ASTM A615/A615M-22

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: A615/A615M −22 American Association State Highway and
Transportation Officials Standard
AASHTO No.: M 31
Standard Specification for
Deformed and Plain Carbon-Steel Bars for Concrete
Reinforcement
This standard is issued under the fixed designationA615/A615M; 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.
design codes and specifications may not recognize the use of the No. 20
1. Scope*
[64] bar, the largest bar included in this specification. Structural members
1.1 This specification covers deformed and plain carbon-
reinforced with No. 20 [64] bars may require approval of the building
steel bars in cut lengths and coils for concrete reinforcement. official or other appropriate authority and require special detailing to
ensure adequate performance at service and factored loads.
AnnexA2ofthisspecificationcoversdeformedbarsforusefor
other applications. Steel bars containing alloy additions, such 1
1.3 Plainbars,insizesuptoandincluding2 ⁄2in.[63.5mm]
as with the Association for Iron and Steel Technology and the
in diameter in coils or cut lengths, when ordered shall be
Society of Automotive Engineers series of alloy steels, are
furnished under this specification in Grade 40 [280], Grade 60
permitted if the resulting product meets all the other require-
[420], Grade 80 [550], and Grade 100 [690]. For ductility
ments of this specification. The standard sizes and dimensions
properties (elongation and bending), test provisions of the
of deformed bars and their number designations are given in
nearest smaller nominal diameter deformed bar size shall
Table 1.
apply. Requirements providing for deformations and marking
shall not be applicable.
1.2 Unless specified for use for other applications in Annex
A2, bars are of four minimum yield strength levels: namely,
NOTE 3—Welding of the material in this specification should be
40 000 psi [280 MPa], 60 000 psi [420 MPa], 80 000 psi [550
approached with caution since no specific provisions have been included
MPa], and 100 000 psi [690 MPa], designated as Grade 40 to enhance its weldability. When this steel is to be welded, a welding
procedure suitable for the chemical composition and intended use or
[280], Grade 60 [420], Grade 80 [550], and Grade 100 [690],
service should be used. The use of the latest edition ofAWS D1.4 ⁄D1.4M
respectively.
is recommended. The AWS D1.4 ⁄D1.4M Welding Code describes the
proper selection of the filler metals and preheat/interpass temperatures, as
NOTE 1—Grade 100 [690] reinforcing bars were introduced in this
specification in 2015. In contrast to the lower grades, which have ratios of well as performance and procedure qualification requirements.
specified tensile strength to specified yield strength that range from 1.25
1.4 Requirements for alternate bar sizes are presented in
to 1.50, Grade 100 [690] reinforcing bars have a ratio of specified tensile
Annex A1. The requirements in Annex A1 only apply when
strength to specified yield strength of 1.15. Users of this specification
should be aware that there will, therefore, be a lower margin of safety and specified by the purchaser (see 4.2.4).
reduced warning of failure following yielding when Grade 100 [690] bars
1.5 The text of this specification references notes and
are used in structural members where strength is governed by the tensile
footnotes which provide explanatory material. These notes and
strength of the reinforcement, primarily in beams and slabs.As a result of
the lower specified tensile strength to specified yield strength ratio of 1.15
footnotes (excluding those in tables) shall not be considered as
for Grade 100 [690], users of this specification should be aware that ACI
requirements of the specification.
318 Type 1 mechanical and welded splice requirements found in many
acceptance criteria of 125 % of specified yield strength requirements in
1.6 This specification is applicable for orders in either
tension and compression are not applicable to Grade 100 [690]. Mechani-
inch-pound units (as Specification A615) or in SI units (as
cal and welded splices should meet a minimum specified tensile strength
Specification A615M).
of 115 000 psi [790 MPa] for Grade 100 [690].
NOTE 2—Users of this specification need to be aware that consensus
1.7 The values stated in either inch-pound units or SI units
are to be regarded separately as standard. Within the text, the
SI units are shown in brackets. The values stated in each
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
system may not be exact equivalents; therefore, each system
A01.05 on Steel Reinforcement.
shall be used independently of the other. Combining values
Current edition approved July 1, 2022. Published July 2022. Originally approved
from the two systems may result in non-conformance with the
in 1968. Last previous edition approved in 2020 as A615/A615M – 20. DOI:
10.1520/A0615_A0615M-22. specification.
