ASTM A706/A706M-08a
(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 a single minimum yield strength level: namely, 60 000 psi [420 MPa], designated as Grade 60 [420].
1.3 Plain bars, in sizes up to and including 2 ½ 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 A 706) or in SI units [Specification A 706M].
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.
TABLE 1 Deformed Bar Designation Numbers, Nominal Weights [Masses], Nominal Dimensions, and Deformation Requirements Bar
Desig-
nation
No.ANominal Weight, lb/ft [Nominal Mass, kg/m] Nominal DimensionsBDeformation Requirements, in. [mm] Diameter,
in. [mm] Cross-Sectional Area in. 2 [mm2] Perimeter,
in. [mm] Maximum Average Spacing Minimum Average Height Maximum Gap (Chord of 12.5 % of Nominal Perimeter) 3 [10] 0.376 [ 0.560] 0.375 [ 9.5] 0.11 [ 71] 1.178 [ 29.9] 0.262 [ 6.7] 0.015 [0.38] 0.143 [ 3.6...
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Contact ASTM International (www.astm.org) for the latest information
Designation: A 706/A 706M – 08a
Standard Specification for
Low-Alloy Steel Deformed and Plain Bars for Concrete
1
Reinforcement
This standard is issued under the fixed designationA 706/A 706M; 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* 1.7 The values stated in either inch-pound units or SI units
are to be regarded as standard. Within the text, the SI units are
1.1 General—This specification covers deformed and plain
shown in brackets. The values stated in each system are not
low-alloy steel bars in cut lengths or coils for concrete
exact equivalents; therefore, each system must be used inde-
reinforcement intended for applications where restrictive me-
pendentlyoftheother.Combiningvaluesfromthetwosystems
chanical properties and chemical composition are required for
may result in nonconformance with this specification.
compatibilitywithcontrolledtensilepropertyapplicationsorto
1.8 This standard does not purport to address all of the
enhance weldability. The standard sizes and dimensions of
safety concerns, if any, associated with its use. It is the
deformed bars and their number designations are given in
responsibility of the user of this standard to establish appro-
Table 1. The text of this specification references notes and
priate safety and health practices and determine the applica-
footnotes that provide explanatory material. These notes and
bility of regulatory limitations prior to use.
footnotes, excluding those in tables, shall not be considered as
requirements of this specification.
2. Referenced Documents
1.2 Grade—Bars are of a single minimum yield strength
2
2.1 ASTM Standards:
level: namely, 60 000 psi [420 MPa], designated as Grade 60
A 6/A 6M Specification for General Requirements for
[420].
1 Rolled Structural Steel Bars, Plates, Shapes, and Sheet
1.3 Plainbars,insizesuptoandincluding2 ⁄2in.[63.5mm]
Piling
in diameter in coils or cut lengths, when ordered, shall be
A 370 Test Methods and Definitions for MechanicalTesting
furnished under this specification. For ductility properties
of Steel Products
(elongation and bending), test provisions of the nearest smaller
A 510 Specification for General Requirements for Wire
nominal diameter deformed bar size shall apply.
Rods and Coarse Round Wire, Carbon Steel
1.4 Controlled Tensile Properties—Thisspecificationlimits
A 510M Specification for General Requirements for Wire
mechanical properties (Table 2) to provide the desired yield/
Rods and Coarse Round Wire, Carbon Steel (Metric)
tensile properties for controlled tensile property applications.
A 615/A 615M Specification for Deformed and Plain
1.5 Welding—This specification limits chemical composi-
Carbon-Steel Bars for Concrete Reinforcement
tion (6.2) and carbon equivalent (6.4) to enhance the weldabil-
A 700 Practices for Packaging, Marking, and Loading
ity of the material. When steel is to be welded, a welding
Methods for Steel Products for Shipment
procedure suitable for the chemical composition and intended
A 751 Test Methods, Practices, and Terminology for
use or service should be used. The use of the latest edition of
Chemical Analysis of Steel Products
AWS D1.4/D1.4M is recommended. This document describes
E29 Practice for Using Significant Digits in Test Data to
the proper selection of the filler metals, preheat/interpass
Determine Conformance with Specifications
temperatures, as well as, performance and procedure qualifi-
3
2.2 AWS Standard:
cation requirements.
AWS D1.4/D1.4M Structural Welding Code—Reinforcing
1.6 This specification is applicable for orders in either
Steel
inch-pound units (Specification A 706) or in SI units [Specifi-
cation A 706M].
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee Standards volume information, refer to the standard’s Document Summary page on
A01.05 on Steel Reinforcement. the ASTM website.
3
Current edition approved Oct. 1, 2008. Published October 2008. Originally Available from American Welding Society (AWS), 550 NW LeJeune Rd.,
approved in 1974. Last previous edition approved in 2008 as A 706/A 706M – 08. Miami, FL 33126, http://www.aws.org.
*ASummary 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, U
...
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:A 706/A 706M–08 Designation: A 706/A 706M – 08a
Standard Specification for
Low-Alloy Steel Deformed and Plain Bars for Concrete
1
Reinforcement
This standard is issued under the fixed designationA 706/A 706M; 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, 60 000 psi [420 MPa], designated as Grade 60 [420].
1
1.3 Plain rounds,bars, in sizes up to and including 2 ⁄2 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.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 A 706) or in SI units [Specification
A 706M].
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:
A 6/A 6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 510 Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel
A 510M Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel (Metric)
A 615/A 615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
A 700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Shipment
A 751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
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, 2008. Published MayOctober 2008. Originally approved in 1974. Last previous edition approved in 20062008 as A 706/
A 706M – 06a8.
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 standar
...
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:A 706/A 706M–08 Designation: A 706/A 706M – 08a
Standard Specification for
Low-Alloy Steel Deformed and Plain Bars for Concrete
1
Reinforcement
This standard is issued under the fixed designationA 706/A 706M; 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, 60 000 psi [420 MPa], designated as Grade 60 [420].
1
1.3 Plain rounds,bars, in sizes up to and including 2 ⁄2 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.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 A 706) or in SI units [Specification
A 706M].
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:
A 6/A 6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 510 Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel
A 510M Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel (Metric)
A 615/A 615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
A 700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Shipment
A 751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
E 29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
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, 2008. Published MayOctober 2008. Originally approved in 1974. Last previous edition approved in 20062008 as A 706/
A 706M – 06a8.
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 standa
...
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