ASTM A706/A706M-09a
(Specification)Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
ABSTRACT
This specification covers deformed and plain low-alloy steel bars in cut lengths or coils for concrete reinforcement intended for applications. Restrictive mechanical properties and chemical composition are required for compatibility with controlled tensile property applications or to enhance weldability. The steel shall be electric-furnace, basic-oxygen or open-hearth processed. Tension test, bend test and one set of dimensional property tests including bar weight and spacing, height, and gap of deformations shall be made of each bar size rolled from a heat. All tests and inspection shall be made at the place of manufacture prior to shipment, unless otherwise specified, and shall be conducted so as not to interfere unnecessarily with the operation of the works. A retest shall be provided when the specimen fails to meet the strength and elongation property requirements of the specification.
SCOPE
1.1 General—This specification covers deformed and plain low-alloy steel bars in cut lengths or coils for concrete reinforcement intended for applications where restrictive mechanical properties and chemical composition are required for compatibility with controlled tensile property applications or to enhance weldability. The standard sizes and dimensions of deformed bars and their number designations are given in Table 1. The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes, excluding those in tables, shall not be considered as requirements of this specification.
1.2 Grade—Bars are of two minimum yield strength levels: namely, 60 000 psi [420 MPa] and 80 000 [550], designated as Grade 60 [420] and Grade 80 [550], respectively.
Note 1—Bars designated as Grade 80 [550], which were introduced in the A706/A706M – 09a revision, may be outside consideration of consensus design codes and specifications.
1.3 Plain bars, in sizes up to and including 2½ in. [63.5 mm] in diameter in coils or cut lengths, when ordered, shall be furnished under this specification. For ductility properties (elongation and bending), test provisions of the nearest smaller nominal diameter deformed bar size shall apply.
1.4 Controlled Tensile Properties—This specification limits mechanical properties (Table 2) to provide the desired yield/tensile properties for controlled tensile property applications.
1.5 Welding—This specification limits chemical composition (6.2) and carbon equivalent (6.4) to enhance the weldability of the material. When steel is to be welded, a welding procedure suitable for the chemical composition and intended use or service should be used. The use of the latest edition of AWS D1.4/D1.4M is recommended. This document describes the proper selection of the filler metals, preheat/interpass temperatures, as well as, performance and procedure qualification requirements.
1.6 This specification is applicable for orders in either inch-pound units (Specification A706) or in SI units [Specification A706M].
1.7 The values stated in either inch-pound units or SI units are to be regarded 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 this specification.
1.8 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: A706/A706M – 09a
Standard Specification for
Low-Alloy Steel Deformed and Plain Bars for Concrete
1
Reinforcement
This standard is issued under the fixed designationA706/A706M; 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 Department of Defense.
1. Scope* 1.6 This specification is applicable for orders in either
inch-pound units (Specification A706) or in SI units [Specifi-
1.1 General—This specification covers deformed and plain
cation A706M].
low-alloy steel bars in cut lengths or coils for concrete
1.7 The values stated in either inch-pound units or SI units
reinforcement intended for applications where restrictive me-
are to be regarded as standard. Within the text, the SI units are
chanical properties and chemical composition are required for
shown in brackets. The values stated in each system are not
compatibilitywithcontrolledtensilepropertyapplicationsorto
exact equivalents; therefore, each system must be used inde-
enhance weldability. The standard sizes and dimensions of
pendentlyoftheother.Combiningvaluesfromthetwosystems
deformed bars and their number designations are given in
may result in nonconformance with this specification.
Table 1. The text of this specification references notes and
1.8 This standard does not purport to address all of the
footnotes that provide explanatory material. These notes and
safety concerns, if any, associated with its use. It is the
footnotes, excluding those in tables, shall not be considered as
responsibility of the user of this standard to establish appro-
requirements of this specification.
priate safety and health practices and determine the applica-
1.2 Grade—Bars are of two minimum yield strength levels:
bility of regulatory limitations prior to use.
namely, 60 000 psi [420 MPa] and 80 000 [550], designated as
Grade 60 [420] and Grade 80 [550], respectively.
2. Referenced Documents
2
NOTE 1—Bars designated as Grade 80 [550], which were introduced in
2.1 ASTM Standards:
theA706/A706M – 09a revision, may be outside consideration of consen-
A6/A6M SpecificationforGeneralRequirementsforRolled
sus design codes and specifications.
