ASTM A663/A663M-23

Standard Specification for Steel Bars, Carbon, Merchant Quality, Mechanical Properties

ABSTRACT
This specification covers hot-wrought merchant quality carbon steel bars and bar size shapes produced to mechanical property requirements and intended for noncritical constructional applications. The bars shall be available in round, square and hexagonal shapes. The steel shall be made by the open-hearth, basic-oxygen, or electric-furnace process. The specimens shall undergo a tension test to determine tensile strength, yield point and elongation. The merchant quality bars shall be from visible pipe; however, they may contain pronounced chemical segregation. Internal porosity, surface seams, and other surface irregularities may be present in this quality. The bars shall also be furnished as rolled and not pickled, blast cleaned, or oiled.
SCOPE
1.1 This specification covers hot-wrought merchant quality carbon steel bars and bar size shapes produced to mechanical property requirements and intended for noncritical constructional applications (see 8.2).  
1.2 Merchant quality hot-wrought steel bar is available in the following ranges of size and section:  
1.2.1 Rounds, squares, and hexagons with diameters or distance across flats under 3 in. [75 mm].  
1.2.2 Bar size shapes with maximum dimensions under 3 in. [75 mm].  
1.2.3 Other bar sections with weight per foot under 40.84 lb/ft [60.78 kg/m].  
1.2.4 Flats 6 in. [152 mm] or under in width, over 0.203 in. [over 5 mm in thickness up to 150 mm in width] in thickness, and under 40.84 lb/ft or 12 in.2 [77.4 cm2] in cross-sectional area.  
1.2.5 Flats over 6 in. to 8 in., inclusive in width, 0.230 in. and over [over 6 mm in thickness and over 50 mm through 200 mm in width] in thickness and under 40.84 lb/ft [60.78 kg/m] or 12 in.2 [77.4 cm2] in cross-sectional area.  
1.2.6 Hot-wrought merchant quality carbon steel bars subject to mechanical property requirements are hot wrought in straight lengths only.  
1.3 Some applications may require one or more of the available designations shown under supplementary requirements.  
Note 1: Special quality hot-wrought carbon steel bars subject to mechanical property requirements are covered in Specification A675/A675M.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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.  
1.5 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: Published
• Publication Date: 31-Oct-2023
• ICS: 77.140.60 - Steel bars and rods
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.15 - Bars

Relations

• Replaces: ASTM A663/A663M-17 - Standard Specification for Steel Bars, Carbon, Merchant Quality, Mechanical Properties
• Effective Date: 01-Nov-2023
• Referred By: ASTM A675/A675M-14(2019) - Standard Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality, Mechanical Properties
• Effective Date: 01-Nov-2023
• Referred By: ASTM A29/A29M-23 - Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
• Effective Date: 01-Nov-2023

Standards Content (Sample)

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: A663/A663M − 23
Standard Specification for
Steel Bars, Carbon, Merchant Quality, Mechanical
1
Properties
This standard is issued under the fixed designation A663/A663M; 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* system shall be used independently of the other. Combining
values from the two systems may result in non-conformance
1.1 This specification covers hot-wrought merchant quality
with the standard.
carbon steel bars and bar size shapes produced to mechanical
1.5 This international standard was developed in accor-
property requirements and intended for noncritical construc-
dance with internationally recognized principles on standard-
tional applications (see 8.2).
ization established in the Decision on Principles for the
1.2 Merchant quality hot-wrought steel bar is available in
Development of International Standards, Guides and Recom-
the following ranges of size and section:
mendations issued by the World Trade Organization Technical
1.2.1 Rounds, squares, and hexagons with diameters or
Barriers to Trade (TBT) Committee.
distance across flats under 3 in. [75 mm].
1.2.2 Bar size shapes with maximum dimensions under 3 in.
2. Referenced Documents
[75 mm].
2
2.1 ASTM Standards:
1.2.3 Other bar sections with weight per foot under
A29/A29M Specification for General Requirements for Steel
40.84 lb ⁄ft [60.78 kg/m].
Bars, Carbon and Alloy, Hot-Wrought
1.2.4 Flats 6 in. [152 mm] or under in width, over 0.203 in.
A370 Test Methods and Definitions for Mechanical Testing
[over 5 mm in thickness up to 150 mm in width] in thickness,
2 2
of Steel Products
and under 40.84 lb/ft or 12 in. [77.4 cm ] in cross-sectional
A675/A675M Specification for Steel Bars, Carbon, Hot-
area.
Wrought, Special Quality, Mechanical Properties
1.2.5 Flats over 6 in. to 8 in., inclusive in width, 0.230 in.
A941 Terminology Relating to Steel, Stainless Steel, Related
and over [over 6 mm in thickness and over 50 mm through
Alloys, and Ferroalloys
200 mm in width] in thickness and under 40.84 lb/ft [60.78
2 2
E290 Test Methods for Bend Testing of Material for Ductil-
kg/m] or 12 in. [77.4 cm ] in cross-sectional area.
ity
1.2.6 Hot-wrought merchant quality carbon steel bars sub-
ject to mechanical property requirements are hot wrought in
3. Terminology
straight lengths only.
3.1 Definitions:
1.3 Some applications may require one or more of the
3.1.1 For definitions of terms used in this standard, refer to
available designations shown under supplementary require-
Terminology A941.
ments.
4. Ordering Information
NOTE 1—Special quality hot-wrought carbon steel bars subject to
mechanical property requirements are covered in Specification A675/
4.1 Orders for material under this specification should
A675M.
include the following information:
1.4 The values stated in either SI units or inch-pound units
4.1.1 Quantity (weight or number of pieces),
are to be regarded separately as standard. The values stated in
4.1.2 Dimensions (cross-sectional shape, size, and length),
each system may not be exact equivalents; therefore, each
4.1.3 Name of material (merchant quality carbon steel bars),
4.1.4 Specification number and date of issue,
4.1.5 Grade designation,
1
This specification is under the jurisdiction of Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
2
A01.15 on Bars. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Nov. 1, 2023. Published November 2023. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1972. Last previous edition approved in 2017 as A663/A663M – 17. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/A0663_A0663M-23. 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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A663/A663M − 23
1
4.1.6 Copper bearing steel (if required), increase of ⁄32 in. [0.8 mm] in the specified thickness or
3
4.1.7 Heat analysis or test report (request, if required), diameter above ⁄4 in. [19 mm].
4.1.8 Application and processing, and 5
7.1.7 For material under ⁄16 in. [8 mm] in thickness or
4
...

