ASTM A706 A706M-2008 Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement.pdf
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1、Designation: A 706/A 706M 08Standard Specification forLow-Alloy Steel Deformed and Plain Bars for ConcreteReinforcement1This standard is issued under the fixed designation A 706/A 706M; the number immediately following the designation indicates the yearof original adoption or, in the case of revisio
2、n, 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 Department of Defense.1. Scope*1.1 GeneralThis specifica
3、tion covers deformed and plainlow-alloy steel bars in cut lengths or coils for concretereinforcement intended for applications where restrictive me-chanical properties and chemical composition are required forcompatibility with controlled tensile property applications or toenhance weldability. The s
4、tandard sizes and dimensions ofdeformed bars and their number designations are given inTable 1. The text of this specification references notes andfootnotes that provide explanatory material. These notes andfootnotes, excluding those in tables, shall not be considered asrequirements of this specific
5、ation.1.2 GradeBars are of a single minimum yield strengthlevel: namely, 60 000 psi 420 MPa, designated as Grade 60420.1.3 Plain rounds, in sizes up to and including 212 in. 63.5mm in diameter in coils or cut lengths, when ordered, shall befurnished under this specification. For ductility properties
6、(elongation and bending), test provisions of the nearest smallernominal diameter deformed bar size shall apply.1.4 Controlled Tensile PropertiesThis specification limitsmechanical properties (Table 2) to provide the desired yield/tensile properties for controlled tensile property applications.1.5 We
7、ldingThis specification limits chemical composi-tion (6.2) and carbon equivalent (6.4) to enhance the weldabil-ity of the material. When steel is to be welded, a weldingprocedure suitable for the chemical composition and intendeduse or service should be used. The use of the latest edition ofAWS D1.4
8、/D1.4M is recommended. This document describesthe proper selection of the filler metals, preheat/interpasstemperatures, as well as, performance and procedure qualifi-cation requirements.1.6 This specification is applicable for orders in eitherinch-pound units (Specification A 706) or in SI units Spe
9、cifi-cation A 706M.1.7 The values stated in either inch-pound units or SI unitsare to be regarded as standard. Within the text, the SI units areshown in brackets. The values stated in each system are notexact equivalents; therefore, each system must be used inde-pendently of the other. Combining val
10、ues from the two systemsmay result in nonconformance with this specification.2. Referenced Documents2.1 ASTM Standards:2A 6/A 6M Specification for General Requirements forRolled Structural Steel Bars, Plates, Shapes, and SheetPilingA 370 Test Methods and Definitions for Mechanical Testingof Steel Pr
11、oductsA 510 Specification for General Requirements for WireRods and Coarse Round Wire, Carbon SteelA 510M Specification for General Requirements for WireRods and Coarse Round Wire, Carbon Steel (Metric)A 615/A 615M Specification for Deformed and PlainCarbon-Steel Bars for Concrete ReinforcementA 700
12、 Practices for Packaging, Marking, and LoadingMethods for Steel Products for ShipmentA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel ProductsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 AWS Standard:3AWS D1.4/D1.4M
13、 Structural Welding CodeReinforcingSteel2.3 Government Standard:4MIL-STD-129 Marking for Shipment and Storage1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.05 on Steel Reinforcement.C
14、urrent edition approved May 1, 2008. Published May 2008. Originallyapproved in 1974. Last previous edition approved in 2006 as A 706/A 706M 06a.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards v
15、olume information, refer to the standards Document Summary page onthe ASTM website.3Available from American Welding Society (AWS), 550 NW LeJeune Rd.,Miami, FL 33126, http:/www.aws.org.4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA
16、 19111-5098, http:/www.dodssp.daps.mil.1*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.2.4 U.S. Federal Standard:4Fed. Std. No. 123 Marking for Shipment (Civil Agencie
17、s)3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 deformations, ntransverse protrusions on a de-formed bar.3.1.2 deformed bar, nsteel bar with protrusions; a barthat is intended for use as reinforcement in reinforced concreteand related construction.3.1.3 DiscussionThe surface
18、 of the bar is provided withlugs or protrusions that inhibit longitudinal movement of thebar relative to the concrete surrounding the bar in suchconstruction. The lugs or protrusions conform to the provisionsof this specification.3.1.4 plain bar, nsteel bar without protrusions.3.1.5 rib, nlongitudin
19、al protrusions on a deformed bar.4. Ordering Information4.1 It shall be the responsibility of the purchaser to specifyall requirements that are necessary for material ordered to thisspecification. Such requirements shall include, but are notlimited to, the following:4.1.1 Quantity (weight) mass,4.1.
20、2 Name of material (low-alloy steel deformed and plainbars for concrete reinforcement),4.1.3 Size,4.1.4 Cut lengths or coils,4.1.5 Deformed or plain,4.1.6 Packaging (see Section 17), and4.1.7 ASTM designation and year of issue.5. Material and Manufacture5.1 The bars shall be processed from properly
21、identifiedheats of mold cast or strand cast steel.5.2 The steel shall be made by one of the followingprocesses: electric-furnace, basic-oxygen, or open-hearth.6. Chemical Composition6.1 The chemical analysis of each heat shall be determinedin accordance with Test Methods A 751. The manufacturershall
22、 make the analysis on test samples taken preferably duringthe pouring of the heat. The percentages of carbon, manganese,phosphorus, sulfur, silicon, copper, nickel, chromium, molyb-denum, and vanadium shall be determined.6.2 The chemical composition as shown by heat analysisshall be limited by the f
23、ollowing:Element max, %CarbonManganese0.301.50Phosphorus 0.035Sulfur 0.045Silicon 0.506.3 Choice and use of alloying elements, combined withcarbon, phosphorus, and sulfur to give the mechanical proper-ties prescribed in Table 2 and Table 3, shall be made by themanufacturer. Elements commonly used in
24、clude manganese,silicon, copper, nickel, chromium, molybdenum, vanadium,columbium, titanium, and zirconium.6.4 The heat analysis shall be such as to provide a carbonequivalent (C.E.) not exceeding 0.55 % as calculated by thefollowing formula:C.E. 5 %C1%Mn61%Cu401%Ni201%Cr102%Mo502%V10(1)TABLE 1 Defo
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