Structural Steel Bars, Plates, Shapes, and Sheet Piling
1
1.3 Plainbars,insizesuptoandincluding2 ⁄2in.[63.5mm]
A370 Test Methods and Definitions for Mechanical Testing
in diameter in coils or cut lengths, when ordered, shall be
of Steel Products
furnished under this specification. For ductility properties
A510 Specification for General Requirements for Wire
(elongation and bending), test provisions of the nearest smaller
Rods and Coarse Round Wire, Carbon Steel
nominal diameter deformed bar size shall apply.
A510M Specification for General Requirements for Wire
1.4 Controlled Tensile Properties—This specification limits
Rods and Coarse Round Wire, Carbon Steel (Metric)
mechanical properties (Table 2) to provide the desired yield/
A615/A615M Specification for Deformed and Plain
tensile properties for controlled tensile property applications.
Carbon-Steel Bars for Concrete Reinforcement
1.5 Welding—This specification limits chemical composi-
A700 PracticesforPackaging,Marking,andLoadingMeth-
tion (6.2) and carbon equivalent (6.4) to enhance the weldabil-
ods for Steel Products for Shipment
ity of the material. When steel is to be welded, a welding
A751 Test Methods, Practices, andTerminology for Chemi-
procedure suitable for the chemical composition and intended
cal Analysis of Steel Products
use or service should be used. The use of the latest edition of
E29 Practice for Using Significant Digits in Test Data to
AWS D1.4/D1.4M is recommended. This document describes
Determine Conformance with Specifications
3
the proper selection of the filler metals, preheat/interpass
2.2 AWS Standard:
temperatures, as well as, performance and procedure qualifi-
AWS D1.4/D1.4M Structural Welding Code—Reinforcing
cation requirements.
Steel
1 2
This specification is under the jurisdiction of ASTM Committee A01 on Steel, For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
A01.05 on Steel Reinforcement. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Oct. 1, 2009. Published November 2009. Originally the ASTM website.
3
approved in 1974. Last previous edition approved in 2009 as A706/A706M – 09. Available from American Welding Society (AWS), 550 NW LeJeune Rd.,
DOI: 10
...
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:A706/A706M–09 Designation: A706/A706M – 09a
Standard Specification for
Low-Alloy Steel Deformed and Plain Bars for Concrete
1
Reinforcement
This standard is issued under the fixed designationA706/A706M; 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 Department of Defense.
1. Scope*
1.1 General—This specification covers deformed and plain low-alloy steel bars in cut lengths or coils for concrete
reinforcement intended for applications where restrictive mechanical properties and chemical composition are required for
compatibility with controlled tensile property applications or to enhance weldability. The standard sizes and dimensions of
deformed bars and their number designations are given inTable 1.The text of this specification references notes and footnotes that
provide explanatory material. These notes and footnotes, excluding those in tables, shall not be considered as requirements of this
specification.
1.2 Grade—Bars are of a single minimum yield strength level: namely, 60000 psi [420 MPa], designated as Grade 60 [420].
—Bars are of two minimum yield strength levels: namely, 60 000 psi [420 MPa] and 80 000 [550], designated as Grade 60 [420]
and Grade 80 [550], respectively.
NOTE 1—Bars designated as Grade 80 [550], which were introduced in the A706/A706M – 09a revision, may be outside consideration of consensus
design codes and specifications.
1
1.3 Plainbars,insizesuptoandincluding2 ⁄2in.[63.5mm]indiameterincoilsorcutlengths,whenordered,shallbefurnished
under this specification. For ductility properties (elongation and bending), test provisions of the nearest smaller nominal diameter
deformed bar size shall apply.
1.4 Controlled Tensile Properties—This specification limits mechanical properties (Table 2) to provide the desired yield/tensile
properties for controlled tensile property applications.
1.5 Welding—This specification limits chemical composition (6.2) and carbon equivalent (6.4) to enhance the weldability of the
material.Whensteelistobewelded,aweldingproceduresuitableforthechemicalcompositionandintendeduseorserviceshould
be used. The use of the latest edition of AWS D1.4/D1.4M is recommended. This document describes the proper selection of the
filler metals, preheat/interpass temperatures, as well as, performance and procedure qualification requirements.
1.6 This specification is applicable for orders in either inch-pound units (Specification A706) or in SI units [Specification
A706M].
1.7 Thevaluesstatedineitherinch-poundunitsorSIunitsaretoberegardedasstandard.Withinthetext,theSIunitsareshown
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 this specification.
1.8 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
A6/A6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A510 Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel
A510M Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel (Metric)
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.05
on Steel Reinforcement.
Current edition approved MayOct. 1, 2009. Published MayNovember 2009. Originally approved in 1974. Last previous edition approved in 20082009 as
A706/A706M–08a.A706/A706M – 09. DOI: 10.1520/A0706_A0706M-09A.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*ASummary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr
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