ASTM A204/A204M-03(2007)
(Specification)Standard Specification for Pressure Vessel Plates, Alloy Steel, Molybdenum
Standard Specification for Pressure Vessel Plates, Alloy Steel, Molybdenum
ABSTRACT
This specification covers molybdenum alloy steel plates, intended particularly for welded boilers and other pressure vessels. Plates under this specification are available in three grades having different strength levels: Grade A; Grade B; and Grade C. The steel shall be killed. The steel shall conform to the chemical requirements specified. Tension tests on plates shall conform to the requirements specified.
SCOPE
1.1 This specification covers molybdenum-alloy steel plates, intended particularly for welded boilers and other pressure vessels.
1.2 Plates under this specification are available in three grades having different strength levels as follows: Grade Tensile Strength, ksi [MPa] A 65–85 [450–585] B 70–90 [485–620] C 75–95 [515–655]
1.3 The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical property requirements; however, current practice normally limits the maximum thickness of plates furnished under this specification as follows: Grade Maximum Thickness, in. [mm] A 6 [150] B 6 [150] C 4 [100]
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: A204/A204M – 03 (Reapproved 2007)
Standard Specification for
Pressure Vessel Plates, Alloy Steel, Molybdenum
This standard is issued under the fixed designationA204/A204M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* 2. Referenced Documents
2 3
1.1 This specification covers molybdenum-alloy steel 2.1 ASTM Standards:
plates, intended particularly for welded boilers and other A20/A20M Specification for General Requirements for
pressure vessels. Steel Plates for Pressure Vessels
1.2 Plates under this specification are available in three A435/A435M Specification for Straight-Beam Ultrasonic
grades having different strength levels as follows: Examination of Steel Plates
A577/A577M Specification for UltrasonicAngle-Beam Ex-
Grade Tensile Strength, ksi [MPa]
A 65–85 [450–585]
amination of Steel Plates
B 70–90 [485–620]
A578/A578M Specification for Straight-Beam Ultrasonic
C 75–95 [515–655]
Examination of Rolled Steel Plates for Special Applica-
1.3 The maximum thickness of plates is limited only by the
tions
capacity of the composition to meet the specified mechanical
property requirements; however, current practice normally 3. General Requirements and Ordering Information
limits the maximum thickness of plates furnished under this
3.1 Plates supplied to this product specification shall con-
specification as follows:
form to Specification A20/A20M, which outlines the testing
Grade Maximum Thickness, in. [mm]
and retesting methods and procedures, permissible variations
A 6 [150]
in dimensions and mass, quality and repair of defects, marking,
B 6 [150]
C 4 [100] loading, etc.
3.2 Specification A20/A20M also establishes the rules for
1.4 The values stated in either inch-pound units or SI units
ordering information that should be complied with when
are to be regarded separately as standard. Within the text, the
purchasing plates to this specification.
SI units are shown in brackets. The values stated in each
3.3 In addition to the basic requirements of this specifica-
system are not exact equivalents; therefore, each system must
tion, certain supplementary requirements are available where
be used independently of the other. Combining values from the
additional control, testing, or examination is required to meet
two systems may result in nonconformance with this specifi-
end use requirements.
cation.
3.4 The purchaser is referred to the listed supplementary
requirements in this specification and to the detailed require-
This specification is under the jurisdiction of ASTM Committee A01 on Steel, ments in Specification A20/A20M.
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, 2007. Published March 2008. Originally
approved in 1937. Last previous edition approved in 2003 as A204/A 204M – 03. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
DOI: 10.1520/A0204_A0204M-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-204/SA 204M in Section II of that Code. the ASTM website.
*ASummary 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.
A204/A204M – 03 (2007)
TABLE 1 Chemical Requirements
Composition, %
Element
Grade A Grade B Grade C
A
Carbon, max:
Up to 1 in. [25 mm] 0.18 0.20 0.23
incl, in thickness
Over 1 in. to 2 in. [50 mm] 0.21 0.23 0.26
incl, in thickness
Over 2 in. to 4 in. [100 mm] 0.23 0.25 0.28
incl, in thickness
Over 4 in. [100 mm] 0.25 0.27 0.28
in thickness
Manganese, max:
Heat analysis 0.90 0.90 0.90
Product analysis 0.98 0.98 0.98
A
Phosphorous, max 0.035 0.035 0.035
A
Sulfur, max 0.035 0.035 0.035
Silicon:
Heat analysis 0.15–0.40 0.15–0.40 0.15–0.40
Product analysis 0.13–0.45 0.13–0.45 0.13–0.45
Molybdenum:
Heat analysis 0.45–0.60 0.45–0.60 0.45–0.60
Product analysis 0.41–0.64 0.41–0.64 0.41–0.64
A
Applies to both heat and product analyses.
TABLE 2 Tensile Re
...
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:A 204/A 204M–93 (Reapproved 1999) Designation: A 204/
A 204M – 03 (Reapproved 2007)
Standard Specification for
Pressure Vessel Plates, Alloy Steel, Molybdenum
This standard is issued under the fixed designationA 204/A 204M; 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*
1.1 This specification covers molybdenum-alloy steel plates, intended particularly for welded boilers and other pressure
vessels.
