ASTM A736/A736M-03(2007)
(Specification)Standard Specification for Pressure Vessel Plates, Low-Carbon Age-Hardening Nickel-Copper-Chromium-Molybdenum-Columbium and Nickel-Copper-Manganese-Molybdenum-Columbium Alloy Steel
Standard Specification for Pressure Vessel Plates, Low-Carbon Age-Hardening Nickel-Copper-Chromium-Molybdenum-Columbium and Nickel-Copper-Manganese-Molybdenum-Columbium 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 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 steels.
1.2 Plates under this specification are available in three classes, as follows:
1.2.1 Class 1—As-rolled and precipitation heat treated. Available in thicknesses of ¾ in. [20 mm] and under. Grade A, Class 1 has a minimum specified tensile strength of 90 ksi. Grade C, Class 1 has a minimum specified tensile strength of 100 ksi.
1.2.2 Class 2—Normalized and precipitation heat treated.
1.2.2.1 Available in Grade A only. Grade A has minimum specified tensile strength of 72 ksi for thinner plates and 65 and 60 ksi for thicker plates, with the minimum tensile strength dependent upon the plate thickness. The maximum thickness of Grade A, Class 2 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].
1.2.3 Class 3—Quenched and precipitation heat treated.
1.2.3.1 Available as Grade A 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].
1.2.3.2 Available as Grade C with a specified minimum tensile strength of 95 ksi for plates ¾in. [20 mm] and under in thickness and 90 ksi for plates over ¾ in. in thickness. The maximum thickness of Grade C, Class 3, plates is 2 in. [50 mm].
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.
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Designation: A736/A736M −03(Reapproved 2007)
Standard Specification for
Pressure Vessel Plates, Low-Carbon Age-Hardening Nickel-
Copper-Chromium-Molybdenum-Columbium and Nickel-
Copper-Manganese-Molybdenum-Columbium Alloy 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 thickness and 90 ksi for plates over ⁄4 in. in thickness. The
2 maximum thickness of Grade C, Class 3, plates is 2 in. [50
1.1 This specification covers two grades of low-carbon
mm].
age-hardening alloy steel plates for welded pressure vessels
and piping components. The two grades are nickel-copper- 1.3 This specification is expressed in both inch-pound units
chromium-molybdenum-columbium and nickel-copper- and in SI units. However, unless the order specifies the
manganese-molybdenum-columbium steels. applicable “M” specification designation (SI units), the mate-
rial shall be furnished in inch-pound units.
1.2 Plates under this specification are available in three
classes, as follows: 1.4 The values stated in either inch-pound units or SI units
1.2.1 Class 1—As-rolled and precipitation heat treated. are to be regarded separately as standard. Within the text, the
Available in thicknesses of ⁄4 in. [20 mm] and under. GradeA, SI units are shown in brackets. The values stated in each
Class 1 has a minimum specified tensile strength of 90 ksi. system are not exact equivalents. Therefore, each system must
Grade C, Class 1 has a minimum specified tensile strength of beusedindependentlyoftheother.Combiningvaluesfromthe
100 ksi. two systems may result in nonconformance with this specifi-
1.2.2 Class 2—Normalized and precipitation heat treated. cation.
1.2.2.1 Available in Grade A only. Grade A has minimum
2. Referenced Documents
specifiedtensilestrengthof72ksiforthinnerplatesand65and
2.1 ASTM Standards:
60 ksi for thicker plates, with the minimum tensile strength
dependentupontheplatethickness.Themaximumthicknessof A20/A20MSpecificationforGeneralRequirementsforSteel
Plates for Pressure Vessels
GradeA,Class2islimitedonlybythecapacityofthechemical
composition and heat treatment to meet the specified mechani- A435/A435MSpecification for Straight-Beam Ultrasonic
cal property requirements; however, current practice usually Examination of Steel Plates
limits the maximum thickness to 8 in. [200 mm]. A577/A577MSpecification for Ultrasonic Angle-Beam Ex-
1.2.3 Class 3—Quenched and precipitation heat treated. amination of Steel Plates
1.2.3.1 Available as Grade A with a minimum specified A578/A578MSpecification for Straight-Beam Ultrasonic
tensile strength of 85 ksi for thinner plates and 75 and 70 ksi Examination of Rolled Steel Plates for Special Applica-
forthickerplates,withtheminimumtensilestrengthdependent tions
upon the plate thickness. The maximum thickness of GradeA,
3. General Requirements and Ordering Information
Class 3 plates is limited only by the capacity of the chemical
composition and heat treatment to meet the specified mechani- 3.1 Plates supplied to this product specification shall con-
form to the requirements of Specification A20/A20M, which
cal property requirements; however, current practice usually
limits the maximum thickness to 8 in. [200 mm]. outlines the testing and retesting methods and procedures,
permissible variations in dimensions and mass, quality and
1.2.3.2 Available as Grade C with a specified minimum
tensilestrengthof95ksiforplates ⁄4in.[20mm]andunderin repair of defects, marking, loading, and so forth.
