ASTM A706/A706M-22a
Standard Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement

Standard No.

ASTM A706/A706M-22a

Release Date

2022

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM A706/A706M-22a

Scope

1.1 General—This specification covers deformed and plain low-alloy steel bars in cut lengths and 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. 1.2 Grade—Bars are of three minimum yield strength levels: namely, 60 000 psi [420 MPa], 80 000 psi [550 MPa], and 100 000 psi [690 MPa] designated as Grade 60 [420], Grade 80 [550], and Grade 100 [690], respectively. 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. 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. 1.4 Controlled Tensile Properties—This specification limits tensile 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 this 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. The AWS D1.4/D1.4M Welding Code describes the proper selection of the filler metals, preheat/interpass temperatures, as well as, performance and procedure qualification requirements. NOTE 1—As a result of the 117 000 psi minimum tensile strength for Grade 100 [690], users of this specification should be aware that ACI 318 Type 1 mechanical splice requirements of 125 % of specified yield strength requirements in tension and compression, found in many acceptance criteria, may result in an invalid mechanical splice qualification or verification test when the tensile strength of the bar is between 117 000 psi and 125 000 psi. 1.6 Annex A2 describes the methods for determination of uniform elongation (Elu). Annex A2 is mandatory when Supplementary Requirement S1 is specified by the purchaser (see 4.2.6). 1.7 Requirements for alternate bar sizes are presented in Annex A1. The requirements in Annex A1 only apply when specified by the purchaser (see 4.2.5). 1.8 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. 1.9 This specification is applicable for orders in either inch-pound units (Specification A706) or in SI units [Specification A706M]. 1.10 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. 1.11 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. 1.12 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. 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 Dec. 1, 2022. Published February 2023. Originally approved in 1974. Last previous edition approved in 2022 as A706/A706M – 22. DOI: 10.1520/A0706_A0706M-22A. *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 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. 

ASTM A706/A706M-22a Referenced Document

• ASTM A370 Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• ASTM A510/A510M Standard Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel*， 2024-04-21 Update
• ASTM A6/A6M Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling*， 2024-03-01 Update
• ASTM A615/A615M Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
• ASTM A700 Standard Practices for Packaging, Marking, and Loading Methods for Steel Products for Domestic Shipment
• ASTM A751 Standard Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
• ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• ASTM E290 Standard Test Methods for Bend Testing of Material for Ductility
• ASTM E8/E8M Standard Test Methods for Tension Testing of Metallic Materials*， 2024-01-01 Update
• AWS D1.4 Structural Welding Code - Reinforcing Steel Errata

ASTM A706/A706M-22a history

• 2022 ASTM A706/A706M-22a Standard Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement
• 2022 ASTM A706/A706M-22 Standard Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement
• 2016 ASTM A706/A706M-16 Standard Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement
• 2015 ASTM A706/A706M-15 Standard Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement
• 2014 ASTM A706/A706M-14 Standard Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement
• 2013 ASTM A706/A706M-13 Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2009 ASTM A706/A706M-09b Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2009 ASTM A706/A706M-09a Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2009 ASTM A706/A706M-09 Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2008 ASTM A706/A706M-08a Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2008 ASTM A706/A706M-08 Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2006 ASTM A706/A706M-06a Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2006 ASTM A706/A706M-06 Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2005 ASTM A706/A706M-05a Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2005 ASTM A706/A706M-05 Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2004 ASTM A706/A706M-04b Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2004 ASTM A706/A706M-04a Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2004 ASTM A706/A706M-04 Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2003 ASTM A706/A706M-03a Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2003 ASTM A706/A706M-03 Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2002 ASTM A706/A706M-02 Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2001 ASTM A706/A706M-01 Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement
• 2000 ASTM A706/A706M-00 Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement