1、Designation: A1066/A1066M 11 (Reapproved 2015)2Standard 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
2、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
3、 2015.2NOTEEditorial corrections were made throughout in November 2017.1. 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 prima
4、rily 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 rolli
5、ng. 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 rolli
6、ng 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 ar
7、e 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 u
8、se 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 stand
9、ard. 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.1.8 This international standard was developed in accor-dance with internationally rec
10、ognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A6/A6M Specificatio
11、n 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 requ
12、irements 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 i
13、n Table 1.1This 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 Septe
14、mber 2015. Originallyapproved in 2011. Last previous edition approved in 2011 as A1066/A1066M 11.DOI: 10.1520/A1066_A1066M-11R15E02.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume inform
15、ation, 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 StatesThis international standard was developed in accordance with internationally recognized principles on standardizatio
16、n established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.15.2 The steel shall conform on product analysis to therequirements prescribed in Table 1 subject t
17、o 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 equivalentformula and the actual carbon equivalent shall be reported. Forth
18、e calculation of the carbon equivalent the following formulashall be used:CE 5 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 acco
19、rdance 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
20、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 high-strength low-alloy steel; steel plates; structuralsteel; thermo-mechanical controlled rolling; weldedconstructionTABLE 1 Chemical Re
21、quirements (Heat Analysis)ElementContent in %Grade 50 345 Grade 60 415 Grade 65 450 Grade 70 485 Grade 80 550ThicknessMax 4 in.100 mmMax 4 in.100 mmMax 3 in.75 mmMax 2 in.50 mmMax 1 in.25 mmCarbon, max 0.14A0.16 0.16 0.16 0.16Manganese 0.701.60 0.801.70 0.801.70 0.801.70 1.002.00Phosphorus, max 0.03
22、0 0.030 0.030 0.030 0.030Sulfur, max 0.020 0.020 0.020 0.020 0.020Silicon 0.150.50 0.150.50 0.150.50 0.150.50 0.150.50Copper, 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, max 0.10 0.20 0.25 0.30 0.40Columbium, max 0.05 0.05 0.05 0.
23、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 i
24、s 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 rep
25、orted on the test report.TABLE 2 Maximum Carbon Equivalent (Heat Analysis)Maximum Carbon Equivalent in %Grade 50 345 Grade 60 415 Grade 65 450 Grade 70 485 Grade 80 550ThicknessMax 4 in.100 mmMax 4 in.100 mmMax 3 in.75 mmMax24in.50 mmMax 1 in.25 mmCE 0.40 0.43 0.45 0.47 0.50TABLE 3 Tensile Requireme
26、ntsGradeYield 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 (2015)22SUPPLEMENTARY REQUIREMENTSSupplementar
27、y 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 Treatme
28、nt,S2. Product Analysis,S3. Simulated Post-Weld Heat Treatment of MechanicalTest Coupons,S4. 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
29、 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
30、 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.APPENDIX(Nonmandatory Information)X1. THERMO-MECHANICAL CONTROLLED PROCESSING (TMCP)X1.1 IntroductionThe Thermo-Mechanical Co
31、ntrolledProcessing, 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 spec
32、i-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 follows:X1.2.1 Thermo-Me
33、chanical Rolling (TMR)Steels 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,
34、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 (AC)Steels meeting thespecified requirements are produced by controlled cooling(
35、accelerated cooling by water or air cooling) through thedual-phase temperature region immediately after final CR orTMR operation.X1.2.3 Direct Quenching and Tempered (DQT)Steelsmeeting the specified requirements are produced by promotinggrain refinement and increasing hardness through directquenchin
36、g 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 (2015)23
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40、ee 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
41、or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.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:/ X1.1 Schematic Diagrams of Thermomechanical Control and Conventional Process for Steel PlateA1066/A1066M 11 (2015)24
