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ASTM A767/A767M-16

(Specification)

Standard Specification for Zinc-Coated (Galvanized) Steel Bars for Concrete Reinforcement

Standard Specification for Zinc-Coated (Galvanized) Steel Bars for Concrete Reinforcement

ABSTRACT
This specification covers steel reinforcing bars with protective zinc coatings applied by dipping the properly prepared reinforcing bars into a molten bath of zinc. Galvanization shall be used to prepare reinforcing bars. The galvanizer shall be permitted to subject the newly coated steel reinforcing bars to air or steam wiping to remove excess zinc from the bars. The mass of zinc coating shall conform to specified requirements. The mass of the coating shall be determined by magnetic thickness gage measurements. Stripping method, weighing before and after galvanizing, and microscopy method shall be used to referee the results obtained by magnetic thickness measurements. A retest shall be provided if the average zinc coating mass fails to meet the requirements. The galvanized coating shall be chromate treated.
SCOPE
1.1 This specification covers steel reinforcing bars with protective zinc coatings applied by immersing the properly prepared reinforcing bars into a molten bath of zinc.  
Note 1: The galvanizer is identified throughout this specification as the manufacturer.  
1.2 Guidelines for construction practices at the job-site are presented in Appendix X1.  
1.3 Guidelines for use of zinc-coated (galvanized) reinforcing bars with non-galvanized steel forms are presented in Appendix X2.  
1.4 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables) shall not be considered as requirements of the specification.  
1.5 This specification is applicable for orders in either inch-pound units (as Specification A767) or SI units (as Specification A767M).  
1.6 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 this specification.

General Information

Status
Historical
Publication Date
31-Aug-2016
ICS
77.140.15 - Steels for reinforcement of concrete
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.05 - Steel Reinforcement
Current Stage
Ref Project

Relations

Replaces
ASTM A767/A767M-09(2015) - Standard Specification for Zinc-Coated (Galvanized) Steel Bars for Concrete Reinforcement
Effective Date
01-Sep-2016
Referred By
ASTM C1776/C1776M-17(2022) - Standard Specification for Wet-Cast Precast Modular Retaining Wall Units
Effective Date
01-Sep-2016

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ASTM A767/A767M-16 - Standard Specification for Zinc-Coated (Galvanized) Steel Bars for Concrete ReinforcementASTM A767/A767M-16 - Standard Specification for Zinc-Coated (Galvanized) Steel Bars for Concrete Reinforcement
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REDLINE ASTM A767/A767M-16 - Standard Specification for Zinc-Coated (Galvanized) Steel Bars for Concrete ReinforcementREDLINE ASTM A767/A767M-16 - Standard Specification for Zinc-Coated (Galvanized) Steel Bars for Concrete Reinforcement
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Standards Content (Sample)

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:A767/A767M −16
Standard Specification for
Zinc-Coated (Galvanized) Steel Bars for Concrete
1
Reinforcement
This standard is issued under the fixed designationA767/A767M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber 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* 2. Referenced Documents
2
1.1 This specification covers steel reinforcing bars with
2.1 ASTM Standards:
protective zinc coatings applied by immersing the properly
A90/A90MTest Method for Weight [Mass] of Coating on
prepared reinforcing bars into a molten bath of zinc.
Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
A615/A615MSpecificationforDeformedandPlainCarbon-
NOTE 1—The galvanizer is identified throughout this specification as
Steel Bars for Concrete Reinforcement
the manufacturer.
A706/A706MSpecification for Deformed and Plain Low-
1.2 Guidelines for construction practices at the job-site are
Alloy Steel Bars for Concrete Reinforcement
presented in Appendix X1.
A780/A780MPracticeforRepairofDamagedandUncoated
1.3 Guidelines for use of zinc-coated (galvanized) reinforc-
Areas of Hot-Dip Galvanized Coatings
ing bars with non-galvanized steel forms are presented in
A996/A996MSpecification for Rail-Steel and Axle-Steel
Appendix X2.
Deformed Bars for Concrete Reinforcement
B6Specification for Zinc
1.4 The text of this specification references notes and
B487Test Method for Measurement of Metal and Oxide
footnotes which provide explanatory material.These notes and
Coating Thickness by Microscopical Examination of
footnotes (excluding those in tables) shall not be considered as
requirements of the specification. Cross Section
E376 Practice for Measuring Coating Thickness by
1.5 This specification is applicable for orders in either
Magnetic-Field or Eddy-Current (Electromagnetic) Test-
inch-pound units (as Specification A767) or SI units (as
ing Methods
Specification A767M).
3
2.2 ACI Standard:
1.6 The values stated in either inch-pound units or SI units
ACI301Specifications for Structural Concrete
are to be regarded separately as standard. Within the text, the
4
SI units are shown in brackets. The values stated in each 2.3 AWS Standard:
system may not be exact equivalents. Therefore, each system AWSD1.4⁄D1.4MStructural Welding Code—Reinforcing
shall be used independently of the other. Combining values
Steel
from the two systems may result in non-conformance with this
specification.
3. Terminology
1.7 This international standard was developed in accor-
3.1 Definition of Term Specific to This Specification:
dance with internationally recognized principles on standard-
3.1.1 lot, n—all bars of one size furnished to the same steel
ization established in the Decision on Principles for the
reinforcing bar specification that have been coated within a
Development of International Standards, Guides and Recom-
single production shift.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
2
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
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel, Standards volume information, refer to the standard’s Document Summary page on
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee the ASTM website.
3
A01.05 on Steel Reinforcement. AvailablefromAmericanConcreteInstitute(ACI),P.O.Box9094,Farmington
Current edition approved Sept. 1, 2016. Published September 2016. Originally Hills, MI 48333-9094, http://www.concrete.org.
4
approved in 1979. Last previous edition approved in 2015 as A767/A767M–09 Available from American Welding Society (AWS), 8669 NW 36 St., #130,
(2015). DOI: 10.1520/A0767_A0767M-16. Miami, FL 33166-6672, http://www.aws.org.
*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 ----------------------
A767/A767M−16
4. Ordering Information 6.5 Class of Coating Thickness and Equivalent Weight
[Mass]:
4.1 Orders for zinc-coated (galvanized) bars for concrete
6.5.1 This specification includes two classes of zinc coating
reinforcement under this specification shall include the follow-
thickness and corresponding equivalent weight [mass]. The
ing information:
equivalent weight [mass] of zinc coating on the bar shall
4.1.1 Specification for reinforcing bars to be coated (ASTM
conform to the requirements in Tab
...

