1、Designation:A852/A852M 03(Reapproved 2007)Standard Specification forQuenched and Tempered Low-Alloy Structural Steel Platewith 70 ksi 485 MPa Minimum Yield Strength to 4 in.100mm Thick1This standard is issued under the fixed designation A852/A852M;the number immediately following the designation ind
2、icates 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 reapproval.1.Scope*1.1 This specification covers quenched and tempere
3、d high-strength low-alloy structural steel plates for welded,riveted,orbolted construction.It is intended primarily for use in weldedbridges and buildings where savings in weight,added durabil-ity,and good notch toughness are important.The atmosphericcorrosion resistance of this steel in most enviro
4、nments issubstantially better than that of carbon structural steels with orwithout copper addition(see Note 1).When properly exposedto the atmosphere,this steel can be used bare(unpainted)formany applications.Welding technique is of fundamental im-portance,and it is presupposed that the welding proc
5、edure willbe suitable for the steel and the intended service.Thisspecification is limited to material up to 4 in.100 mm,inclusive,in thickness.See Appendix X3 of SpecificationA6/A6M for information on weldability.NOTE1For methods of estimating the atmospheric corrosion resis-tance of low-alloy steel
6、s,see Guide G101.1.2 Plates produced under this specification are impacttested at a temperature not higher than 50F 10C.1.3 The values stated in inch-pound units or SI units are tobe regarded separately as standard.Within the text,the SI unitsare shown in brackets.The values stated in each item are
7、notexact equivalents.Therefore,each system must be used inde-pendently of the other.Combining values from the two systemsmay result in nonconformance with this specification.2.Referenced Documents2.1 ASTM Standards:2A6/A6M Specification for General Requirements for RolledStructural Steel Bars,Plates
8、,Shapes,and Sheet PilingA370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA673/A673M Specification for Sampling Procedure forImpact Testing of Structural SteelG101 Guide for Estimating the Atmospheric CorrosionResistance of Low-Alloy Steels3.General Requirements for Delivery3.
9、1 Material furnished under this specification shall con-form to the requirements of the current edition of SpecificationA6/A6M,for the ordered material,unless a conflict exists inwhich case this specification shall prevail.4.Materials and Manufacture4.1 The steel shall be made to fine grain practice
10、,and thefine austenitic grain size requirements of Specification A6/A6M shall be met.5.Heat Treatment5.1 The material shall be heat treated by the manufacturerby heating to a temperature that produces an austenitic struc-ture,but not less than 1650F 900C,holding a sufficient timeto attain uniform he
11、at throughout the material,quenching in a1This specification is under the jurisdiction of ASTM Committee 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 S
12、ept.1,2007.Published September 2007.Originallyapproved in 1985.Last previous edition approved in 2003 as A852/A852M 03.DOI:10.1520/A0852_A0852M-03R07.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards
13、 volume information,refer to the standards Document Summary page onthe ASTM website.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.NOTICE:This standard has either been sup
14、erseded and replaced by a new version or withdrawn.Contact ASTM International(www.astm.org)for the latest information suitable medium,and tempering at not less than 1100F593C.Heat treating temperatures shall be reported on thetest certificates.6.Chemical Composition6.1 The heat analysis shall confor
15、m to the requirementprescribed in Table 1.6.2 When product analysis is required,the steel shallconform on product analysis to the requirements prescribed inTable 1,subject to the product analysis tolerances in Specifi-cation A6/A6M.6.3 The atmospheric corrosion-resistance index calculatedon the basi
16、s of the heat analysis of the steel,as described inGuide G101Predictive Method Based on the Data of Larabeeand Coburn,shall be 6.0 or higher.NOTE2The user is cautioned that the Guide G101(Predictive MethodBased on the Data of Larabee and Coburn)for calculation of anatmospheric corrosion-resistance index has only been verified for thecomposition limits stated in that guide.6.4 When required,the manufacturer shall supply evidenceof corrosion resistance satisfactory to the purchaser.7.Tensile Test
