ASTM A736/A736M-17
(Specification)Standard Specification for Pressure Vessel Plates, Low-Carbon Age-Hardening Nickel-Copper-Chromium-Molybdenum-Columbium (Niobium) Alloy Steel
Standard Specification for Pressure Vessel Plates, Low-Carbon Age-Hardening Nickel-Copper-Chromium-Molybdenum-Columbium (Niobium) Alloy Steel
ABSTRACT
This specification covers two grades of low-carbon age-hardening alloy steel plates for welded pressure vessels and piping components. The two grades are nickel-copper-chromium-molybdenum-columbium and nickel-copper-manganese-molybdenum-columbium alloy steel. The heat treatment procedure for class 1, 2, 3 plates are presented. The steel shall conform to the required chemical compositions. Mechanical property requirements of the steel plates that include tension test requirements and notch-toughness requirements are presented in details.
SCOPE
1.1 This specification2 covers low-carbon age-hardening alloy steel plates for welded pressure vessels and piping components. The specification covers nickel-copper-chromium-molybdenum-columbium (niobium) steel.
1.2 Plates under this specification are available as follows:
1.2.1 Available in Grade A, Class 3 only.
1.2.1.1 Quenched and precipitation heat treated with a minimum specified tensile strength of 85 ksi for thinner plates and 75 and 70 ksi for thicker plates, with the minimum tensile strength dependent upon the plate thickness. The maximum thickness of Grade A, Class 3 plates is limited only by the capacity of the chemical composition and heat treatment to meet the specified mechanical property requirements.
1.3 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished in inch-pound units.
1.4 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.
1.5 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:A736/A736M −17
Standard Specification for
Pressure Vessel Plates, Low-Carbon Age-Hardening Nickel-
Copper-Chromium-Molybdenum-Columbium (Niobium) Alloy
1
Steel
This standard is issued under the fixed designationA736/A736M; 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* 2. Referenced Documents
2 3
1.1 This specification covers low-carbon age-hardening 2.1 ASTM Standards:
alloy steel plates for welded pressure vessels and piping A20/A20M SpecificationforGeneralRequirementsforSteel
components. The specification covers nickel-copper- Plates for Pressure Vessels
chromium-molybdenum-columbium (niobium) steel. A435/A435M Specification for Straight-Beam Ultrasonic
Examination of Steel Plates
1.2 Plates under this specification are available as follows:
A577/A577M Specification for Ultrasonic Angle-Beam Ex-
1.2.1 Available in Grade A, Class 3 only.
amination of Steel Plates
1.2.1.1 Quenched and precipitation heat treated with a
A578/A578M Specification for Straight-Beam Ultrasonic
minimum specified tensile strength of 85 ksi for thinner plates
Examination of Rolled Steel Plates for Special Applica-
and 75 and 70 ksi for thicker plates, with the minimum tensile
tions
strength dependent upon the plate thickness. The maximum
thickness of Grade A, Class 3 plates is limited only by the
3. General Requirements and Ordering Information
capacity of the chemical composition and heat treatment to
3.1 Material supplied to this material specification shall
meet the specified mechanical property requirements.
conform to Specification A20/A20M. These requirements out-
1.3 This specification is expressed in both inch-pound units
line the testing and retesting methods and procedures, permit-
and in SI units. However, unless the order specifies the
ted variations in dimensions, and mass, quality, and repair of
applicable “M” specification designation (SI units), the mate-
defects, marking, loading, and ordering information.
rial shall be furnished in inch-pound units.
3.2 In addition to the basic requirements of this
1.4 The values stated in either inch-pound units or SI units
specification,certainsupplementaryrequirementsareavailable
are to be regarded separately as standard. Within the text, the
when additional control, testing, or examination is required to
SI units are shown in brackets. The values stated in each
meet end use requirements. The purchaser is referred to the
system are not exact equivalents. Therefore, each system must
listed supplementary requirements in this specification and to
beusedindependently of the other. Combining valuesfromthe
the detailed requirements in Specification A20/A20M.
two systems may result in nonconformance with this specifi-
3.3 If the requirements of this specification are in conflict
cation.
withtherequirementsofSpecificationA20/A20M,therequire-
1.5 This international standard was developed in accor-
ments of this specification shall prevail.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4. Materials and Manufacture
Development of International Standards, Guides and Recom-
4.1 The steel shall be killed and shall conform to the fine
mendations issued by the World Trade Organization Technical
austenitic grain size requirement of Specification A20/A20M.
Barriers to Trade (TBT) Committee.
5. Heat Treatment
5.1 The plates shall be quenched in a liquid medium from a
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
temperature in the range from 1600 to 1700°F [870 to 930°C]
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee
A01.11 on Steel Plates for Boilers and Pressure Vessels.
Current edition approved Nov. 1, 2017. Published November 2017. Originally
3
approved in 1976. Last previous edition approved in 2012 as A736/A736M – 12. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
DOI: 10.1520/A0736_A0736M-17. 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-736 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
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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: A736/A736M − 12 A736/A736M − 17
Standard Specification for
Pressure Vessel Plates, Low-Carbon Age-Hardening Nickel-
Copper-Chromium-Molybdenum-Columbium (Niobium) Alloy
1
Steel
This standard is issued under the fixed designation A736/A736M; 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 This specification covers low-carbon age-hardening alloy steel plates for welded pressure vessels and piping components.
The specification covers nickel-copper-chromium-molybdenum-columbium (niobium) steel.
1.2 Plates under this specification are available as follows:
1.2.1 Available in Grade A, Class 3 only.
1.2.1.1 Quenched and precipitation heat treated with a minimum specified tensile strength of 85 ksi for thinner plates and 75
and 70 ksi for thicker plates, with the minimum tensile strength dependent upon the plate thickness. The maximum thickness of
Grade A, Class 3 plates is limited only by the capacity of the chemical composition and heat treatment to meet the specified
mechanical property requirements; however, current practice usually limits the maximum thickness to 8 in. [200 mm].require-
ments.
1.3 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable
“M” specification designation (SI units), the material shall be furnished in inch-pound units.
1.4 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.
1.5 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
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
3. General Requirements and Ordering Information
3.1 Material supplied to this material specification shall conform to Specification A20/A20M. These requirements outline the
testing and retesting methods and procedures, permitted 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 specification, certain supplementary requirements are available when additional
control, testing, or examination is required to meet end use requirements. The purchaser is referred to the listed supplementary
requirements in this specification and to the detailed requirements in Specification A20/A20M.
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 Nov. 1, 2012Nov. 1, 2017. Published January 2013November 2017. Originally approved in 1976. Last previous edition approved in 20072012
as A736/A736M – 03 (2007).A736/A736M – 12. DOI: 10.1520/A0736_A0736M-12.10.1520/A0736_A0736M-17.
2
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-736 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
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A736/A736M − 17
3.3 If the requirements of this specification are in conflict with t
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