ASTM A540/A540M-10
(Specification)Standard Specification for Alloy-Steel Bolting for Special Applications
Standard Specification for Alloy-Steel Bolting for Special Applications
ABSTRACT
This specification covers a group of common requirements that shall apply to steel flanges, forged fittings, valves, and parts for piping applications under any of the following individual product specifications. This specification covers regular and special-quality alloy steel bolting materials which may be used for nuclear and other special applications. Bolting materials as used in this specification cover rolled or forged bars, rotary pierced or extruded seamless tubes, bored bars, or forged hollows from forged or rolled bar segments to be manufactured into bolts, studs, washers, and nuts. The steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel, molybdenum, vanadium. Material which is ordered in the liquid-quenched and tempered condition shall be uniformly reheated from a temperature below the cooling transformation range to the proper austenitizing temperature. It shall be quenched in a liquid medium under substantially uniform conditions and then uniformly reheated for tempering. Tensile test, hardness, and impact test shall be measured to conform to the required mechanical properties.
SCOPE
1.1 This specification covers regular and special-quality alloy steel bolting that may be used for nuclear and other special applications. See Specification for the definition of bolting.
1.2 The following referenced common requirements are indispensable for application of this specification: Specification .
1.3 Supplementary requirements of an optional nature are provided for use at the option of the purchaser. These supplementary requirements only apply when specified individually by the purchaser in the purchase order or contract.
1.4 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable “M” specification designation (SI units), inch-pound units shall apply.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
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Designation: A540/A540M – 10
Standard Specification for
1
Alloy-Steel Bolting for Special Applications
This standard is issued under the fixed designationA540/A540M; 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 (ϵ) indicates an editorial change since the last revision or reapproval.
1. Scope* genic to the Creep Range
2 E45 Test Methods for Determining the Inclusion Content of
1.1 This specification covers regular and special-quality
Steel
alloy steel bolting that may be used for nuclear and other
special applications. See Specification A962/A962M for the
3. Ordering Information
definition of bolting.
3.1 The inquiry and orders for material under this specifi-
1.2 The following referenced common requirements are
cation shall include the following, as required, to describe the
indispensableforapplicationofthisspecification:Specification
desired material adequately:
A962/A962M.
3.1.1 Grade and Class
1.3 Supplementary requirements of an optional nature are
3.1.2 Condition (Section 5),
provided for use at the option of the purchaser. These supple-
3.1.3 Heat treatment (Section 6),
mentary requirements only apply when specified individually
3.1.4 Supplementary Requirements (S1 to S9),
by the purchaser in the purchase order or contract.
3.1.5 Reports required (Section 16),
1.4 This specification is expressed in both inch-pound units
3.1.6 End use, and
and in SI units; however, unless the purchase order or contract
3.1.7 Any special requirements.
specifies the applicable “M” specification designation (SI
3.2 The purchaser is referred to the listed supplementary
units), inch-pound units shall apply.
requirements.
1.5 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. Within the text, the
4. Common Requirements
SI units are shown in brackets. The values stated in each
4.1 Bolting supplied to this specification shall conform to
system may not be exact equivalents; therefore, each system
therequirementsofSpecificationA962/A962M.Theserequire-
shall be used independently of the other. Combining values
ments include test methods, finish, thread dimensions, macro
from the two systems may result in non-conformance with the
etch, marking, certification, optional supplementary require-
standard.
ments, and others. Failure to comply with the requirements of
Specification A962/A962M constitutes nonconformance with
2. Referenced Documents
3 this specification. In case of conflict between this specification
2.1 ASTM Standards:
and Specification A962/A962M, this specification shall pre-
A962/A962M Specification for Common Requirements for
vail.
Bolting Intended for Use at Any Temperature from Cryo-
5. Manufacture
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
5.1 Bolting material shall be supplied hot-rolled or hot-
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
forged or cold-finished at the option of the producer. However,
A01.22 on Steel Forgings and Wrought Fittings for PipingApplications and Bolting
if desired by the purchaser, cold finishing may be specified.