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: A663/A663M − 17 A663/A663M − 23
Standard Specification for
Steel Bars, Carbon, Merchant Quality, Mechanical
1
Properties
This standard is issued under the fixed designation A663/A663M; 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 merchant quality carbon steel bars and bar size shapes produced to mechanical property
requirements and intended for noncritical constructional applications (see 7.28.2).
1.2 Merchant quality hot-wrought steel bar is available in the following ranges of size and section:
1.2.1 Rounds, squares, and hexagons with diameters or distance across flats under 3 in. [75 mm].
1.2.2 Bar size shapes with maximum dimensions under 3 in. [75 mm].
1.2.3 Other bar sections with weight per foot under 40.84 lb ⁄ft [60.78 kg/m].
1.2.4 Flats 6 in. [152 mm] or under in width, over 0.203 in. [over 5 mm in thickness up to 150 mm in width] in thickness, and
2 2
under 40.84 lb/ft or 12 in. [77.4 cm ] in cross-sectional area.
1.2.5 Flats over 6 in. to 8 in., inclusive in width, 0.230 in. and over [over 6 mm in thickness and over 50 mm through 200 mm
2 2
200 mm in width] in thickness and under 40.84 lb/ft [60.78 kg/m] or 12 in. [77.4 cm ] in cross-sectional area.
1.2.6 Hot-wrought merchant quality carbon steel bars subject to mechanical property requirements are hot wrought in straight
lengths only.
1.3 Some applications may require one or more of the available designations shown under supplementary requirements.
NOTE 1—Special quality hot-wrought carbon steel bars subject to mechanical property requirements are covered in Specification A675/A675M.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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.
1.5 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.
1
This specification is under the jurisdiction of Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.15 on
Bars.
Current edition approved Nov. 1, 2017Nov. 1, 2023. Published December 2017November 2023. Originally approved in 1972. Last previous edition approved in 20122017
as A663/A663M – 12.A663/A663M – 17. DOI: 10.1520/A0663_A0663M-17.10.1520/A0663_A0663M-23.
*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

---------------------- Page: 1 ----------------------
A663/A663M − 23
2. Referenced Documents
2
2.1 ASTM Standards:
A29/A29M Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A675/A675M Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality, Mechanical Properties
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
E290 Test Methods for Bend Testing of Material for Ductility
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this standard, refer to Terminology A941.
4. Ordering Information
4.1 Orders for material under this specification should include the following information:
4.1.1 Quantity (weight or number of pieces),
4.1.2 Dimensions (cross-sectional shape, size, and length),
4.1.3 Name of material (merchant quality carbon steel bars),
4.1.4 Specification number and date of issue,
4.1.5 Grade designation,
4.1.6 Copper bearing steel (if required),
4.1.7 Heat analysis or test report (request, if required),
4.1.8 Application and processing, and
4.1.9 Supplementary requirements (if required).
5. Manufacture
5.1 The steel shall be made by the basic-oxygen or electric-furnace process.
6. Chemical Composition
6.1 The steel shall conform on he
...