ASTM A962/A962M-23a
(Specification)Standard Specification for Common Requirements for Bolting Intended for Use at Any Temperature from Cryogenic to the Creep Range
Standard Specification for Common Requirements for Bolting Intended for Use at Any Temperature from Cryogenic to the Creep Range
ABSTRACT
This specification covers a group of common requirements that shall apply to carbon, alloy, and stainless steel fasteners or fastener materials, or both. These materials are intended for use at any temperature from cryogenic to the creep range. Requirements for the melting process and quality control procedures for ingot cast and strand cast products are detailed. Bars and fasteners shall be produced in accordance with the product specification. The chemical composition, as to heat and product analyses, shall conform to the limits of the product specification. Bars, fasteners, bolting materials, and specimen machined from fasteners shall meet the mechanical requirements which shall be determined by the following tests: (1) proof load test by mandrel/tension or compression methods, (2) cone proof load test, (3) impact test, and (4) hardness test. Assembly for the proof load and cone proof tests are illustrated. The depth of decarburization shall be determined by metallographic etching and if needed, microhardness testing.
SCOPE
1.1 This specification covers a group of common requirements that shall apply to carbon, alloy, stainless steel, and nickel alloy bolting under any of the following ASTM Specifications (or under any other ASTM Specifications that invoke this specification or portions thereof):
Title of Specifications
ASTM Designation
Alloy-Steel and Stainless Steel Bolting for
High Temperature or High Pressure Service and
Other Special Purpose Applications
A193/A193M
Carbon Steel, Alloy Steel, and Stainless Steel Nuts
for Bolts for High Pressure or High Temperature
Service, or Both
A194/A194M
Alloy-Steel and Stainless Steel Bolting for Low-
Temperature Service
A320/A320M
Stainless and Alloy-Steel Turbine-Type Bolting
Specially Heat Treated for High-Temperature
Service
A437/A437M
High-Temperature Bolting, with Expansion
Coefficients Comparable to Austenitic Stainless
Steels
A453/A453M
Alloy-Steel Bolting for Special Applications
A540/A540M
Precipitation-Hardening Bolting (UNS N07718)
for High Temperature Service
A1014/A1014M
High Strength Precipitation Hardening and Duplex
Stainless Steel Bolting for Special Purpose
Applications
A1082/A1082M
1.2 In case of conflict, the requirements of the individual product specification shall prevail over those of this specification.
1.3 Fasteners are a wide-ranging classification that includes screws, bolts, nuts, washers, stud bolts, rivets, powder-actuated studs, staples, tacks, and pins. Bolting, which is composed of bolting materials, such as rods, bars, flats, and forgings, which are subsequently manufactured into bolting components, are a special sub-group of fasteners. Bolting materials and components have designated compositions and specific properties intended for applications in aggressive service where commercial generic fasteners may not be suitable or have insufficient fitness for purpose under certain conditions. These conditions include cryogenic or high temperature service, or excessive vibration, impact, or shock. To further address any other special service conditions where bolting is intended for use, additional requirements may be specified by mutual agreement between the purchaser and supplier.
1.4 Supplementary requirements are provided for use at the option of the purchaser. The supplementary requirements only apply when specified individually by the purchaser in the purchase order or contract.
1.5 This specification is expressed in both inch-pound units and in SI units. Unless the purchase order or contract specifies the applicable “M” specification designation (SI units) the inch-pound units shall apply. 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; there...
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: A962/A962M − 23a
Standard Specification for
Common Requirements for Bolting Intended for Use at Any
1
Temperature from Cryogenic to the Creep Range
This standard is issued under the fixed designation A962/A962M; 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* fitness for purpose under certain conditions. These conditions
include cryogenic or high temperature service, or excessive
1.1 This specification covers a group of common require-
vibration, impact, or shock. To further address any other
ments that shall apply to carbon, alloy, stainless steel, and
special service conditions where bolting is intended for use,
nickel alloy bolting under any of the following ASTM Speci-
additional requirements may be specified by mutual agreement
fications (or under any other ASTM Specifications that invoke
between the purchaser and supplier.
this specification or portions thereof):
1.4 Supplementary requirements are provided for use at the
Title of Specifications ASTM Designation
Alloy-Steel and Stainless Steel Bolting for A193/A193M
option of the purchaser. The supplementary requirements only
High Temperature or High Pressure Service and
apply when specified individually by the purchaser in the
Other Special Purpose Applications
purchase order or contract.
Carbon Steel, Alloy Steel, and Stainless Steel Nuts A194/A194M
for Bolts for High Pressure or High Temperature
1.5 This specification is expressed in both inch-pound units
Service, or Both
Alloy-Steel and Stainless Steel Bolting for Low- A320/A320M and in SI units. Unless the purchase order or contract specifies
Temperature Service
the applicable “M” specification designation (SI units) the
Stainless and Alloy-Steel Turbine-Type Bolting A437/A437M
inch-pound units shall apply. The values stated in either SI
Specially Heat Treated for High-Temperature
Service
units or inch-pound units are to be regarded separately as
High-Temperature Bolting, with Expansion A453/A453M
standard. Within the text, the SI units are shown in brackets.
