1、Designation:A663/A663M12Standard Specification forSteel Bars,Carbon,Merchant Quality,MechanicalProperties1This standard is issued under the fixed designation A663/A663M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last
2、 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 This specification covers hot-wrought mercha
3、nt qualitycarbon steel bars and bar size shapes produced to mechanicalproperty requirements and intended for noncritical construc-tional applications(see 7.2).1.2 Merchant quality hot-wrought steel bar is available inthe following ranges of size and section:1.2.1 Rounds,squares,and hexagons with dia
4、meters ordistance across flats under 3 in.75 mm.1.2.2 Bar size shapes with maximum dimensions under 3 in.75 mm.1.2.3 Other bar sections with weight per foot under40.84 lb/ft 60.78 kg/m.1.2.4 Flats 6 in.152 mm or under in width,over 0.203 in.over 5 mm in thickness up to 150 mm in width in thickness,a
5、nd under 40.84 lb/ft or 12 in.277.4 cm2 in cross-sectionalarea.1.2.5 Flats over 6 in.to 8 in.,inclusive in width,0.230 in.and over over 6 mm in thickness and over 50 mm through 200mm in width in thickness and under 40.84 lb/ft 60.78 kg/mor 12 in.277.4 cm2 in cross-sectional area.1.2.6 Hot-wrought me
6、rchant quality carbon steel bars sub-ject to mechanical property requirements are hot wrought instraight lengths only.1.3 Some applications may require one or more of theavailable designations shown under supplementary require-ments.NOTE1Special quality hot-wrought carbon steel bars subject tomechan
7、ical property requirements are covered in Specification A675/A675M.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combinin
8、gvalues from the two systems may result in non-conformancewith the standard.2.Referenced Documents2.1 ASTM Standards:2A29/A29M Specification for Steel Bars,Carbon and Alloy,Hot-Wrought,General Requirements forA370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA675/A675M Specifi
9、cation for Steel Bars,Carbon,Hot-Wrought,Special Quality,Mechanical PropertiesE290 Test Methods for Bend Testing of Material for Ductil-ity3.Ordering Information3.1 Orders for material under this specification shouldinclude the following information:3.1.1 Quantity(weight or number of pieces),3.1.2 D
10、imensions(cross-sectional shape,size,and length),3.1.3 Name of material(merchant quality carbon steel bars),3.1.4 Specification number and date of issue,3.1.5 Grade designation,3.1.6 Copper bearing steel(if required),3.1.7 Heat analysis or test report(request,if required),3.1.8 Application and proce
11、ssing,and3.1.9 Supplementary requirements(if required).4.Manufacture4.1 The steel shall be made by the basic-oxygen or electric-furnace process.5.Chemical Composition5.1 The steel shall conform on heat analysis to the followingchemical requirements:1This specification is under the jurisdiction of Co
12、mmittee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.15 on Bars.Current edition approved May 1,2012.Published May 2012.Originallyapproved in 1972.Last previous edition approved in 2006 as A663/A663M 89(2006).DOI:10.1520/A0663_A0663M-12.2For refe
13、renced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright
14、ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Phosphorus,max,percent0.04Sulfur,max,percent0.05Copper,when copper steel is specified,min,percent0.206.Mechanical Properties6.1 Tensile Requirements:6.1.1 The material as represented by the test speci
15、men shallconform to the applicable requirements in Table 1.6.1.2 Test specimens shall be prepared for testing from thematerial in its as-rolled condition.The tension specimen maybe aged as described in Test Methods and Definitions A370.6.1.3 Test specimens shall be taken longitudinally and maybe tes
16、ted in full thickness or section,or they may be machinedto the dimensions shown in Figs.4 or 5 of Test Methods andDefinitions A370.If test specimens are selected conforming tothe dimensions of Fig.5,they shall be machined from aposition midway between the center and the surface of the bar.6.1.4 Test specimens for shapes and flats may be machinedto the form and dimensions shown in Fig.4 of Test Methodsand Definitions A370 or with both edges parallel.Test speci-mens for material over 112in.40 mm i