ASTM_A_1066_-_A_1066M_-_11_2015e1.pdf

Designation:A1066/A1066M11(Reapproved 2015)1Standard Specification forHigh-Strength Low-Alloy Structural Steel Plate Produced byThermo-Mechanical Controlled Process(TMCP)1This standard is issued under the fixed designation A1066/A1066M;the number immediately following the designation indicates theyear 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()indicates an editorial change since the last revision or reapproval.1NOTEEditorial corrections were made to Table 1 in September 2015.1.Scope1.1 This specification covers steel plates produced by thethermo-mechanical controlled process(TMCP).Five gradesare defined by the yield strength:50 345,60 415,65 450,70 485,and 80 550.The plates are intended primarily foruse in welded steel structures.1.2 The TMCP method consists of rolling reductions andcooling rate controls that result in mechanical properties in thefinished plate that are equivalent to those attained usingconventional rolling and heat treatment processes,which entailreheating after rolling.A description of the TMCP method isgiven in Appendix X1.1.3 The maximum thicknesses available in the grades cov-ered by this specification are shown in Table 1.1.4 Due to the special combination of mechanical andthermal treatment inducing lower rolling temperatures than forconventional hot rolling the plates can not be formed atelevated temperatures without sustaining significant losses instrength and toughness.The plates may be formed and post-weld heat-treated at temperatures not exceeding 1050F560C.Higher temperatures may be possible if proven thatminimum mechanical characteristics are retained after testswith specimens in the post-weld heat treatment(PWHT)condition.For flame straightening higher temperatures can beused in accordance with the steel manufacturers recommen-dations.1.5 If the steel is to be welded,a welding procedure suitablefor the grade of steel and intended use or service is to beutilized.See Appendix X3 of Specification A6/A6M forinformation on weldability.1.6 Supplementary requirements are available but shallapply only if specified in the purchase order.1.7 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 stated in eachsystem are not exact equivalents;therefore,each system is tobe used independently of the other,without combining valuesin any way.2.Referenced Documents2.1 ASTM Standards:2A6/A6M Specification for General Requirements for RolledStructural Steel Bars,Plates,Shapes,and Sheet PilingA673/A673M Specification for Sampling Procedure for Im-pact Testing of Structural Steel3.General Requirements for Delivery3.1 Material furnished under this specification shall con-form to the applicable requirements of the current edition ofSpecification A6/A6M.4.Materials and Manufacture4.1 The steel shall be killed.4.2 The plates shall be produced by the thermo-mechanicalcontrolled process.5.Chemical Composition5.1 The chemical composition on heat analysis shall con-form to the requirements given 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 carbon equivalent on heat analysis shall not exceedthe limits listed in Table 2.The chemical analysis(heatanalysis)of the elements that appear in the carbon equivalent1This 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 Sept.1,2015.Published September 2015.Originallyapproved in 2011.Last previous edition approved in 2011 as A1066 11.DOI:10.1520/A1066_A1066M-11R15.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 formula and the actual carbon equivalent shall be reported.Forthe calculation of the carbon equivalent the following formulashall be used:CE5 C1Mn61Cr1Mo1V!51Cu1Ni!156.Mechanical Properties6.1 Tensile PropertiesThe material as represented by thetest specimens shall conform to the tensile properties given inTable 3.6.2 Charpy V-notch tests shall be made in accordance withSpecification A673/A673M,Frequency H.6.2.1 The test results of full-size specimens taken from thelongitudinal direction of the product shall meet an averagevalue of 35 ft-lbf 48 J at 10F 23C.Subsize specimensare permitted as allowed by Specification A673/A673M.6.2.2 Charpy-V-notch test requirements varying from thevalue specified in 6.2.1 or other test temperatures