Coefficients Comparable to Austenitic Stainless
The values stated in each system may not be exact equivalents;
Steels
Alloy-Steel Bolting for Special Applications A540/A540M therefore, each system shall be used independently of the other.
Precipitation-Hardening Bolting (UNS N07718) A1014/A1014M
Combining values from the two systems may result in noncon-
for High Temperature Service
formance with the specification.
High Strength Precipitation Hardening and Duplex A1082/A1082M
Stainless Steel Bolting for Special Purpose
1.6 This international standard was developed in accor-
Applications
dance with internationally recognized principles on standard-
1.2 In case of conflict, the requirements of the individual
ization established in the Decision on Principles for the
product specification shall prevail over those of this specifica-
Development of International Standards, Guides and Recom-
tion.
mendations issued by the World Trade Organization Technical
1.3 Fasteners are a wide-ranging classification that includes
Barriers to Trade (TBT) Committee.
screws, bolts, nuts, washers, stud bolts, rivets, powder-actuated
2. Referenced Documents
studs, staples, tacks, and pins. Bolting, which is composed of
The following documents shall form a part of this specifica-
bolting materials, such as rods, bars, flats, and forgings, which
tion to the extent specified. The latest issue shall apply un-
are subsequently manufactured into bolting components, are a
less otherwise specified.
special sub-group of fasteners. Bolting materials and compo-
2
nents have designated compositions and specific properties
2.1 ASTM Standards:
intended for applications in aggressive service where commer-
A29/A29M Specification for General Requirements for Steel
cial generic fasteners may not be suitable or have insufficient
Bars, Carbon and Alloy, Hot-Wrought
A193/A193M Specification for Alloy-Steel and Stainless
Steel Bolting for High Temperature or High Pressure
1 Service and Other Special Purpose Applications
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.22 on Steel Forgings and Wrought Fittings for Piping Applications and Bolting
2
Materials for Piping and Special Purpose Applications. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 15, 2023. Publ
...
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: A962/A962M − 23 A962/A962M − 23a
Standard Specification for
Common Requirements for Bolting Intended for Use at Any
1
Temperature from Cryogenic to the Creep Range
This standard is issued under the fixed designation A962/A962M; 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*
1.1 This specification covers a group of common requirements that shall apply to carbon, alloy, stainless steel, and nickel alloy
bolting under any of the following ASTM Specifications (or under any other ASTM Specifications that invoke this specification
or portions thereof):
Title of Specifications ASTM Designation
Alloy-Steel and Stainless Steel Bolting for A193/A193M
High Temperature or High Pressure Service and
Other Special Purpose Applications
Carbon Steel, Alloy Steel, and Stainless Steel Nuts A194/A194M
for Bolts for High Pressure or High Temperature
Service, or Both
Alloy-Steel and Stainless Steel Bolting for Low- A320/A320M
Temperature Service
Stainless and Alloy-Steel Turbine-Type Bolting A437/A437M
Specially Heat Treated for High-Temperature
Service
High-Temperature Bolting, with Expansion A453/A453M
Coefficients Comparable to Austenitic Stainless
Steels
Alloy-Steel Bolting for Special Applications A540/A540M
Precipitation-Hardening Bolting (UNS N07718) A1014/A1014M
for High Temperature Service
High Strength Precipitation Hardening and Duplex A1082/A1082M
Stainless Steel Bolting for Special Purpose
Applications
1.2 In case of conflict, the requirements of the individual product specification shall prevail over those of this specification.
1.3 Fasteners are a wide-ranging classification that includes screws, bolts, nuts, washers, stud bolts, rivets, powder-actuated studs,
staples, tacks, and pins. Bolting, which is composed of bolting materials, such as rods, bars, flats, and forgings, which are
subsequently manufactured into bolting components, are a special sub-group of fasteners. Bolting materials and components have
designated compositions and specific properties intended for applications in aggressive service where commercial generic fasteners
may not be suitable or have insufficient fitness for purpose under certain conditions. These conditions include cryogenic or high
temperature service, or excessive vibration, impact, or shock. To further address any other special service conditions where bolting
is intended for use, additional requirements may be specified by mutual agreement between the purchaser and supplier.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related 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 May 1, 2023May 15, 2023. Published June 2023. Originally approved in 1997. Last previous edition approved in 20222023 as
A962/A962M – 22.A962/A962M – 23. DOI: 10.1520/A0962_A0962M-23.10.1520/A0962_A0962M-23A.
*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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A962/A962M − 23a
1.4 Supplementary requirements are provided for use at the option of the purchaser. The supplementary requirements only apply
when specified individually by the purchaser in the purchase order or contract.
1.5 This specification is expressed in both inch-pound units and in SI units. Unless the purchase order or contract specifies the
applicable “M” specification designation (SI units) the inch-pound units shall apply. 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 nonconformance with the specification.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade O
...
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