3.2 Specification A20/A20M also establishes the rules for
This specification is under the jurisdiction ofASTM Committee A01 on Steel, ordering information that should be complied with when
Stainless Steel and Related Alloysand is the direct responsibility of Subcommittee
purchasing plates to this specification.
A01.11 on Steel Plates for Boilers and Pressure Vessels.
Current edition approved Nov. 1, 2007. Published March 2008. Originally
approved in 1976. Last previous edition approved in 2003 as A736/A736M–03. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
DOI: 10.1520/A0736_A0736M-03R07. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A736/A736M − 03 (2007)
3.3 In addition to the basic requirements of this specifica- treatthetestcouponsunderconditionsitconsidersappropriate.
tion, certain supplementary requirements are available where The manufacturer or processor shall inform the purchaser of
additional control, testing, or examination is required to meet theprocedurefollowedinthermallytreatingthetestcouponsat
end use requirements. the mill.
3.4 The purchaser is referred to the listed supplementary
6. Chemical Composition
requirements in this specification and to the detailed require-
6.1 The steel shall conform to the requirements as to
ments in Specification A20/A20M.
chemical composition given in Table 1.
3.5 Coils are excluded from qualification to this specifica-
7. Mechanical Properties
tion until they are processed into finished plates. Plates
7.1 Tension Test:
produced from coil means plates that have been cut to
7.1.1 The plates, as represented by the test specimens, shall
individuallengthsfromcoil.Theprocessordirectlycontrols,or
conform to the requirements given in Table 2.
is responsible for, the operations involved in the processing of
7.1.2 For nominal plate thicknesses of ⁄4 in. [20 mm] and
coils into finished plates. Such operations include decoiling,
leveling, cutting to length, testing, inspection, conditioning, under,the1 ⁄2-in.[40-mm]widerectangulartestspecimenmay
be used for the tension test, and the elongation may be
heat treatment (if applicable), packaging, marking, loading for
shipment, and certification. determined in a 2-in. [50-mm] gage length that incl
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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.
e1
Designation:A 736/A 736M–88(Reapproved 1994) Designation: A 736/A 736M – 03
(Reapproved 2007)
Standard Specification for
Pressure Vessel Plates, Low-Carbon Age-Hardening Nickel-
Copper-Chromium-Molybdenum-Columbium and Nickel-
Copper-Manganese-Molybdenum-Columbium Alloy Steel
ThisstandardisissuedunderthefixeddesignationA736/A736M;thenumberimmediatelyfollowingthedesignationindicatestheyear
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 (e) indicates an editorial change since the last revision or reapproval. e NOTE—Editorial corrections were made
to this standard in August 1999.
1. Scope
1.1 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 steels.
1.2 Plates under this specification are available in three Classes,classes, as follows:
1.2.1 Class 1—As-rolled and precipitation heat treated. Available in thicknesses of ⁄4 in. [20 mm] and under. Grade A, Class
1 has a minimum specified tensile strength of 90 ksi. Grade C, Class 1 has a minimum specified tensile strength of 100 ksi.
1.2.2 Class 2—Normalized and precipitation heat treated.
1.2.2.1 Available in Grade A only. Grade A has minimum specified tensile strength of 72 ksi for thinner plates and 65 and 60
ksi for thicker plates, with the minimum tensile strength dependent upon the plate thickness. The maximum thickness of Grade
A,Class2islimitedonlybythecapacityofthechemicalcompositionandheattreatmenttomeetthespecifiedmechanicalproperty
requirements; however, current practice usually limits the maximum thickness to 8 in. [200 mm].