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: A767/A767M − 09 (Reapproved 2015) A767/A767M − 16
Standard Specification for
Zinc-Coated (Galvanized) Steel Bars for Concrete
1
Reinforcement
This standard is issued under the fixed designation A767/A767M; 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 Scope*
1.1 This specification covers steel reinforcing bars with protective zinc coatings applied by dippingimmersing the properly
prepared reinforcing bars into a molten bath of zinc.
NOTE 1—The galvanizer is identified throughout this specification as the manufacturer.
1.2 Guidelines for construction practices at the job-site are presented in Appendix X1.
1.3 Guidelines for use of zinc-coated (galvanized) reinforcing bars with non-galvanized steel forms are presented in Appendix
X2.
1.4 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes
(excluding those in tables) shall not be considered as requirements of the specification.
1.5 This specification is applicable for orders in either inch-pound units (as Specification A767) or SI units (as Specification
A767M).
1.6 The values stated in either SI or inch-pound units or SI units are to be regarded separately as standard. Within the text, the
inch-poundSI units are shown in brackets. The values stated in each system aremay not be exact equivalents. Therefore, each
system mustshall be used independently of the other. Combining values from the two systems may result in nonconformancenon-
conformance with this specification.
2. Referenced Documents
2
2.1 ASTM Standards:
A90/A90M Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
A615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
A706/A706M Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement
A780/A780M Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings
A996/A996M Specification for Rail-Steel and Axle-Steel Deformed Bars for Concrete Reinforcement
B6 Specification for Zinc
B487 Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section
E376 Practice for Measuring Coating Thickness by Magnetic-Field or Eddy-Current (Electromagnetic) Testing Methods
3
2.2 ACI Specification:Standard:
ACI 301 Specifications for Structural Concrete
4
2.3 AWS Standard:
AWS D1.4 ⁄D1.4M Structural Welding Code—Reinforcing Steel
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 Nov. 15, 2015Sept. 1, 2016. Published November 2015September 2016. Originally approved in 1979. Last previous edition approved in
20092015 as A767/A767M – 09.A767/A767M – 09 (2015). DOI: 10.1520/A0767_A0767M-09R15.10.1520/A0767_A0767M-16.
2
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 the ASTM website.
3
Available from American Concrete Institute (ACI), P.O. Box 9094, Farmington Hills, MI 48333-9094, http://www.concrete.org.
4
Available from American Welding Society (AWS), 8669 NW 36 St., #130, Miami, FL 33166-6672, http://www.aws.org.
*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 ----------------------
A767/A767M − 16
3. Terminology
3.1 Definition of Term Specific to This Specification:
3.1.1 lot, n—all bars of one size furnished to the same steel reinforcing bar specification that have been coated within a single
production shift.
4. Ordering Information
4.1 It shall be the responsibility of the purchaser to specify all requirements that are necessary for material ordered to this
specification. Such requirements shall include, but are not limited to, the following: Orders for zinc-coated (galvanized) bars for
concrete reinforcement under this specification shall
...

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1.8 This specification is applicable for orders in either inch-pound units (as Specification A934) or SI [metric] units [as Specification A934M].  
1.9 The values stated in either inch-pound units or SI 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.  
1.10 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.11 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.

