ASTM A29/A29M-23
(Specification)Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
ABSTRACT
This guide covers a group of requirements for carbon and alloy steel bars under each of the following specifications: hot-rolled carbon steel bars, cold-finished carbon steel bars, hot-rolled alloy steel bars, and cold-finished alloy steel bars. Heat and product analysis shall be performed on several grades of carbon steel bars, wherein the material shall conform to the required chemical composition for carbon, manganese, phosphorus, and sulfur. Several grades of alloy steel bars shall also undergo heat and product analysis and shall meet the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, and molybdenum. When compositions other than those indicated in the specified chemical components are required, the composition limits shall be prepared using the specified ranges and limits for carbon steel and alloy steel. The material shall undergo grain size test and shall conform to the specified grain size requirement. Mechanical tests shall also be performed on the steel test specimens.
SCOPE
1.1 This specification2 covers a group of common requirements which, unless otherwise specified in the purchase order or in an individual specification, shall apply to carbon and alloy steel bars under each of the following ASTM specifications (or under any other ASTM specification which invokes this specification or portions thereof):
Title of Specification
ASTM
DesignationA
Hot-Rolled Carbon Steel Bars:
Steel Bars, Carbon, Quenched and Tempered
A321
Steel Bars and Shapes, Carbon Rolled from “T'' Rails
A499
Steel Bars, Carbon, Merchant Quality, M-Grades
A575
Steel Bars, Carbon, Hot-Wrought, Special Quality
A576
Steel Bars, Carbon, Merchant Quality, Mechanical Properties
A663/A663M
Steel Bars, Carbon, Hot-Wrought, Special Quality, Mechanical Properties
A675/A675M
Carbon and Alloy Steel Bars for Springs
A689
Cold-Finished Carbon Steel Bars:
Steel Bar, Carbon and Alloy, Cold-Finished
A108
Cold-Drawn Stress-Relieved Carbon Steel Bars Subject to Mechanical Property Requirements
A311/A311M
Hot-Rolled Alloy Steel Bars:
Steel Bars, Alloy, Standard Grades
A322
Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements
A304
Steel Bars, Alloy, Hot-Wrought or Cold-Finished, Quenched and Tempered
A434/A434M
Steel Bars, Alloy, Hot-Wrought, for Elevated Temperature or Pressure-Containing Parts, or Both
A739
Cold-Finished Alloy Steel Bars:
Steel Bars, Alloy, Hot-Rolled or Cold-Finished, Quenched and Tempered
A434/A434M
Steel Bars, Carbon, Hot-Wrought or Cold-Finished, Special Quality, for Pressure Piping Components
A696
A These designations refer to the latest issue of the respective specifications, which appear either in the Annual Book of ASTM Standards, Vol 01.05, or as reprints obtainable from ASTM.
1.2 In case of any conflict in requirements, the requirements of the purchase order, the individual material specification, and this general specification shall prevail in the sequence named.
1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall used independently of the other, and values from the two systems shall not be combined.
1.4 For purposes of determining conformance to this specification and the various material specifications referenced in 1.1, dimensional values shall be rounded to the nearest unit in the right-hand place of figures used in expressing the limiting values in accordance with the rounding method of Practice E29.
Note 1: Specification A29/A29M previously listed dimensional tolerances for cold-finished bars; these are now found in Spe...
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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: A29/A29M − 23
Standard Specification for
General Requirements for Steel Bars, Carbon and Alloy,
1
Hot-Wrought
This standard is issued under the fixed designation A29/A29M; 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 U.S. Department of Defense.
1. Scope* 1.2 In case of any conflict in requirements, the requirements
of the purchase order, the individual material specification, and
2
1.1 This specification covers a group of common require-
this general specification shall prevail in the sequence named.
ments which, unless otherwise specified in the purchase order
1.3 The values stated in either inch-pound units or SI units
or in an individual specification, shall apply to carbon and alloy
are to be regarded separately as standard. The values stated in
steel bars under each of the following ASTM specifications (or
each system are not necessarily exact equivalents; therefore, to
under any other ASTM specification which invokes this
ensure conformance with the standard, each system shall used
specification or portions thereof):
independently of the other, and values from the two systems
Title of Specification ASTM
A
shall not be combined.
Designation
Hot-Rolled Carbon Steel Bars:
1.4 For purposes of determining conformance to this speci-
Steel Bars, Carbon, Quenched and Tempered A321
Steel Bars and Shapes, Carbon Rolled from “T’’ Rails A499 fication and the various material specifications referenced in
Steel Bars, Carbon, Merchant Quality, M-Grades A575
1.1, dimensional values shall be rounded to the nearest unit in
Steel Bars, Carbon, Hot-Wrought, Special Quality A576
the right-hand place of figures used in expressing the limiting
Steel Bars, Carbon, Merchant Quality, Mechanical A663/A663M
Properties values in accordance with the rounding method of Practice
Steel Bars, Carbon, Hot-Wrought, Special Quality, Me- A675/A675M
E29.
chanical Properties
Carbon and Alloy Steel Bars for Springs A689
NOTE 1—Specification A29/A29M previously listed dimensional toler-
Cold-Finished Carbon Steel Bars:
ances for cold-finished bars; these are now found in Specification A108.