1.2.3 Class 3—Quenched and precipitation heat treated.
1.2.3.1 AvailableasGradeAwithaminimumspecifiedtensilestrengthof85ksiforthinnerplatesand75and70ksiforthicker
plates, with the minimum tensile strength dependent upon the plate thickness. The maximum thickness of GradeA, 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].
1.2.3.2 AvailableasGradeCwithaspecifiedminimumtensilestrengthof95ksiforplates ⁄4in.[20mm]andunderinthickness
and 90 ksi for plates over ⁄4 in. in thickness. The maximum thickness of Grade C, Class 3, plates is 2 in. [50 mm].
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 Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunits
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.
2. Referenced Documents
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 Plain and Clad Rolled Steel Plates for Special
Applications
This specification is under the jurisdiction of ASTM Committee A-1A01 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 Jan. 29, 1988.Nov. 1, 2007. Published May 1988.March 2008. Originally published as A736–76.approved in 1976. Last previous edition
A736/A736M–87. approved in 2003 as A736/A736M–03.
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-736 in Section II of that Code.
Annual Book of ASTM Standards, Vol 01.04.
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book ofASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A 736/A 736M – 03 (2007)
3. General Requirements and Ordering Information
3.1Material supplied to this specification shall conform to the requirements of Specification A20/A20M. These requirements
outline the testing and retesting methods and procedures, permissible variations in dimensions and weight, quality, repair of
defects, marking, loading, etc.
3.2SpecificationA20/A20M also establishes the rules for compliance to the basis of purchase when purchasing material to this
specification.
3.3Certain supplementary requirements considered suitable for use with this specification are listed at the end of this
specification. These include some of the standardized supplementary requirements listed in Specification A20/A20M as well as
additional ones unique to this specification. General Requirements and Ordering Information
3.1 Plates supplied to this product specification shall conform to the requirements of SpecificationA20/A20M, which outlines
the testing and retesting methods and procedures, permissible variations in dimensions and mass, quality and repair of defects,
marking, loading, and so forth.
3.2 SpecificationA20/A20Malsoestablishestherulesfororderinginformationthatshouldbecompliedwithwhenpurchasing
plates to this specification.
3.3 Inadditiontothebasicrequirementsofthisspecification,certainsupplementaryrequirementsareavailablewhereadditional
control, testing, or examination is required to meet end use requirements.
3.4 The purchaser is referred to the listed supplementary requirements in this specification and to the detailed requirements in
Specification A20/A20M.
3.5 Coilsareexcludedfromqualificationtothisspecificationuntiltheyareprocessedintofinishedplates.Platesproducedfrom
coil means plates that have been cut to individual lengths from coil. The processor directly controls, or is responsible for, the
operations involved in the processing of coils into finished plates. Such operations include decoiling, leveling, cutting to length,
testing, inspection, conditioning, heat treatment (if applicable), packaging, marking, loading for shipment, and certification.
NOTE 1—For plates produced from coil and furnished without heat treatment or with stress relieving only, three test results are reported for each
qualifying coil. Additional requirements regarding plates from coil are described in Specification A20/A20M.
3.6 If the requirements of this specification are in conflict with the requirements of SpecificationA20/A20M, the requirements
of this specification shall prevail.
4. Materials and Manufacture
4.1 The steel shall be killed and shall conform to the fine austenitic grain size requirement of Specification A20A20/A20M/
A20M. .
5. Heat Treatment
5.1 Class 1—The materialplates shall be precipitation heat treated at a temperature in the ran
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:A 736/A 736M–03 Designation: A736/A736M – 03 (Reapproved 2007)
Standard Specification for
Pressure Vessel Plates, Low-Carbon Age-Hardening Nickel-
Copper-Chromium-Molybdenum-Columbium and Nickel-
Copper-Manganese-Molybdenum-Columbium Alloy 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 *
1.1 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 steels.
1.2 Plates under this specification are available in three Classes,classes, as follows:
1.2.1 Class 1—As-rolled and precipitation heat treated. Available in thicknesses of ⁄4 in. [20 mm] and under. Grade A, Class
1 has a minimum specified tensile strength of 90 ksi. Grade C, Class 1 has a minimum specified tensile strength of 100 ksi.