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ASTM
ASTM A775/A775M-22(Specification)
Standard Specification for Epoxy-Coated Steel Reinforcing Bars

ABSTRACT
This specification covers deformed and plain steel reinforcing bars with protective epoxy coating applied by the electrostatic spray method. The surface of the steel reinforcing bars to be coated shall be cleaned by abrasive blast cleaning to near-white metal. The number and frequency of tests for coating thickness, continuity, flexibility and adhesion are specified. If the specimen for coating thickness or flexibility fails to meet the specified requirements, two retests on random samples shall be conducted for each failed test.
SCOPE
1.1 This specification covers deformed and plain steel reinforcing bars with protective epoxy coating applied by the electrostatic spray method.
Note 1: The coating applicator is identified throughout this specification as the manufacturer.  
1.2 Other organic coatings may be used provided they meet the requirements of this specification.  
1.3 Requirements for coatings are contained in Annex A1.  
1.4 Requirements for patching material are contained in Annex A2.  
1.5 Guidelines for construction practices at the job-site are presented in Appendix X1.  
1.6 This specification is applicable for orders in either inch-pound units (as Specification A775) or SI units [as Specification A775M].  
1.7 The values stated in either inch-pound units or SI 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.  
1.8 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.9 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.

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ASTM
ASTM A615/A615M-22(Specification)
Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement

ABSTRACT
This specification covers deformed and plain carbon-steel bars for concrete reinforcements in cut lengths and coils. Materials considered under this specification are available in Grades 40 [280], 60 [420] and 75 [520]. Steel samples shall be rolled from properly identified heats of mold cast or strand cast steel using electric-furnace, basic-oxygen, or open-hearth. Heat analysis shall be performed wherein steel materials shall conform to required compositions of carbon, manganese, phosphorus and sulfur. Steel specimens shall also undergo tensile tests and shall conform to required values of tensile strength, yield strength, and elongation. Steel samples shall also undergo deformation test, tension test and bend tests. Final products shall be marked by a tag.
SCOPE
1.1 This specification covers deformed and plain carbon-steel bars in cut lengths and coils for concrete reinforcement. Annex A2 of this specification covers deformed bars for use for other applications. Steel bars containing alloy additions, such as with the Association for Iron and Steel Technology and the Society of Automotive Engineers series of alloy steels, are permitted if the resulting product meets all the other requirements of this specification. The standard sizes and dimensions of deformed bars and their number designations are given in Table 1.    
1.2 Unless specified for use for other applications in Annex A2, bars are of four minimum yield strength levels: namely, 40 000 psi [280 MPa], 60 000 psi [420 MPa], 80 000 psi [550 MPa], and 100 000 psi [690 MPa], designated as Grade 40 [280], Grade 60 [420], Grade 80 [550], and Grade 100 [690], respectively.
Note 1: Grade 100 [690] reinforcing bars were introduced in this specification in 2015. In contrast to the lower grades, which have ratios of specified tensile strength to specified yield strength that range from 1.25 to 1.50, Grade 100 [690] reinforcing bars have a ratio of specified tensile 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 reduced warning of failure following yielding when Grade 100 [690] bars are used in structural members where strength is governed by the tensile 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 for Grade 100 [690], users of this specification should be aware that ACI 318 Type 1 mechanical and welded splice requirements found in many acceptance criteria of 125 % of specified yield strength requirements in tension and compression are not applicable to Grade 100 [690]. Mechanical and welded splices should meet a minimum specified tensile strength of 115 000 psi [790 MPa] for Grade 100 [690].
Note 2: Users of this specification need to be aware that consensus design codes and specifications may not recognize the use of the No. 20 [64] bar, the largest bar 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.  
1.3 Plain bars, in sizes up to and including 21/2 in. [63.5 mm] in diameter in coils or cut lengths, when ordered shall be furnished under this specification in Grade 40 [280], Grade 60 [420], Grade 80 [550], and Grade 100 [690]. 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 3: 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. T...

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ASTM
ASTM A421/A421M-21(Specification)
Standard Specification for Stress-Relieved Steel Wire for Prestressed Concrete

ABSTRACT
This specification covers two types of uncoated stress-relieved round high-carbon steel wire commonly used in prestressed linear concrete construction. These two types are the type BA used for applications in which cold-end deformation is used for anchoring purposes and type WA wire which is used for application in which the ends are anchored by wedges, no cold-end deformation of the wire is involved. Required tensile strength, yield strength, and elongation shall be evaluated using stress-relaxation test. Heat analysis shall be used to determine the percentage of specified elements especially sulfur and phosphorus to meet the required chemical composition.
SCOPE
1.1 This specification covers two types of stress-relieved round high-carbon steel wire used in prestressed concrete construction, as follows:  
1.1.1 Type BA wire is used for applications in which cold-end deformation is used for anchoring purposes (Button Anchorage), and  
1.1.2 Type WA wire is used for application in which the ends are anchored by wedges, and no cold-end deformation of the wire is involved (Wedge Anchorage).  
1.2 A supplementary requirement (S1) is provided for use where low-relaxation wire and relaxation testing for that product is required by the purchaser. The supplementary requirement applies only when specified in the purchase order or contract.  
1.3 This specification is applicable for orders in either inch-pounds units (as Specification A421) or in SI units (as Specification A421M).  
1.4 The values stated in either inch-pound 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.  
1.5 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables) shall not be considered as requirements of the specification.  
1.6 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.

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