ASTM A1035/A1035M-23
(Specification)Standard Specification for Deformed and Plain, Low-Carbon, Chromium, Steel Bars for Concrete Reinforcement
Standard Specification for Deformed and Plain, Low-Carbon, Chromium, Steel Bars for Concrete Reinforcement
ABSTRACT
This specification covers low-carbon, chromium, steel bars, deformed and plane for concrete reinforcement in cut lengths and coils. The bars shall be rolled from properly identified heats of mold cast or strand cast steel using the basic oxygen, electric-furnace, or open-hearth process. Heat analysis shall be performed wherein steel materials shall conform to required chemical compositions of carbon, chromium, manganese, nitrogen, phosphorus, sulfur, and silicon. Steel specimens shall also undergo deformations test, tensile test, and bend test. Steel specimens shall conform to required values of tensile strength, yield strength, stress, and elongation. Final products shall be marked by a tag.
SCOPE
1.1 This specification covers deformed and plain low-carbon, chromium, steel bars, in cut lengths and coils for concrete reinforcement. These bars are furnished in three alloy types depending on the chromium range content. The standard sizes and dimensions of deformed bars and their number designations are given in Table 1.2
1.2 Bars are of two minimum yield strength levels as defined in 9.2: namely, 100 000 psi [690 MPa], and 120 000 psi [830 MPa] designated as Grade 100 [690] and Grade 120 [830], respectively.
1.3 Bars are furnished to three different chemical compositions, designated as Alloy Type CL, CM, and CS. Chemical compositions are shown in Table 2.
1.4 Plain bars, in sizes up to and including 2.25 in. [57.2 mm] 21/2 in. [63.5 mm] in diameter in coils and cut lengths, when ordered shall be furnished under this specification in Grade 100 [690] and Grade 120 [830]. For ductility properties (elongation and bending), test provisions of the nearest smaller nominal diameter deformed bar size shall apply. Requirements providing for deformations and marking shall not be applicable.
Note 1: Welding of the material in this specification should be approached with caution since no specific provisions have been included to enhance its weldability. When this steel is to be welded, a welding procedure suitable for the chemical composition and intended use or service should be used.
Note 2: Designers need to be aware that design codes and specifications may not recognize the use of the No. 20 [64] bar, the largest bar size included in this specification. Structural members reinforced with No. 20 [64] bars may require approval of the building official or other appropriate authority and require special detailing to ensure adequate performance at service and factored loads.
1.5 Requirements for alternate bar sizes are presented in Annex A1. The requirements in Annex A1 only apply when specified by the purchaser (see 4.2.4).
1.6 A supplementary requirement (S1) is provided for use where bend testing of bar designation Nos. 14 and 18 [43, 57], and bar designation Nos. 40, 50, and 60 in Annex A1, is required by the purchaser. The supplementary requirement applies only when specified in the purchase order.
1.7 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.
1.8 This specification is applicable for orders in either inch-pound units (as Specification A1035) or in SI units (as Specification A1035M).
1.9 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 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 specification.
1.10 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...
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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: A1035/A1035M − 23
Standard Specification for
Deformed and Plain, Low-Carbon, Chromium, Steel Bars for
1
Concrete Reinforcement
This standard is issued under the fixed designation A1035/A1035M; 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.
procedure suitable for the chemical composition and intended use or
1. Scope*
service should be used.
1.1 This specification covers deformed and plain low-
NOTE 2—Designers need to be aware that design codes and specifica-
carbon, chromium, steel bars, in cut lengths and coils for
tions may not recognize the use of the No. 20 [64] bar, the largest bar size
included in this specification. Structural members reinforced with No. 20
concrete reinforcement. These bars are furnished in three alloy
[64] bars may require approval of the building official or other appropriate
types depending on the chromium range content. The standard
authority and require special detailing to ensure adequate performance at
sizes and dimensions of deformed bars and their number
service and factored loads.
2
designations are given in Table 1.
1.5 Requirements for alternate bar sizes are presented in
1.2 Bars are of two minimum yield strength levels as
Annex A1. The requirements in Annex A1 only apply when
defined in 9.2: namely, 100 000 psi [690 MPa], and 120 000 psi
specified by the purchaser (see 4.2.4).
[830 MPa] designated as Grade 100 [690] and Grade 120
1.6 A supplementary requirement (S1) is provided for use
[830], respectively.
where bend testing of bar designation Nos. 14 and 18 [43, 57],
1.3 Bars are furnished to three different chemical
and bar designation Nos. 40, 50, and 60 in Annex A1, is
compositions, designated as Alloy Type CL, CM, and CS.
required by the purchaser. The supplementary requirement
Chemical compositions are shown in Table 2.
applies only when specified in the purchase order.