1.2.2 Class 2—Normalized and precipitation heat treated.
1.2.2.1 Available in Grade A only. Grade A has minimum specified tensile strength of 72 ksi for thinner plates and 65 and 60
ksi for thicker plates, with the minimum tensile strength dependent upon the plate thickness. The maximum thickness of Grade
A,Class2islimitedonlybythecapacityofthechemicalcompositionandheattreatmenttomeetthespecifiedmechanicalproperty
requirements; however, current practice usually limits the maximum thickness to 8 in. [200 mm].
1.2.3 Class 3—Quenched and precipitation heat treated.
1.2.3.1 AvailableasGradeAwithaminimumspecifiedtensilestrengthof85ksiforthinnerplatesand75and70ksiforthicker
plates, with the minimum tensile strength dependent upon the plate thickness. The maximum thickness of GradeA, 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].
1.2.3.2 AvailableasGradeCwithaspecifiedminimumtensilestrengthof95ksiforplates ⁄4in.[20mm]andunderinthickness
and 90 ksi for plates over ⁄4 in. in thickness. The maximum thickness of Grade C, Class 3, plates is 2 in. [50 mm].
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 Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunits
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.
2. Referenced Documents
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 Plain and Clad Rolled Steel Plates for Special
Applications
3. General Requirements and Ordering Information
3.1 Plates supplied to this product specification shall conform to the requirements of Specification A 20A20/A20M/A 20M,,
ThisspecificationisunderthejurisdictionofASTMCommitteeA01onSteel,StainlessSteelandRelatedAlloysandisthedirectresponsibilityofSubcommitteeA01.11
on Steel Plates for Boilers and Pressure Vessels.
Current edition approved Sept. 10, 2003. Published October 2003. Originally approved in 1976. Last previous edition approved in 2000 as A 736/A 736M–88 (2000).
Current edition approved Nov. 1, 2007. Published March 2008. Originally approved in 1976. Last previous edition approved in 2003 as A736/A736M–03. DOI:
10.1520/A0736_A0736M-03R07.
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-736 in Section II of that Code.
Annual Book of ASTM Standards, Vol 01.04.
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book ofASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A736/A736M – 03 (2007)
whichoutlinesthetestingandretestingmethodsandprocedures,permissiblevariationsindimensionsandmass,qualityandrepair
of defects, marking, loading, and so forth.
3.2 SpecificationA20A20/A20M/A20M also establishes the rules for ordering information that should be complied with when
purchasing plates to this specification.
3.3 Inadditiontothebasicrequirementsofthisspecification,certainsupplementaryrequirementsareavailablewhereadditional
control, testing, or examination is required to meet end use requirements.
3.4 The purchaser is referred to the listed supplementary requirements in this specification and to the detailed requirements in
Specification A20/A20M.
3.5 Coilsareexcludedfromqualificationtothisspecificationuntiltheyareprocessedintofinishedplates.Platesproducedfrom
coil means plates that have been cut to individual lengths from coil. The processor directly controls, or is responsible for, the
operations involved in the processing of coils into finished plates. Such operations include decoiling, leveling, cutting to length,
testing, inspection, conditioning, heat treatment (if applicable), packaging, marking, loading for shipment, and certification.
NOTE 1—For plates produced from coil and furnished without heat treatment or with stress relieving only, three test results are reported for each
qualifying coil. Additional requirements regarding plates from coil are described in Specification A20/A20M.
3.6 If the requirements of this specification are in conflict with the requirements of SpecificationA20/A20M, the requirements
of this specification shall prevail.
4. Materials and Manufacture
4.1 The steel shall be killed and shall conform to the fine austenitic grain size requirement of SpecificationA20A20/A20M/A
20M.
5. Heat Treatment
5.1 Class 1—The plates shall be precipitation heat treated at a temperature in the range from 1000 to 1300°F [540 to 705°C]
for a time to be determined by the manufacturer or processor.
5.2 Class 2—The plates shall be normalized at a temperature in the range from 1600 to 1700°F [870 to 930°C] and then
precipitation heat treated at a temperature in the range from 1000 to 1300°F [540 to 705°C]
...
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