*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
A615/A615M − 22
TABLE 1 Deformed Bar Designation Numbers, Nominal Weights [Masses], Nominal Dimensions, and Deformation Requirements
A
Nominal Dimensions Deformation Requirements, in. [mm]
Nominal Weight,
Bar Designation lb/ft
Cross-Sectional Maximum Minimum Maximum Gap
Diameter, Perimeter,
No. [Nominal Mass,
Area, Average Average (Chord of 12.5 % of
in. [mm] in. [mm]
2 2
kg/m]
in. [mm ] Spacing Height 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]
4 [13] 0.668 [0.994] 0.500 [12.7] 0.20 [129] 1.571 [39.9] 0.350 [8.9] 0.020 [0.51] 0.191 [4.9]
5 [16] 1.043 [1.552] 0.625 [15.9] 0.31 [199] 1.963 [49.9] 0.437 [11.1] 0.028 [0.71] 0.239 [6.1]
6 [19] 1.502 [2.235] 0.750 [19.1] 0.44 [284] 2.356 [59.8] 0.525 [13.3] 0.038 [0.97] 0.286 [7.3]
7 [22] 2.044 [3.042] 0.875 [22.2] 0.60 [387] 2.749 [69.8] 0.612 [15.5] 0.044 [1.12] 0.334 [8.5]
8 [25] 2.670 [3.973] 1.000 [25.4] 0.79 [510] 3.142 [79.8] 0.700 [17.8] 0.050 [1.27] 0.383 [9.7]
9 [29] 3.400 [5.060] 1.128 [28.7] 1.00 [645] 3.544 [90.0] 0.790 [20.1] 0.056 [1.42] 0.431 [10.9]
10 [32] 4.303 [6.404] 1.270 [32.3] 1.27 [819] 3.990 [101.3] 0.889 [22.6] 0.064 [1.63] 0.487 [12.4]
11 [36] 5.313 [7.907] 1.410 [35.8] 1.56 [1006] 4.430 [112.5] 0.987 [25.1] 0.071 [1.80] 0.540 [13.7]
14 [43] 7.65 [11.38] 1.693 [43.0] 2.25 [1452] 5.32 [135.1] 1.185 [30.1] 0.085 [2.16] 0.648 [16.5]
18 [57] 13.60 [20.24] 2.257 [57.3] 4.00 [2581] 7.09 [180.1] 1.58 [40.1] 0.102 [2.59] 0.864 [21.9]
B
20 [64] 16.69 [24.84] 2.500 [63.5] 4.91 [3167] 7.85 [199.5] 1.75 [44.5] 0.113 [2.86] 0.957 [24.3]
A
The nominal dimensions of a deformed bar are equivalent to those of a plain round bar having the same weight [mass] per foot [metre] as the deformed bar.
B
Refer to Note 2.
1.8 This standard does not purport to address all of the 2.3 AWS Standard:
safety concerns, if any, associated with its use. It is the AWS D1.4⁄D1.4M Structural Welding Code—Reinforcing
responsibility of the user of this standard to establish appro- Steel
priate safety, health, and environmental practices and deter-
2.4 U.S. Military Standard:
mine the applicability of regulatory limitations prior to use.
MIL-STD-129 Marking for Shipment and Storage
1.9 This international standard was developed in accor-
2.5 U.S. Federal Standard:
dance with internationally recognized principles on standard-
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
3. Terminology
mendations issued by the World Trade Organization Technical
3.1 Definitions of Terms Specific to This Specification:
Barriers to Trade (TBT) Committee.
3.1.1 deformations, n—transverse protrusions on a de-
formed bar.
2. Referenced Documents
3.1.2 deformed bar, n—steel bar with protrusions; a bar that
2.1 ASTM Standards:
is intended for use as reinforcement in reinforced concrete
A6/A6M Specification for General Requirements for Rolled
construction.
Structural Steel Bars, Plates, Shapes, and Sheet Piling
3.1.2.1 Discussion—The surface of the bar is provided with
A370 Test Methods and Definitions for Mechanical Testing
protrusions that inhibit longitudinal movement of the bar
of Steel Products
relative to the concrete surrounding the bar in such construc-
A510/A510M Specification for General Requirements for
tion. The protrusions conform to the provisions of this speci-
Wire Rods and Coarse Round Wire, Carbon Steel, and
fication.
Alloy Steel
3.1.3 plain bar, n—steel bar without protrusions.
A700 Guide for Packaging, Marking, and Loading Methods
for Steel Products for Shipment
3.1.4 rib, n—longitudinal protrusion on a deformed bar.
