximum thickness of plates is limited only by the capacity of the chemical composition to meet the specified mechanical property requirements.
1.4 The minimum thickness of plates is limited to 3/16 in. [5 mm].
1.5 The material is intended to be suitable for fusion welding. Welding technique is of fundamental importance and it is presupposed that welding procedures will be in accordance with approved methods.
1.6 These alloy steel plates in the as-rolled condition are sensitive to cracking during flame cutting, transit, and handling. They should be shipped in the as-rolled condition only with the mutual agreement of the manufacturer and the purchaser or fabricator.
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 must be used independently of the other. Combining values from the two systems may result in nonconformance with this specification.
1.8 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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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:A542/A542M −19
Standard Specification for
Pressure Vessel Plates, Alloy Steel, Quenched-and-
Tempered, Chromium-Molybdenum, and Chromium-
1
Molybdenum-Vanadium
This standard is issued under the fixed designationA542/A542M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* SI units are shown in brackets. The values stated in each
2 system are not exact equivalents, therefore, each system must
1
1.1 Thisspecification coverstwotypesof2 ⁄4Cr-1Moand
beusedindependentlyoftheother.Combiningvaluesfromthe
three types of Cr-Mo-V alloy steel plates for use in the
two systems may result in nonconformance with this specifi-
quenched-and-tempered condition, intended for the fabrication
cation.
of welded pressure vessels and components.
1.8 This international standard was developed in accor-
1.2 Material under this specification is available in five
dance with internationally recognized principles on standard-
types, designated “A,” “B,” “C,” “D,” and “E.” Type B is
ization established in the Decision on Principles for the
identical to Type A except for restrictive limits for carbon,
Development of International Standards, Guides and Recom-
phosphorus,sulfur,andnickel.Thematerialisalsoavailablein
mendations issued by the World Trade Organization Technical
five classes having the following strength levels. Type E is
Barriers to Trade (TBT) Committee.
available only as Class 4 and 4a.
Class Minimum Tensile Strength, ksi [MPa]
2. Referenced Documents
1 105 [725]
3
2 115 [795] 2.1 ASTM Standards:
3 95 [655]
A20/A20MSpecificationforGeneralRequirementsforSteel
4 and 4a 85 [585]
Plates for Pressure Vessels
1.3 The maximum thickness of plates is limited only by the
A370Test Methods and Definitions for Mechanical Testing
capacity of the chemical composition to meet the specified
of Steel Products
mechanical property requirements.
A387/A387MSpecificationforPressureVesselPlates,Alloy
3
Steel, Chromium-Molybdenum
1.4 The minimum thickness of plates is limited to ⁄16in. [5
A435/A435MSpecification for Straight-Beam Ultrasonic
mm].
Examination of Steel Plates
1.5 The material is intended to be suitable for fusion
A577/A577MSpecification for Ultrasonic Angle-Beam Ex-
welding. Welding technique is of fundamental importance and
amination of Steel Plates
itispresupposedthatweldingprocedureswillbeinaccordance
A578/A578MSpecification for Straight-Beam Ultrasonic
with approved methods.
Examination of Rolled Steel Plates for Special Applica-
1.6 These alloy steel plates in the as-rolled condition are
tions
sensitive to cracking during flame cutting, transit, and han-
dling. They should be shipped in the as-rolled condition only 3. General Requirements and Ordering Information
with the mutual agreement of the manufacturer and the
3.1 Material supplied to this material specification shall
purchaser or fabricator.
conform to Specification A20/A20M. These requirements out-
line the testing and retesting methods and procedures, permit-
1.7 The values stated in either inch-pound units or SI units
are to be regarded separately as standard. Within the text, the ted variations in dimensions, and mass, quality and repair of
defects, marking, loading, and ordering information.
3.2 In addition to the basic requirements of this
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
specification,certainsupplementaryrequirementsareavailable
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee
A01.11 on Steel Plates for Boilers and Pressure Vessels.
Current edition approved May 1, 2019. Published May 2019. Originally
3
approved in 1965. Last previous edition approved in 2013 as A542/A542M–13. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
DOI: 10.1520/A0542_A0542M-19. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2
For ASME Boiler and Pressure Vessel Code applications, see related Specifi- Standards volume information, refer to the standard’s Document Summary page on
cation SA-542 in Section II of that Code. 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 ----------------------
A542/A542M−19
TABLE 1 Chemical Requirements
NOTE 1—Where “.” appears there is no requirement. Values are maximum unless minimum o
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: A542/A542M − 13 A542/A542M − 19
Standard Specification for
Pressure Vessel Plates, Alloy Steel, Quenched-and-
Tempered, Chromium-Molybdenum, and Chromium-
1
Molybdenum-Vanadium
This standard is issued under the fixed designation A542/A542M; 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
1
1.1 This specification covers two types of 2 ⁄4 Cr-1 Mo and three types of Cr-Mo-V alloy steel plates for use in the
quenched-and-tempered condition, intended for the fabrication of welded pressure vessels and components.
1.2 Material under this specification is available in five types, designated “A,” “B,” “C,” “D,” and “E.” Type B is identical to
Type A except for restrictive limits for carbon, phosphorus, sulfur, and nickel. The material is also available in five classes having
the following strength levels. Type E is available only as Class 4 and 4a.
Class Minimum Tensile Strength, ksi [MPa]
1 105 [725]
2 115 [795]
3 95 [655]
4 and 4a 85 [585]
1.3 The maximum thickness of plates is limited only by the capacity of the chemical composition to meet the specified
mechanical property requirements.
3
1.4 The minimum thickness of plates is limited to ⁄16 in. [5 mm].
1.5 The material is intended to be suitable for fusion welding. Welding technique is of fundamental importance and it is
presupposed that welding procedures will be in accordance with approved methods.
1.6 These alloy steel plates in the as-rolled condition are sensitive to cracking during flame cutting, transit, and handling. They
should be shipped in the as-rolled condition only with the mutual agreement of the manufacturer and the purchaser or fabricator.
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 must be used
independently of the other. Combining values from the two systems may result in nonconformance with this specification.
1.8 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.
2. Referenced Documents
3
2.1 ASTM Standards:
A20/A20M Specification for General Requirements for Steel Plates for Pressure Vessels
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A387/A387M Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum
A435/A435M Specification for Straight-Beam Ultrasonic Examination of Steel Plates
A577/A577M Specification for Ultrasonic Angle-Beam Examination of Steel Plates
A578/A578M Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications
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 A01.11
on Steel Plates for Boilers and Pressure Vessels.
Current edition approved May 1, 2013May 1, 2019. Published June 2013May 2019. Originally approved in 1965. Last previous edition approved in 20092013 as
A542/A542M – 09.A542/A542M – 13. DOI: 10.1520/A0542_A0542M-13.10.1520/A0542_A0542M-19.
2
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-542 in Section II of that Code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on 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 ----------------------
A542/A542M − 19
TABLE 1 Chemical Requirements
NOTE 1—Where “.” appears there is no requirement. Values are maximum unless minimum or a range is indicated.
Composition, %
Element
Type A Type B Type C Type D Type E
Carbon:
Heat analysis 0.15 0.11–0.15 0.10–0.15 0.11–0.15 0.10–0.15
Product analysis 0.18 0.09–0.18 0.08–0.18 0.09–0.18 0
...
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