ASTM A322-13(2018)

Standard Specification for Steel Bars, Alloy, Standard Grades

ABSTRACT
This specification covers hot-wrought alloy steel bars. The steel shall be made by one or more of the following primary processes: open-hearth, basic-oxygen, or electric-furnace. The primary melting may incorporate separate degassing or refining and may be followed by secondary melting using electro-slag remelting or vacuum arc remelting. Where secondary remelting is employed, the heat shall be defined as all of the cast product remelted from a single primary heat. The steel shall be furnished as strand cast or ingot cast. Immediately after hot forming, the bars shall be allowed to cool to a temperature below the critical range under suitable conditions to prevent imperfections caused by too rapid cooling. The bars shall be free of pipe, cracks, and flakes. Within the limits of good manufacturing and inspection practices, the bars shall be free of injurious seams, laps, segregation, or other imperfections which are due to their nature, degree, or extent, will interfere with the use of the material in machining or fabrication of suitable parts.
SCOPE
1.1 This specification covers hot-wrought alloy steel bars. Bar applications include forging, heat treating, cold drawing, machining and many structural components (Note 1).  
Note 1: A guide for the selection of steel bars is contained in Practice A400.  
1.2 The bars shall be furnished in the grades specified in Table 1. Sections and sizes of bar steel available are covered in Specification A29/A29M. Hot-wrought alloy steel bars are produced in cut lengths and coils; the manufacturer should be consulted regarding sections and sizes available in coils, produced to a chemical composition.  
1.3 Some applications may require superior surface quality, or special chemical restrictions, metallurgical characteristics, heat treatment, or surface finishes which the purchaser may obtain by designating one or more of the available Supplementary Requirements.  
1.4 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.

General Information

• Status: Historical
• Publication Date: 31-Aug-2018
• ICS: 77.140.60 - Steel bars and rods
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.15 - Bars

Relations

• Replaced By: ASTM A322-13(2018)e1 - Standard Specification for Steel Bars, Alloy, Standard Grades
• Effective Date: 01-Sep-2018