1.4 Plain bars, in sizes up to and including 2.25 in.
1.7 The text of this specification references notes and
1
[57.2 mm] 2 ⁄2 in. [63.5 mm] in diameter in coils and cut
footnotes which provide explanatory material. These notes and
lengths, when ordered shall be furnished under this specifica-
footnotes (excluding those in tables and figures) shall not be
tion in Grade 100 [690] and Grade 120 [830]. For ductility
considered as requirements of the specification.
properties (elongation and bending), test provisions of the
1.8 This specification is applicable for orders in either
nearest smaller nominal diameter deformed bar size shall
inch-pound units (as Specification A1035) or in SI units (as
apply. Requirements providing for deformations and marking
Specification A1035M).
shall not be applicable.
NOTE 1—Welding of the material in this specification should be
1.9 The values stated in either inch-pound units or SI units
approached with caution since no specific provisions have been included
are to be regarded separately as standard. Within the text, the
to enhance its weldability. When this steel is to be welded, a welding
SI units are shown in brackets. The values stated in each
system may not be exact equivalents; therefore, each system
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
shall be used independently of the other. Combining values
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
from the two systems may result in non-conformance with the
A01.05 on Steel Reinforcement.
Current edition approved March 1, 2023. Published April 2023. Originally specification.
approved in 2004. Last previous edition approved in 2020 as A1035/A1035M – 20.
1.10 This international standard was developed in accor-
DOI: 10.1520/A1035_A1035M-23.
2
dance with internationally recognized principles on standard-
Commercial Metals Company has several patented materials (US Patents
#6,273,968, #6,709,534, #7,118,637, #7,214,278) that meet this specification.
ization established in the Decision on Principles for the
Interested parties are invited to submit information regarding the identification of an
Development of International Standards, Guides and Recom-
alternative(s) to this patented item to the ASTM International Headquarters. Your
mendations issued by the World Trade Organization Technical
comments will receive careful consideration at a meeting of the responsible
1
technical committee, which you may attend. Barriers to Trade (TBT) Committee.
*A Summary of Changes section appears at the end
...
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: A1035/A1035M − 20 A1035/A1035M − 23
Standard Specification for
Deformed and Plain, Low-Carbon, Chromium, Steel Bars for
1
Concrete Reinforcement
This standard is issued under the fixed designation A1035/A1035M; 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.
1. Scope*
1.1 This specification covers deformed and plain low-carbon, chromium, steel bars, in cut lengths and coils for concrete
reinforcement. These bars are furnished in three alloy types depending on the chromium range content. The standard sizes and
2
dimensions of deformed bars and their number designations are given in Table 1.
1.2 Bars are of two minimum yield strength levels as defined in 9.2: namely, 100 000 psi [690 MPa], and 120 000 psi [830 MPa]
designated as Grade 100 [690] and Grade 120 [830], respectively.
1.3 Bars are furnished to three different chemical compositions, designated as Alloy Type CL, CM, and CS. Chemical
compositions are shown in Table 2.
1
1.4 Plain bars, in sizes up to and including 2.25 in. [57.2 mm] [57.2 mm] 2 ⁄2 in. in. [63.5 mm] in diameter in coils and cut lengths,
when ordered shall be furnished under this specification in Grade 100 [690] and Grade 120 [830]. For ductility properties
(elongation and bending), test provisions of the nearest smaller nominal diameter deformed bar size shall apply. Requirements
providing for deformations and marking shall not be applicable.
NOTE 1—Welding of the material in this specification should be approached with caution since no specific provisions have been included to enhance its
weldability. When this steel is to be welded, a welding procedure suitable for the chemical composition and intended use or service should be used.
NOTE 2—Designers need to be aware that design codes and specifications may not recognize the use of the No. 20 [64] bar, the largest bar size included
in this specification. Structural members reinforced with No. 20 [64] bars may require approval of the building official or other appropriate authority and
require special detailing to ensure adequate performance at service and factored loads.
1.5 Requirements for alternate bar sizes are presented in Annex A1. The requirements in Annex A1 only apply when specified by
the purchaser (see 4.2.4).
1.6 A supplementary requirement (S1) is provided for use where bend testing of bar designation Nos. 14 and 18 [43, 57], and bar
designation Nos. 40, 50, and 60 in Annex A1, is required by the purchaser. The supplementary requirement applies only when
specified in the purchase order.
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 A01.05
on Steel Reinforcement.
Current edition approved June 1, 2020March 1, 2023. Published June 2020April 2023. Originally approved in 2004. Last previous edition approved in 20192020 as
A1035/A1035M – 19.A1035/A1035M – 20. DOI: 10.1520/A1035_A1035M-20.10.1520/A1035_A1035M-23.