A706/A706M Specification for Deformed and Plain Low-
Alloy Steel Bars for Concrete Reinforcement
4. Ordering Information
A751 Test Methods and Practices for Chemical Analysis of
4.1 Orders for carbon-steel bars for concrete reinforcement
Steel Products
under this specification shall contain the following informa-
E29 Practice for Using Significant Digits in Test Data to
tion:
Determine Conformance with Specifications
4.1.1 Quantity (weight) [mass],
E290 Test Methods for Bend Testing of Material for Ductil-
4.1.2 Deformed or plain,
ity
4.1.3 Bar designation number (size) of deformed bars, or
2.2 ACI Standard:
nominal diameter (size) of plain bars
ACI 318 Building Code Requirements for Structural Con-
4.1.4 Cut lengths or coils,
crete
4.1.5 Grade, and
4.1.6 ASTM designation A615 [A615M] and year of issue.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on Available from American Welding Society (AWS), 8669 NW 36 St., #130,
the ASTM website. Miami, FL 33166-6672, http://www.aws.org.
3 5
Available from American Concrete Institute (ACI), 38800 Country Club Dr., Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
Farmington Hills, MI 48331-3439, http://www.concrete.org. Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
A615/A615M − 22
4.2 Thepurchasershallhavetheoptiontospecifyadditional 7.4 The overall length of deformations shall be such that the
requirements, including but not limited to, the following: gap (measured as a chord) between the ends of the deforma-
4.2.1 Requirements for inspection (17.1), tions shall not exceed 12.5 % of the nominal perimeter of the
4.2.2 Require bars in each bundle to be supplied from a bar.Where the ends terminate in a rib, the width of the rib shall
single heat (19.1), be considered as the gap between these ends. The summation
4.2.3 Special package marking requirements (20.2), of the gaps shall not exceed 25 % of the nominal perimeter of
4.2.4 Requirements for alternative bar sizes in Annex A1, the bar.The nominal perimeter of the bar shall be 3.1416 times
4.2.5 Requirements for bars for other applications in Annex the nominal diameter.
A2, and
7.5 The spacing, height, and gap of deformations shall
4.2.6 Other special requirements, if any.
conform to the requirements prescribed in Table 1.
5. Material and Manufacture
8. Measurements of Deformations
5.1 The bars shall be rolled from properly identified heats of
8.1 The average spacing of deformations shall be deter-
mold-cast or strand-cast steel. The steel shall be made by any
minedbymeasuringthelengthofaminimumoftenspacesand
commercially accepted process.
dividing that length by the number of spaces included in the
6. Chemical Composition measurement. The measurement shall begin from a point on a
deformation at the beginning of the first space to a correspond-
6.1 The chemical analysis of each heat of steel shall be
ing point on a deformation after the last included space.
determined in accordance with Test Methods, Practices, and
Spacing measurements shall not be made over a bar area
Terminology A751. The manufacturer shall make the analysis
containing bar marking symbols involving letters or numbers.
on test samples taken preferably during the pouring of the heat.
The percentages of carbon, manganese, phosphorus, and sulfur
8.2 The average height of deformations shall be determined
shall be determined. The phosphorus content thus determined
from measurements made on not less than two typical defor-
shall not exceed 0.06 %.
mations. Determinations shall be based on three measurements
per deformation, one at the center of the overall length and the
6.2 Aproduct check, for phosphorus, made by the purchaser
other two at the quarter points of the overall length.
shall not exceed that specified in 6.1 by more than 25 %.
8.3 Insufficient height, insufficient circumferential
7. Requirements for Deformations
coverage, or excessive spacing of deformations shall not
7.1 Deformations shall be spaced along the bar at substan-
constitute cause for rejection unless it has been clearly estab-
tially uniform distances.The deformations on opposite sides of
lishedbydeterminationsoneachlot(Note4)testedthattypical
the bar shall be similar in size, shape, and pattern.
deformation height, gap, or spacing do not conform to the
minimum requirements prescribed in Section 7. No rejection
7.2 Thedeformationsshallbeplacedwithrespecttotheaxis
shall be made on the basis of measurements if fewer than ten
of the bar so that the included angle is not less than 45°.Where
adjacent deformations on each side of the bar are measured.
the line of deformations forms an included angle with the axis
of the bar from 45 to 70° inclusive, the deformations shall
NOTE 4—As used within the intent of 8.3, the term “lot” shall mean all
alternately reverse in direction on each side, or those on one
the bars of one bar size and pattern of deformations contained in an
individual shipping release or shipping order.
side shall be reversed in direction from those on the opposite
side. Where the line of deformations is over 70°, a reversal in
9. Tensile Requirements
direction shall not be required.
7.3 The average spacing or distance betwee
...