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:A322 −13 (Reapproved 2018)
Standard Specification for
1
Steel Bars, Alloy, Standard Grades
This standard is issued under the fixed designation A322; 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 E112 Test Methods for Determining Average Grain Size
E381 Method of Macroetch Testing Steel Bars, Billets,
1.1 This specification covers hot-wrought alloy steel bars.
Blooms, and Forgings
Bar applications include forging, heat treating, cold drawing,
E527 Practice for Numbering Metals and Alloys in the
machining and many structural components (Note 1).
Unified Numbering System (UNS)
NOTE 1—Aguide for the selection of steel bars is contained in Practice
A400.
3. Ordering Information
1.2 The bars shall be furnished in the grades specified in
3.1 Orders under this specification should include the fol-
Table 1. Sections and sizes of bar steel available are covered in
lowing as required to describe adequately the desired material:
Specification A29/A29M. Hot-wrought alloy steel bars are
3.1.1 Quantity (weight or number of bars),
produced in cut lengths and coils; the manufacturer should be
3.1.2 Name of material (hot-wrought alloy steel bars),
consulted regarding sections and sizes available in coils,
3.1.3 Dimensions,
produced to a chemical composition.
3.1.4 ASTM designation,
1.3 Some applications may require superior surface quality,
3.1.5 Deoxidation practice (see 5.3),
or special chemical restrictions, metallurgical characteristics,
3.1.6 Gradedesignationorchemicalcompositionlimits(see
heat treatment, or surface finishes which the purchaser may
6.1 and Table 1),
obtain by designating one or more of the available Supplemen-
3.1.7 Grain size if required,
tary Requirements.
3.1.8 Test reports, if required (Section 8),
1.4 This international standard was developed in accor-
3.1.9 Additions to the specification and Supplementary
dance with internationally recognized principles on standard-
Requirements, if required, and
ization established in the Decision on Principles for the
3.1.10 Application.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4. General Requirements
Barriers to Trade (TBT) Committee.
4.1 Material furnished under this specification shall con-
2. Referenced Documents
form to the applicable requirements of the current edition of
2
2.1 ASTM Standards: Specification A29/A29M, unless otherwise provided herein.
A29/A29M SpecificationforGeneralRequirementsforSteel
Bars, Carbon and Alloy, Hot-Wrought
5. Materials and Manufacture
A304 Specification for Carbon andAlloy Steel Bars Subject
5.1 The steel shall be made by one or more of the following
to End-Quench Hardenability Requirements
primary processes: basic-oxygen or electric-furnace. The pri-
A400 Practice for Steel Bars, Selection Guide, Composition,
mary melting may incorporate separate degassing or refining
and Mechanical Properties
and may be followed by secondary melting using electro-slag
remelting or vacuum arc remelting. Where secondary melting
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
is employed, the heat shall be defined as all of the cast product
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
remelted from a single primary heat.
A01.15 on Bars.
Current edition approved Sept. 1, 2018. Published September 2018. Originally
5.2 The steel shall be furnished as strand cast or ingot cast,
approved in 1947. Last previous edition approved in 2013 as A322–13. DOI:
unless otherwise specified.
10.1520/A0322–13R18.
2
5.2.1 Discard—A sufficient discard shall be made to secure
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
freedom from injurious piping and undue segregation.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 5.3 Deoxidation—Killed steel is required.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
A322−13 (2018)
A, B
TABLE 1 Grade Designations and Chemical Compositions of Hot-Wrought Alloy Steel Bars
D
UNS Grade Chemical Composition, Ranges and Limits, %
C
Designations
Designation E F
Carbon Manganese Phosphorus, Sulfur, Silicon Nickel Chromium Molybdenum
max
max
G13300 1330 0.28–0.33 1.60–1.90 0.035 0.040 0.15–0.35 . . .
G13350 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: A322 − 13 A322 − 13 (Reapproved 2018)
Standard Specification for
1
Steel Bars, Alloy, Standard Grades
This standard is issued under the fixed designation A322; 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
1.1 This specification covers hot-wrought alloy steel bars. Bar applications include forging, heat treating, cold drawing,
machining and many structural components (Note 1).
NOTE 1—A guide for the selection of steel bars is contained in Practice A400.
1.2 The bars shall be furnished in the grades specified in Table 1. Sections and sizes of bar steel available are covered in
Specification A29/A29M. Hot-wrought alloy steel bars are produced in cut lengths and coils; the manufacturer should be consulted
regarding sections and sizes available in coils, produced to a chemical composition.
1.3 Some applications may require superior surface quality, or special chemical restrictions, metallurgical characteristics, heat
treatment, or surface finishes which the purchaser may obtain by designating one or more of the available Supplementary
Requirements.
1.4 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A29/A29M Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
A304 Specification for Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements
A400 Practice for Steel Bars, Selection Guide, Composition, and Mechanical Properties
E112 Test Methods for Determining Average Grain Size
E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
3. Ordering Information
3.1 Orders under this specification should include the following as required to describe adequately the desired material:
3.1.1 Quantity (weight or number of bars),
3.1.2 Name of material (hot-wrought alloy steel bars),
3.1.3 Dimensions,
3.1.4 ASTM designation,
3.1.5 Deoxidation practice (see 5.3),
3.1.6 Grade designation or chemical composition limits (see 6.1 and Table 1),
3.1.7 Grain size if required,
3.1.8 Test reports, if required (Section 8),
3.1.9 Additions to the specification and Supplementary Requirements, if required, and
3.1.10 Application.
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 May 1, 2013Sept. 1, 2018. Published June 2013September 2018. Originally approved in 1947. Last previous edition approved in 20072013 as
A322 – 07.A322–13. DOI: 10.1520/A0322-13.10.1520/A0322–13R18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
A322 − 13 (2018)
AA, B,B
TABLE 1 Grade Designations and Chemical Compositions of Hot-Wrought Alloy Steel Bars
D
UNS Grade Chemical Composition, Ranges and Limits, %
C
Designations
Designation E F
Carbon Manganese Phosphorus, Sulfur, Silicon Nickel Chromium Molybdenum
max
max
G13300 1330 0.28–0.33 1.60–1.90 0.035 0.040 0.15–0.35 . . .
G13350 1335 0.33–0.38 1.60–1.90 0.035 0.040 0.15–0.35 . . .
G13400 1340 0.38–0.43 1.60–1.90 0.035 0.040 0.15–0.35 . . .
G13450 1345 0.43–0.48 1.60–1.90 0.035 0.040 0.15–0.35 . . .
G40120 4012 0.09–0.14 0.75–1.00 0.035 0.040 0.15–0.35 . . 0.15–0.25
G40230 4023 0.20–0.25 0.70–0.90 0.035 0.040 0.15–0.35 . . 0.20–0.30
G40240 4024 0.20–0.25 0.70–0.90 0.035 0.035–0.050 0.15–0.35 . . 0.20–0.30
G40270 4027 0.25–0.30 0.70–0.90 0.035 0.040 0.15–0.35 . . 0.20–0.30
G40280 4028 0.25–0.30 0.70–0.90
...