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ASTM A1066 - A 1066M - 11 (2015)e1.pdf

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ASTM A1066 - A 1066M - 11 (2015)e1.pdf

Designation A1066/A1066M − 11 Reapproved 20151Standard Specification forHigh-Strength Low-Alloy Structural Steel Plate Produced byThermo-Mechanical Controlled Process TMCP1This 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.ε1NOTEEditorial 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 1050F[560C]. Higher temperatures may be possible if proven thatminimum mechanical characteristics are retained after testswith specimens in the post-weld heat treatment PWHTcondition. For flame straightening higher temperatures can beused in accordance with the steel manufacturer’s 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 Standards2A6/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. DOI10.1520/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 standard’s Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1formula and the actual carbon equivalent shall be reported. Forthe calculation of the carbon equivalent the following formulashall be usedCE 5 C1Mn61Cr1Mo1V51Cu1Ni156. 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 are subject tothe agreement between the purchaser and the producer.7. Keywords7.1 steel plates; high-strength low-alloy steel; thermo-mechanical controlled rolling; structural steel; weldedconstructionTABLE 1 Chemical Requirements Heat AnalysisElementContent in []Grade 50 [345] Grade 60 [415] Grade 65 [450] Grade 70 [485] Grade 80 [550]ThicknessMax 4 in.[100 mm]Max 4 in.[100 mm]Max 3 in.[75 mm]Max 2 in.[50 mm]Max 1 in.[25 mm]Carbon, max 0.14A0.16 0.16 0.16 0.16Manganese 0.70–1.60 0.80–1.70 0.80–1.70 0.80–1.70 1.00–2.00Phosphorus, max 0.030 0.030 0.030 0.030 0.030Sulfur, max 0.020 0.020 0.020 0.020 0.020Silicon 0.15–0.50 0.15–0.50 0.15–0.50 0.15–0.50 0.15–0.50Copper, max 0.35 0.35 0.35 0.35 0.35Nickel, max 0.30 0.70 0.70 0.70 0.70Chromium, max 0.30 0.30 0.30 0.35 0.40Molybdenum 0.10 0.20 0.25 0.30 0.40Columbium, max 0.05 0.05 0.05 0.05 0.10Vanadium, max 0.08 0.08† 0.08 0.09 0.09Aluminium, min 0.020 total or0.015 solubleB0.020 total or0.015 solubleB0.020 total or0.015 solubleB0.020 total or0.015 solubleB0.020 total or0.015 solubleBBoron, max 0.002 0.002 0.002 0.002 0.002† Editorially corrected.AWhen Supplementary Requirement S75 is ordered the carbon content is 0.16 max.BBy agreement the steel may be produced with titanium, in which case the minimum aluminum content shall not apply. When this option is exercised, the titanium content,by heat analysis, shall be 0.006 to 0.02 , and the actual titanium content shall be reported on the test report.TABLE 2 Maximum Carbon Equivalent Heat AnalysisMaximum Carbon Equivalent in []Grade 50 [345] Grade 60 [415] Grade 65 [450] Grade 70 [485] Grade 80 [550]ThicknessMax 4 in.[100 mm]Max 4 in.[100 mm]Max 3 in.[75 mm]Max24in.[50 mm]Max 1 in.[25 mm]CE 0.40 0.43 0.45 0.47 0.50TABLE 3 Tensile RequirementsGradeYield Point, min Tensile Strength, min Elongation, minksi [MPa] ksi [MPa] 8 in. [200 mm], 2 in. [50 mm], 50 [345] 50 [345] 65 [450] 18 2060 [415] 60 [415] 75 [520] 16 1865 [450] 65 [450] 80 [550] 15 1770 [485] 70 [485] 85 [585] 14 1680 [550] 80 [550] 90 [620] 13 15A1066/A1066M − 11 201512SUPPLEMENTARY REQUIREMENTSSupplementary requirements shall not apply unless specified in the purchase order or contract.Standardized supplementary requirements for use at the option of the purchaser are listed inSpecification A6/A6M. Those that are considered suitable for use with this specification are listed bytitle.S1. Vacuum Treatment,S2. Product Analysis,S3. Simulated Post-Weld Heat Treatment of MechanicalTest Coupons,S14. Additional Tension Test,S5.2. Charpy V-Notch Impact Test, andS8. Ultrasonic Examination.ADDITIONAL SUPPLEMENTARY REQUIREMENTSIn addition, the following special supplementary requirements are also suitable for use with thisspecification.S75. Maximum Yield Point to Tensile Strength Ratio Grade50 and Grade 60The maximum yield to tensile ratio shall be0.87 for grade 50 and 0.90 for grade 60. In this case themaximum carbon content on the heat analysis can be raised to0.16 for grade 50.S76. Maximum Tensile StrengthThe maximum tensilestrength shall be 91 ksi [630] for grade 50, 98 ksi [680] forgrade 60, 105 ksi [720] for grade 65, 110 ksi [750] forgrade 70, and 115 ksi [800] for grade 80.APPENDIXNonmandatory InformationX1. THERMO-MECHANICAL CONTROLLED PROCESSING TMCPX1.1 IntroductionThe Thermo-Mechanical ControlledProcessing, commonly referred to as “TMCP” has evolvedfrom the “controlled rolling” CR processes. TMCP producesfined-grain steel by a combination of chemical compositionand integrated controls of manufacturing processes from slabreheating to post-rolling cooling, thereby achieving the speci-fied mechanical properties in the required plate thicknesses.TMCP requires accurate control of both the steel temperatureand rolling reductions, and does not involve coiling afterpost-cooling.X1.2 Outline of TMCPAs shown in Fig. X1.1, TMCPmay incorporate three processes as followsX1.2.1 Thermo-Mechanical Rolling TMRSteels of finegrain size are produced by rolling in the recrystallisation andnon-recrystallisation regions of austenite, and sometimes in thedual-phase temperature region of austenite and ferrite.Generally, a high proportion of rolling reduction is performedclose to, or below, the temperature at which austenite begins totransform to ferrite during cooling Ar3 and may involverolling in the lower portion of the temperature range of theintercritical dual-phase region.X1.2.2 Accelerated Cooling ACSteels meeting thespecified requirements are produced by controlled coolingaccelerated cooling by water or air cooling through thedual-phase temperature region immediately after final CR orTMR operation.X1.2.3 Direct Quenching and Tempered DQTSteelsmeeting the specified requirements are produced by promotinggrain refinement and increasing hardness through directquenching immediately after final CR or TMR operation.Subsequent to direct quenching the plates are tempered.X1.3 The selection, from the above, of the method to beused is made by the steel producer depending upon chemicalcomposition, the plate thickness, and the required properties.A1066/A1066M − 11 201513ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 phone, 610-832-9555 fax, or serviceastm.org e-mail; or through the ASTM websitewww.astm.org. Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel 978 646-2600; http//www.copyright.com/FIG. X1.1 Schematic Diagrams of Thermomechanical Control and Conventional Process for Steel PlateA1066/A1066M − 11 201514

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