Steel Bar, Carbon and Alloy, Cold-Finished A108
Cold-Drawn Stress-Relieved Carbon Steel Bars Sub- A311/A311M 1.5 This standard does not purport to address all of the
ject to Mechanical Property Requirements
safety concerns, if any, associated with its use. It is the
Hot-Rolled Alloy Steel Bars:
responsibility of the user of this standard to establish appro-
Steel Bars, Alloy, Standard Grades A322
Carbon and Alloy Steel Bars Subject to End-Quench A304 priate safety, health, and environmental practices and deter-
Hardenability Requirements
mine the applicability of regulatory limitations prior to use.
Steel Bars, Alloy, Hot-Wrought or Cold-Finished, A434/A434M
1.6 This international standard was developed in accor-
Quenched and Tempered
Steel Bars, Alloy, Hot-Wrought, for Elevated Tempera- A739
dance with internationally recognized principles on standard-
ture or Pressure-Containing Parts, or Both
ization established in the Decision on Principles for the
Cold-Finished Alloy Steel Bars:
Development of International Standards, Guides and Recom-
Steel Bars, Alloy, Hot-Rolled or Cold-Finished, A434/A434M
Quenched and Tempered
mendations issued by the World Trade Organization Technical
Steel Bars, Carbon, Hot-Wrought or Cold-Finished, A696
Barriers to Trade (TBT) Committee.
Special Quality, for Pressure Piping Components
A
These designations refer to the latest issue of the respective specifications, 2. Referenced Documents
which appear either in the Annual Book of ASTM Standards, Vol 01.05, or as
3
2.1 ASTM Standards:
reprints obtainable from ASTM.
A108 Specification for Steel Bar, Carbon and Alloy, Cold-
Finished
A304 Specification for Carbon and Alloy Steel Bars Subject
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
to End-Quench Hardenability Requirements
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.15 on Bars.
Current edition approved July 1, 2023. Published July 2023. Originally approved
3
in 1957. Last previous edition approved in 2020 as A29/A29M – 20. DOI: For referenced ASTM standards, visit the ASTM website, www.astm.org, or
10.1520/A0029_A0029M-23. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2
For ASME Boiler and Pressure Vessel Co
...
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: A29/A29M − 20 A29/A29M − 23
Standard Specification for
General Requirements for Steel Bars, Carbon and Alloy,
1
Hot-Wrought
This standard is issued under the fixed designation A29/A29M; 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 U.S. Department of Defense.
1. Scope*
2
1.1 This specification covers a group of common requirements which, unless otherwise specified in the purchase order or in an
individual specification, shall apply to carbon and alloy steel bars under each of the following ASTM specifications (or under any
other ASTM specification which invokes this specification or portions thereof):
Title of Specification ASTM
A
Designation
Hot-Rolled Carbon Steel Bars:
Steel Bars, Carbon, Quenched and Tempered A321
Steel Bars and Shapes, Carbon Rolled from “T’’ Rails A499
Steel Bars, Carbon, Merchant Quality, M-Grades A575
Steel Bars, Carbon, Hot-Wrought, Special Quality A576
Steel Bars, Carbon, Merchant Quality, Mechanical A663/A663M
Properties
Steel Bars, Carbon, Hot-Wrought, Special Quality, Me- A675/A675M
chanical Properties
Steel Bars for Springs, Carbon and Alloy A689
Carbon and Alloy Steel Bars for Springs A689
Cold-Finished Carbon Steel Bars:
Steel Bars, Carbon and Alloy, Cold-Finished A108
Steel Bar, Carbon and Alloy, Cold-Finished A108
Cold-Drawn Stress-Relieved Carbon Steel Bars Sub- A311/A311M
ject to Mechanical Property Requirements
Hot-Rolled Alloy Steel Bars:
Steel Bars, Alloy, Standard Grades A322
Carbon and Alloy Steel Bars Subject to End-Quench A304
Hardenability Requirements
Steel Bars, Alloy, Hot-Wrought or Cold-Finished, A434/A434M
Quenched and Tempered
Steel Bars, Alloy, Hot-Wrought, for Elevated Tempera- A739
ture or Pressure-Containing Parts, or Both
Cold-Finished Alloy Steel Bars:
Steel Bars, Alloy, Hot-Rolled or Cold-Finished, A434/A434M
Quenched and Tempered
Steel Bars, Carbon, Hot-Wrought or Cold-Finished, A696
Special Quality, for Pressure Piping Components
A
These designations refer to the latest issue of the respective specifications, which appear either in the Annual Book of
ASTM Standards, Vol 01.05, or as reprints obtainable from ASTM.
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 A01.15
on Bars.
Current edition approved July 1, 2020July 1, 2023. Published July 2020July 2023. Originally approved in 1957. Last previous edition approved in 20162020 as
A29/A29M – 16.A29/A29M – 20. DOI: 10.1520/A0029_A0029M-20.10.1520/A0029_A0029M-23.
2
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-29/SA-29M in Section II of that Code.
*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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A29/A29M − 23
1.2 In case of any conflict in requirements, the requirements of the purchase order, the individual material specification, and this
general specification shall prevail in the sequence named.
1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each
system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall used
independently of the other, and values from the two systems shall not be combined.
1.4 For purposes of determining conformance to this specification and the various material specifications referenced in 1.1,
dimensional values shall be rounded to the nearest unit in the right-hand place of figures used in expressing the limiting values
in accordance with the rounding method of Practice E29.
NOTE 1—Specification A29/A29M previously listed dimensional tolerances for cold-finished bars; these are now found in Specification A108.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.6 This international standard was developed in accordance with i
...
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