2
Commercial Metals Company has several patented materials (US Patents #6,273,968, #6,709,534, #7,118,637, #7,214,278) that meet this specification. Interested parties
are invited to submit information regarding the identification of an alternative(s) to this patented item to the ASTM International Headquarters. Your comments will receive
1
careful consideration at a meeting of the responsible technical committee, which you may attend.
*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 ----------------------
A1035/A1035M − 23
TABLE 1 Deformed Bar Designation Numbers, Nominal Weights [Masses], Nominal Dimensions, and Deformation Requirements
A
Nominal Dimensions Deformation Requirements, in. [mm]
Maximum Gap
Bar Designation Nominal Weight, lb/ft
Cross-Sectional Maximum Minimum (Chord of 12.5 %
Diameter, Perimeter
No. [Nominal Mass, kg/m]
Area, Average Average of
in. [mm] in. [mm]
2 2
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.
...
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: A1035/A1035M − 23
Standard Specification for
Deformed and Plain, Low-Carbon, Chromium, Steel Bars for
1
Concrete Reinforcement
This standard is issued under the fixed designation A1035/A1035M; 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.
procedure suitable for the chemical composition and intended use or
1. Scope*
service should be used.
1.1 This specification covers deformed and plain low-
NOTE 2—Designers need to be aware that design codes and specifica-
carbon, chromium, steel bars, in cut lengths and coils for
tions may not recognize the use of the No. 20 [64] bar, the largest bar size
included in this specification. Structural members reinforced with No. 20
concrete reinforcement. These bars are furnished in three alloy
[64] bars may require approval of the building official or other appropriate
types depending on the chromium range content. The standard
authority and require special detailing to ensure adequate performance at
sizes and dimensions of deformed bars and their number
service and factored loads.
2
designations are given in Table 1.
1.5 Requirements for alternate bar sizes are presented in
1.2 Bars are of two minimum yield strength levels as
Annex A1. The requirements in Annex A1 only apply when
defined in 9.2: namely, 100 000 psi [690 MPa], and 120 000 psi
specified by the purchaser (see 4.2.4).
[830 MPa] designated as Grade 100 [690] and Grade 120
1.6 A supplementary requirement (S1) is provided for use
[830], respectively.
where bend testing of bar designation Nos. 14 and 18 [43, 57],
1.3 Bars are furnished to three different chemical
and bar designation Nos. 40, 50, and 60 in Annex A1, is
compositions, designated as Alloy Type CL, CM, and CS.
required by the purchaser. The supplementary requirement
Chemical compositions are shown in Table 2.
applies only when specified in the purchase order.
1.4 Plain bars, in sizes up to and including 2.25 in.
1.7 The text of this specification references notes and
1
[57.2 mm] 2 ⁄2 in. [63.5 mm] in diameter in coils and cut
footnotes which provide explanatory material. These notes and
lengths, when ordered shall be furnished under this specifica-
footnotes (excluding those in tables and figures) shall not be
tion in Grade 100 [690] and Grade 120 [830]. For ductility
considered as requirements of the specification.
properties (elongation and bending), test provisions of the
1.8 This specification is applicable for orders in either
nearest smaller nominal diameter deformed bar size shall
inch-pound units (as Specification A1035) or in SI units (as
apply. Requirements providing for deformations and marking
Specification A1035M).
shall not be applicable.
NOTE 1—Welding of the material in this specification should be
1.9 The values stated in either inch-pound units or SI units
approached with caution since no specific provisions have been included
are to be regarded separately as standard. Within the text, the
to enhance its weldability. When this steel is to be welded, a welding
SI units are shown in brackets. The values stated in each
system may not be exact equivalents; therefore, each system
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
shall be used independently of the other. Combining values
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
from the two systems may result in non-conformance with the
A01.05 on Steel Reinforcement.
specification.
Current edition approved March 1, 2023. Published April 2023. Originally
approved in 2004. Last previous edition approved in 2020 as A1035/A1035M – 20.
1.10 This international standard was developed in accor-
DOI: 10.1520/A1035_A1035M-23.
2
dance with internationally recognized principles on standard-
Commercial Metals Company has several patented materials (US Patents
#6,273,968, #6,709,534, #7,118,637, #7,214,278) that meet this specification.
ization established in the Decision on Principles for the
Interested parties are invited to submit information regarding the identification of an
Development of International Standards, Guides and Recom-
alternative(s) to this patented item to the ASTM International Headquarters. Your
mendations issued by the World Trade Organization Technical
comments will receive careful consideration at a meeting of the responsible
1
technical committee, which you may attend. Barriers to Trade (TBT) Committee.
*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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