ASTM A540/A540M-06
(Specification)Standard Specification for Alloy-Steel Bolting Materials for Special Applications
Standard Specification for Alloy-Steel Bolting Materials 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 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.
1.2 Several grades of steel are covered. The grade and class shall be specified by the purchaser.
1.3 Supplementary requirements of an optional nature are provided for use when special quality is desired. These supplementary requirements call for additional tests to be made and when desired shall be so stated in the order, together with the acceptance limits required.
1.4 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 to inch-pound units.
1.5 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.
General Information
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Standards Content (Sample)
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Designation: A540/A540M – 06
Standard Specification for
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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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* E45 Test Methods for Determining the Inclusion Content of
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Steel
1.1 This specification covers regular and special-quality
2.2 AIAG Standard:
alloy steel bolting materials which may be used for nuclear and
AIAG B-5 02.00 Primary Metals Identification Tag Appli-
other special applications. Bolting materials as used in this
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cation Standard
specification cover rolled or forged bars, rotary pierced or
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2.3 ANSI Standards:
extruded seamless tubes, bored bars, or forged hollows from
B 1.1 Unified Screw Threads
forged or rolled bar segments to be manufactured into bolts,
B 18.2.1 Square and Hex Bolts and Screws Including Hex
studs, washers, and nuts.
Cap Screws and Lag Bolts
1.2 Several grades of steel are covered. The grade and class
B 18.2.2 Square and Hex Nuts
shall be specified by the purchaser.
B 18.3 Hexagon Socket and Spline Socket Screws
1.3 Supplementary requirements of an optional nature are
provided for use when special quality is desired. These
3. Ordering Information
supplementaryrequirementscallforadditionalteststobemade
3.1 The inquiry and orders for material under this specifi-
and when desired shall be so stated in the order, together with
cation shall include the following, as required, to describe the
the acceptance limits required.
desired material adequately:
1.4 This specification is expressed in both inch-pound units
3.1.1 Condition (Section 5),
and in SI units. However, unless the order specifies the
3.1.2 Heat treatment (Section 6),
applicable“ M” specification designation (SI units), the mate-
3.1.3 Supplementary Requirements (S1 to S9),
rial shall be furnished to inch-pound units.
3.1.4 Reports required (Section 17),
1.5 The values stated in either inch-pound units or SI units
3.1.5 End use, and
are to be regarded separately as standard. Within the text, the
3.1.6 Any special requirements.
SI units are shown in brackets. The values stated in each
3.2 The purchaser is referred to the listed supplementary
system are not exact equivalents; therefore, each system must
requirements.
be used independently of the other. Combining values from the
two systems may result in nonconformance with the specifi-
4. Common Requirements
cation.
4.1 Materialandfastenerssuppliedtothisspecificationshall
2. Referenced Documents conform to the requirements of Specification A962/A962M.
3 These requirements include test methods, finish, thread dimen-
2.1 ASTM Standards:
sions, marking, certification, optional supplementary require-
A962/A962M Specification for Common Requirements for
ments, and others. Failure to comply with the requirements of
SteelFastenersorFastenerMaterials,orBoth,Intendedfor
Specification A962/A962M constitutes nonconformance with
Use at Any Temperature from Cryogenic to the Creep
this specification. In case of conflict between this specification
Range
and Specification A962/A962M, this specification shall pre-
vail.
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and RelatedAlloys, and is the direct responsibility of Subcommittee
5. Manufacture
A01.22 on Steel Forgings and Wrought Fittings for PipingApplications and Bolting
Materials for Piping and Special Purpose Applications. 5.1 The material shall be supplied hot-rolled or hot-forged
Current edition approved March 1, 2006. Published March 2006. Originally
or cold-finished at the option of the producer. However, if
approved in 1965. Last previous edition approved in 2005 as A540/A540M – 05.
desired by the purchaser, cold finishing may be specified.
DOI: 10.1520/A0540_A0540M-06.
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For ASME Boiler and Pressure Vessel Code Applications see related Specifi-
cation SA-540 in Section II of that Code.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Automotive Industry Action Group, 26200 Lahser, Suite 200,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Southfield, MI 48034.
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Standards volume information, refer to the standard’s Document Summary page on Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036.
*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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