Materials for Piping and Special Purpose Applications.
Current edition approved April 1, 2010. Published May 2010. Originally
6. Heat Treatment
approved in 1965. Last previous edition approved in 2006 as A540/A540M–06.
DOI: 10.1520/A0540_A0540M-09.
6.1 Bolting material ordered in the annealed condition shall
2
For ASME Boiler and Pressure Vessel Code Applications see related Specifi-
haveastructuresuitableformachining.Suchannealedmaterial
cation SA-540 in Section II of that Code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
is not intended to be used without subsequent quenching and
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
tempering as specified in 6.2
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.
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A540/A540M – 10
6.2 Bolting ordered in the liquid-quenched and tempered 9. Hardness Requirements
condition shall be uniformly reheated from a temperature
9.1 The hardness shall be determined on the surface of the
below the cooling transformation range to the proper austen-
material after removal of decarburization.
itizing temperature, quenched in a liquid medium under sub-
9.2 The hardness of material in the annealed condition shall
stantially uniform conditions, and then uniformly reheated for
n
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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:A540/A540M–06 Designation: A540/A540M – 10
Standard Specification for
1
Alloy-Steel Bolting Materials for Special Applications
This standard is issued under the fixed designationA540/A540M; 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 (ϵ) indicates an editorial change since the last revision or reapproval.
1. Scope*
2
1.1 This specification covers regular and special-quality alloy steel bolting materials which may be used for nuclear and other
special applications. Bolting materials as used in this specification cover rolled or forged bars, rotary pierced or extruded seamless
tubes, bored bars, or forged hollows from forged or rolled bar segments to be manufactured into bolts, studs, washers, and nuts.
1.2Several grades of steel are covered. The grade and class shall be specified by the purchaser.
1.3Supplementary requirements of an optional nature are provided for use when special quality is desired. These supplementary
requirementscallforadditionalteststobemadeandwhendesiredshallbesostatedintheorder,togetherwiththeacceptancelimits
required.
1.4This 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 to inch-pound units.
1.5The 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. covers
regular and special-quality alloy steel bolting that may be used for nuclear and other special applications. See Specification
A962/A962M for the definition of bolting.
1.2 The following referenced common requirements are indispensable for application of this specification: Specification
A962/A962M.
1.3 Supplementary requirements of an optional nature are provided for use at the option of the purchaser. These supplementary
requirements only apply when specified individually by the purchaser in the purchase order or contract.
1.4 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract
specifies the applicable “M” specification designation (SI units), inch-pound units shall apply.
1.5 ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunits
are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used
independently of the other. Combining values from the two systems may result in non-conformance with the standard.
2. Referenced Documents
3
2.1 ASTM Standards:
A962/A962M Specification for Common Requirements for Bolting Intended for Use atAnyTemperature from Cryogenic to the
Creep Range
E45 Test Methods for Determining the Inclusion Content of Steel
2.2 AIAG Standard:
AIAG B-5 02.00Primary Metals Identification Tag Application Standard
2.3 ANSI Standards:
B 1.1Unified Screw Threads
B 18.2.1Square and Hex Bolts and Screws Including Hex Cap Screws and Lag Bolts
B 18.2.2Square and Hex Nuts
B 18.3Hexagon Socket and Spline Socket Screws
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel,Steel and Related Alloys,Alloys and is the direct responsibility of
Subcommittee A01.22 on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications.
Current edition approved MarchApril 1, 2006.2010. Published March 2006.May 2010. Originally approved in 1965. Last previous edition approved in 20052006 as
A540/A540M–05.A540/A540M–06. DOI: 10.1520/A0540_A0540M-069.
2
For ASME Boiler and Pressure Vessel Code Applications see related Specification SA-540 in Section II of that Code.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
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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