ASTM A645/A645M-10
(Specification)Standard Specification for Pressure Vessel Plates, Five Percent Nickel Alloy Steel, Specially Heat Treated
Standard Specification for Pressure Vessel Plates, Five Percent Nickel Alloy Steel, Specially Heat Treated
ABSTRACT
This specification covers specially heat treated 5% and 5 1/2% nickel alloy steel plates intended primarily for welded pressure vessels for service at low or cryogenic temperatures. Plates are classified as Grade A and Grade B. The steel shall be killed and shall conform to the fine austenitic grain size requirements specified. Plates shall be heat treated in accordance with the required specifications. The steel shall conform to the chemical requirements specified. Tensions tests and impacts tests shall be made to meet the mechanical requirements specified.
SCOPE
1.1 This specification covers specially heat treated 5 % and 5 ½ % nickel alloy steel plates intended primarily for welded pressure vessels for service at low or cryogenic temperatures.
1.2 The maximum thickness of plates which can be supplied under this specification is limited only by the capacity of the material to meet the specified requirements.
1.3 This material is susceptible to magnetization. Use of magnets in handling after heat treatment should be avoided if residual magnetism would be detrimental to subsequent fabrication or service.
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 the specification.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Relations
Buy Standard
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:A645/A645M −10
StandardSpecification for
1
Pressure Vessel Plates, 5% and 5 ⁄2 % Nickel Alloy Steels,
1
Specially Heat Treated
This standard is issued under the fixed designationA645/A645M; 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* A577/A577M Specification for Ultrasonic Angle-Beam Ex-
2 amination of Steel Plates
1.1 This specification covers specially heat treated 5 % and
A578/A578M Specification for Straight-Beam Ultrasonic
1
5 ⁄2 % nickel alloy steel plates intended primarily for welded
Examination of Rolled Steel Plates for Special Applica-
pressure vessels for service at low or cryogenic temperatures.
tions
1.2 Themaximumthicknessofplateswhichcanbesupplied
under this specification is limited only by the capacity of the
3. General Requirements and Ordering Information
material to meet the specified requirements.
3.1 Plates supplied to this material specification shall con-
1.3 This material is susceptible to magnetization. Use of
form to Specification A20/A20M. These requirements outline
magnets in handling after heat treatment should be avoided if
the testing and retesting methods and procedures, permitted
residual magnetism would be detrimental to subsequent fabri-
variations in dimensions and mass, quality and repair of
cation or service.
defects, marking, loading, and ordering information.
1.4 The values stated in either inch-pound units or SI units
3.2 In addition to the basic requirements of this
are to be regarded separately as standard. Within the text, the
specification, certain supplementary requirements are available
SI units are shown in brackets. The values stated in each
when additional control, testing, or examination is required to
system are not exact equivalents; therefore, each system must
meet end use requirements. The purchaser is referred to the
be used independently of the other. Combining values from the
listed supplementary requirements in this specification and to
two systems may result in nonconformance with the specifi-
the detailed requirements in Specification A20/A20M.
cation.
3.3 If the requirements of this specification are in conflict
1.5 This standard does not purport to address all of the
with the requirements of Specification A20/A20M, the require-
safety concerns, if any, associated with its use. It is the
ments of this specification shall prevail.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Materials and Manufacture
bility of regulatory limitations prior to use.
4.1 Steelmaking Practice—The steel shall be killed and
shall conform to the fine austenitic grain size requirements of
2. Referenced Documents
Specification A20/A20M.
3
2.1 ASTM Standards:
A20/A20M SpecificationforGeneralRequirementsforSteel
5. Heat Treatment
Plates for Pressure Vessels
5.1 Grade A plates shall be heat treated in accordance with
A435/A435M Specification for Straight-Beam Ultrasonic
5.2.GradeBplatesshallbeheattreatedinaccordancewith5.3.
Examination of Steel Plates
Shell plates and other parts, including heads and reinforcing
pads that are heated above 1125°F [605°C] for forming, shall
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
be heat treated after forming,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.11 on Steel Plates for Boilers and Pressure Vessels.
5.2 Grade A, Procedure and Sequence:
Current edition approved Oct. 1, 2010. Published November 2010. Originally
5.2.1 Hardening—The plates shall be heated to a tempera-
approved in 1971. Last previous edition approved in 2005 as A645/A645M – 05.
turewithintherangefrom1575to1675°F[855to915°C],held
DOI: 10.1520/A0645_A0645M-10.
2
within that temperature range for a minimum of 1 h/in. [2.4
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
cation SA-645 in Section II of that Code.
min/mm]ofthickness,butinnocaselessthan15min,andthen
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
water-quenched to below 300°F [150°C].
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.2.2 Intermediate Heat Treatment—The plates shall be
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. reheated to a temperature within the range from 1275 to
*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 -------------
...
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:A645/A645M–05 Designation: A645/A645M – 10
Standard Specification for
1
Pressure Vessel Plates, 5 % and 5 ⁄2 % Nickel Alloy Steels,
1
Specially Heat Treated
This standard is issued under the fixed designationA645/A645M; 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 specially heat treated 5 % and 5 ⁄2 % nickel alloy steel plates intended primarily for welded
pressure vessels for service at low or cryogenic temperatures.
1.2 The maximum thickness of plates which can be supplied under this specification is limited only by the capacity of the
material to meet the specified requirements.
1.3 This material is susceptible to magnetization. Use of magnets in handling after heat treatment should be avoided if residual
magnetism would be detrimental to subsequent fabrication or service.
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 the specification.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
3
2.1 ASTM Standards:
A20/A20M Specification for General Requirements for Steel Plates for Pressure Vessels Specification for General Require-
ments 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 Plates supplied to this productmaterial specification shall conform to Specification A20/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.
3.2Specification . 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/A20Malso establishes the rules for the
ordering information that should be complied with when purchasing plates 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.
3.4The purchaser is referred to the listed supplementary requirements in this specification and to the detailed supplementary
requirements in Specification A20/A20M.
3.5If3.3 If the requirements of this specification are in conflict with the requirements of Specification A20/A20M, the
requirements of this specification shall prevail.
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 MayOct. 1, 2005.2010. Published May 2005.November 2010. Originally approved in 1971. Last previous edition approved in 19992005 as
A645/A645M–99a.A645/A645M – 05. DOI: 10.1520/A0645_A0645M-105.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-645 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.
*A Sum
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.