ASTM A203/A203M-12
(Specification)Standard Specification for Pressure Vessel Plates, Alloy Steel, Nickel
Standard Specification for Pressure Vessel Plates, Alloy Steel, Nickel
ABSTRACT
This specification covers nickel-alloy steel plates intended primarily for welded pressure vessels. As a steel making practice, the steel shall be killed and shall conform to fine grain size requirements. The heat treatment requirements for all plates are presented, and all plates under Grades A, B, D, and E shall be normalized as required. The steel shall conform to the required chemical compositions. Two mechanical test requirements are presented that includes, tension test requirements and impact test requirements.
SCOPE
1.1 This specification covers nickel-alloy steel plates intended primarily for welded pressure vessels.
1.2 Plates under this specification are available with four strength levels and two nickel compositions as follows: GradeNominal Nickel
Content %Yield Strength, min, ksi [MPa]Tensile Strength, min, ksi [MPa] A2.2537 [255]65 [450] B2.2540 [275]70 [485] D3.5037 [255]65 [450] E3.5040 [275]70 [485] F3.50 2 in. [50 mm] and under 55 [380] 80 [550] cccc Over 2 in. [50 mm] 50 [345] 75 [515]
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] A6 [150] B6 [150] D4 [100] E4 [100] F4 [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: A203/A203M −12
Standard Specification for
1
Pressure Vessel Plates, Alloy Steel, Nickel
This standard is issued under the fixed designationA203/A203M; 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
3
2
2.1 ASTM Standards:
1.1 This specification covers nickel-alloy steel plates in-
A20/A20M SpecificationforGeneralRequirementsforSteel
tended primarily for welded pressure vessels.
Plates for Pressure Vessels
1.2 Plates under this specification are available with four
A435/A435M Specification for Straight-Beam Ultrasonic
strength levels and two nickel compositions as follows:
Examination of Steel Plates
Nominal Nickel Yield Strength, min, Tensile Strength,
A577/A577M Specification for Ultrasonic Angle-Beam Ex-
Grade
Content % ksi [MPa] min, ksi [MPa]
amination of Steel Plates
A 2.25 37 [255] 65 [450]
A578/A578M Specification for Straight-Beam Ultrasonic
B 2.25 40 [275] 70 [485]
D 3.50 37 [255] 65 [450]
Examination of Rolled Steel Plates for Special Applica-
E 3.50 40 [275] 70 [485]
tions
F 3.50
2 in. [50 mm] and under 55 [380] 80 [550] cccc
3. General Requirements and Ordering Information
Over 2 in. [50 mm] 50 [345] 75 [515]
3.1 Material supplied to this material specification shall
1.3 The maximum thickness of plates is limited only by the
conform to A20/A20M. These requirements outline the testing
capacity of the composition to meet the specified mechanical
and retesting methods and procedures, permitted variations in
property requirements. However, current practice normally
dimensions, and mass, quality and repair of defects, marking,
limits the maximum thickness of plates furnished under this
loading, and ordering information.
specification as follows:
3.2 In addition to the basic requirements of this
Grade Maximum Thickness, in. [mm]
A 6 [150] specification, certain supplementary requirements are available
B 6 [150]
when additional control, testing, or examination is required to
D 4 [100]
meet end use requirements. The purchaser is referred to the
E 4 [100]
F 4 [100] listed supplementary requirements in this specification and to
the detailed requirements in Specification A20/A20M.
1.4 The values stated in either inch-pound units or SI units
are to be regarded separately as standard. Within the text, the 3.3 If the requirements of this specification are in conflict
with the requirements of Specification A20/A20M, the require-
SI units are shown in brackets. The values stated in each
system are not exact equivalents. Therefore, each system must ments of this specification shall prevail.
be used independently of the other. Combining values from the
4. Materials and Manufacture
two systems may result in nonconformance with this specifi-
4.1 Steelmaking Practice—The steel shall be killed and
cation.
shall conform to the fine grain size requirement of Specifica-
tion A20/A20M.
1
5. Heat Treatment
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
5.1 All plates shall be thermally treated as follows:
A01.11 on Steel Plates for Boilers and Pressure Vessels.
Current edition approved May 1, 2012. Published June 2012. Originally
3
approved in 1937. Last previous edition approved in 2003 as A203/ For referenced ASTM standards, visit the ASTM website, www.astm.org, or
´1
A203M – 97 (2003) . DOI: 10.1520/A0203_A0203M-12. 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-203/SA-203M 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
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A203/A203M − 12
5.1.1 All plates of Grades A, B, D, and E shall be normal- 7.1.1 For plates that have been heat treated in accordance
3
ized except as permitted by 5.1.1.1. with5.1.1.1or5.1.2andhaveanominalthicknessof ⁄4 in.[20
1
5.1.1.1 IfapprovedbythepurchaserforGradesA,B,D,and
mm] and under, the 1 ⁄2-in. (40-mm) wide rectangular speci-
E, cooling rates faster than air cooling are permissible for
men may be used for the tension test, and the elongation may
improvement of the toughness, provided the plates are subse-
be determined in a 2-in. [50-mm
...
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.
´1
Designation:A203/A203M–97(Reapproved2007) Designation: A203/A203M – 12
Standard Specification for
1
Pressure Vessel Plates, Alloy Steel, Nickel
This standard is issued under the fixed designationA203/A203M; 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
´ NOTE—Editorial corrections were made to the Supplementary Requirements section in April 2008.
1. Scope*
2
1.1 This specification covers nickel-alloy steel plates intended primarily for welded pressure vessels.
1.2 Plates under this specification are available with four strength levels and two nickel compositions as follows:
Nominal Nickel Yield Strength, min, Tensile Strength,
Grade
Content % ksi [MPa] min, ksi [MPa]
A 2.25 37 [255] 65 [450]
B 2.25 40 [275] 70 [485]
D 3.50 37 [255] 65 [450]
E 3.50 40 [275] 70 [485]
F 3.50
2 in. [50 mm] and under 55 [380] 80 [550] cccc
Over 2 in. [50 mm] 50 [345] 75 [515]
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]
D 4 [100]
E 4 [100]
F 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
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, permissible variations in dimensions and mass, quality and repair of imperfections,
marking, loading, etc.
3.2Specification . These requirements outline the testing and retesting methods and procedures, permitted variations in
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.11
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 A203/A203M–97(2003). DOI:
10.1520/A0203_A0203M-97R07E01.
´1
Current edition approved May 1, 2012. Published June 2012. Originally approved in 1937. Last previous edition approved in 2003 asA203/A203M – 97 (2003) . DOI:
10.1520/A0203_A0203M-12.
2
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-203/SA-203M in Section II of that Code.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM Standards
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.
1
---------------------- Page: 1 ----------------------
A203/A203M – 12
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
requirementsinthisspecificationandtothedetailedrequirementsinSpecificationA20/A20Malsoestablishestherulesforthebasis
of purchase that should be complied with when purchasing material to this specification.
3.3In additi
...
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