1、Designation:A588/A588M15American Association StateHighway and Transportation Officials StandardAASHTO No.:M 222Standard Specification forHigh-Strength Low-Alloy Structural Steel,up to 50 ksi 345MPa Minimum Yield Point,with Atmospheric CorrosionResistance1This standard is issued under the fixed desig
2、nation A588/A588M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,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
3、 reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification covers high-strength low-alloy struc-tural steel shapes,plates,and bars for welded,riveted,or boltedconstruction but intended primarily for use in welded bridgesand buildin
4、gs where savings in weight or added durability areimportant.The atmospheric corrosion resistance of this steel inmost environments is substantially better than that of carbonstructural steels with or without copper addition(see Note 1).When properly exposed to the atmosphere,this steel is suitablefo
5、r many applications in the bare(unpainted)condition.Thisspecification is limited to material up to 8 in.200 mminclusive in thickness.NOTE1For methods of estimating the atmospheric corrosion resis-tance of low-alloy steels,see Guide G101.1.2 When the steel is to be welded,a welding proceduresuitable
6、for the grade of steel and intended use or service is tobe utilized.See Appendix X3 of Specification A6/A6M forinformation on weldability.1.3 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard.Within the text,theSI units are shown in brackets.The values
7、 stated in eachsystem are not exact equivalents;therefore,each system is tobe used independently of the other,without combining valuesin any way.1.4 The text of this specification contains notes,footnotes,or both,that provide explanatory material.Such notes andfootnotes,excluding those in tables and
8、 figures,do not containany mandatory requirements.1.5 For structural products produced from coil and fur-nished without heat treatment or with stress relieving only,theadditional requirements,including additional testing require-ments and the reporting of additional test results,of Specifi-cation A6
9、/A6M apply.2.Referenced Documents2.1 ASTM Standards:2A6/A6M Specification for General Requirements for RolledStructural Steel Bars,Plates,Shapes,and Sheet PilingG101 Guide for Estimating the Atmospheric Corrosion Re-sistance of Low-Alloy Steels3.General Requirements for Delivery3.1 Structural produc
10、ts furnished under this specificationshall conform to the requirements of the current edition ofSpecification A6/A6M,for the specific structural productordered,unless a conflict exists,in which case this specificationshall prevail.3.2 Coils are excluded from qualification to this specifica-tion unti
11、l they are processed into a finished structural product.Structural products produced from coil means structural prod-ucts that have been cut to individual lengths from a coil.Theprocessor directly controls,or is responsible for,the operationsinvolved in the processing of a coil into a finished struc
12、turalproduct.Such operations include decoiling,leveling orstraightening,hot-forming or cold-forming(if applicable),cutting to length,testing,inspection,conditioning,heat treat-ment(if applicable),packaging,marking,loading for shipment,and certification.NOTE2For structural products produced from coil
13、 and furnishedwithout heat treatment or with stress relieving only,two test results are tobe reported for each qualifying coil.Additional requirements regardingstructural products produced from coil are described in SpecificationA6/A6M.1This specification is under the jurisdiction of ASTM Committee
14、A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.02 on Structural Steel for Bridges,Buildings,Rolling Stock and Ships.Current edition approved March 1,2015.Published March 2015.Originallyapproved in 1968.Last previous edition approved in 2010 as A58
15、8/A588M 10.DOI:10.1520/A0588_A0588M-15.2For referenced 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 secti
16、on appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Materials and Manufacture4.1 The steel shall be made to fine grain practice.5.Chemical Composition5.1 The heat analysis shall conform to the requirementsprescribed in Table 1.5.2 The steel shall conform on product analysis to therequirements prescribed in Table 1,subject to the productanalysis tolerances in Specification A6/A6M.5.3 The atmospheric
