Standard Speciﬁcation for
Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement1
This standard is issued under the ﬁxed designation A 706/A 706M; 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 lastreapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense.
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 andchemical 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 beconsidered 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 . 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 thenearest 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 tobe 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 eitherinch-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
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 March 10, 2001. Published March 2001. Originally published as A 706 – 74. Last previous edition A 706/A 706M – 00.
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 2.1ASTM Standards: A 6/A 6M Speciﬁcation for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Steel Piling2 A 370 Test Methods and Deﬁnitions for Mechanical Testing of Steel Products3 A 510 Speciﬁcation for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel3 A 510M Speciﬁcation for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel(Metric)3 A 615/A 615M Speciﬁcation for Deformed and Plain BilletSteel Bars for Concrete Reinforcement2 A 700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Domestic Shipment4 A 751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products2 E 29 Practice for Using Signiﬁcant Digits in Test Data to Determine Conformance with Speciﬁcations5 2.2...