1.2Material1.2 Plates under this specification isare available in three grades having different strength levels as follows:
Grade Tensile Strength, ksi [MPa]
A 65–85 [450–585]
Grade
B 70–90 [485–620]
C 75–95 [515–655]
1.3 The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical
property requirements; however, current practice normally limits the maximum thickness of plates furnished under this
specification as follows:
Grade Maximum Thickness, in. [mm]
A 6 [150]
Grade
B 6 [150]
C 4 [100]
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.
2. Referenced Documents
2.1 ASTM Standards:
A 20/A 20M Specification for General Requirements for Steel Plates for Pressure Vessels
A 435/A 435M Specification for Straight-Beam Ultrasonic Examination of Steel Plates
A 577/A 577M Specification for Ultrasonic Angle-Beam Examination of Steel Plates
A 578/A 578M Specification for Straight-Beam Ultrasonic Examination of Plain and Clad Steel Plates for SpecialApplications
Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications
3. General Requirements and Ordering Information
3.1Material supplied to this material specification shall conform to Specification A20/A20M. These requirements outline the
testing and retesting methods and procedures, permissible variations in dimensions and mass, quality and repair of defects,
marking, loading, etc.
3.2Specification A20/A20M also establishes the rules for the ordering information that should be complied with when
purchasing material to this specification.
3.3In 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. These include:
3.3.1Vacuum treatment,
3.3.2Additional or special tension testing,
ThisspecificationisunderthejurisdictionofASTMCommitteeA-1A01onSteel,StainlessSteel,SteelandRelatedAlloysandisthedirectresponsibilityofSubcommittee
A01.11 on Steel Plates for Boilers and Pressure Vessels.
Current edition approved June 15, 1993.Nov. 1, 2007. Published August 1993.March 2008. Originally published as A204–37 T. approved in 1937. Last previous edition
approved in 2003 as A204/A 204M – 903.
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-204/SA 204M in Section II of that Code.
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM Standards
, Vol. 01.04. volume information, refer to the standard’s Document Summary page on the ASTM website.
*ASummary 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.
A 204/A 204M – 03 (2007)
3.3.3Impact testing, and
3.3.4Nondestructive examination.
3.4The purchaser is referred to the listed supplementary requirements in this specification and to the detailed requirements in
Specification A20/A20M.
3.5If the requirements of this specification are in conflict with the requirements of Specification A20/A20M, the requirements
of this specification shall prevail. General Requirements and Ordering Information
3.1 Plates supplied to this product specification shall conform to Specification A 20/A 20M, which outlines the testing and
retesting methods and procedures, permissible variations in dimensions and mass, quality and repair of defects, marking, loading,
etc.
3.2 SpecificationA 20/A 20M 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 A 20/A 20M.
3.5 Coils are excluded from qualification to this specification until they are processed into finished plates. Plates produced from
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 c
...
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:A 204/A 204M–03 Designation: A204/A204M – 03 (Reapproved 2007)
Standard Specification for
Pressure Vessel Plates, Alloy Steel, Molybdenum
This standard is issued under the fixed designationA204/A204M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1 This specification covers molybdenum-alloy steel plates, intended particularly for welded boilers and other pressure
vessels.
1.2 Plates under this specification are available in three grades having different strength levels as follows:
Grade Tensile Strength, ksi [MPa]
A 65–85 [450–585]
Grade
B 70–90 [485–620]
C 75–95 [515–655]
1.3 The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical
property requirements; however, current practice normally limits the maximum thickness of plates furnished under this
specification as follows:
Grade Maximum Thickness, in. [mm]
A 6 [150]
Grade
B 6 [150]
C 4 [100]
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.
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel,Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.11 on Steel Plates for Boilers and Pressure Vessels.
Current edition approved Sept. 10, 2003. Published October 2003. Originally approved in 1937. Last previous edition approved in 1999 as A204/A 204M–93 (1999).
Current edition approved Nov. 1, 2007. Published March 2008. Originally approved in 1937. Last previous edition approved in 2003 as A204/A 204M – 03. DOI:
10.1520/A0204_A0204M-03R07.
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-204/SA 204M in Section II of that Code.
*ASummary 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.
A204/A204M – 03 (2007)
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 Specification A 20A20/A20M/A 20M,, which outlines the
testing and retesting methods and procedures, permissible variations in dimensions and mass, quality and repair of defects,
marking, loading, etc.
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 A 20A20/A20M/A 20M. .
3.5 Coils are excluded from qualification to this specification until they are processed into finished plates. Plates produced from
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 Specification A 20A20/A20M/A 20M,, the
requirements of this specification shall prevail.
4. Materials and Manufacture
4.1 Steelmaking Practice—The steel shall be killed.
5. Heat Treatment
5.1 Plates 1 ⁄2 in. [40 mm] and under in thickness are normally supplied in the as-rolled condition. The plates may be ordered
normalized or stress relieved or both.
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM Standards
, Vol. 01.04. volume information, refer to the standard’s Document Summary page on the ASTM website.
TABLE 1 Chemical Requirements
Composition, %
Element
Grade A Grade B Grade C
A
Carbon, max:
Up to 1 in. [25 mm] 0
...
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