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 in Table 1. The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes, excluding those in tables and figures, 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 rounds, in sizes up to and including 2 in. [50.8 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 ANSI/AWS D1.4 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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

A6/A6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling

A370 Test Methods and Definitions for Mechanical Testing of Steel Products

A510 Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel

A510M Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel (Metric)

A615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement

A700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Shipment

A751 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

AWS Standard

Government Standard

U.S. Federal Standard

Keywords

alloy steel; concrete reinforcement; deformations (protrusions); steel bars; Concrete reinforcement--specifications; Deformed steel bars--specifications; Alloy steel bars--specifications; Low-alloy steel--specifications; Steel bars (concrete reinforcement)--specifications;

ICS Code

ICS Number Code 77.140.15 (Steels for reinforcement of concrete)

DOI: 10.1520/A0706_A0706M-02

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