1、Designation: A1066/A1066M 11Standard 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
2、 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.1. Scope1.1 This specification covers steel plates produced by thethermo-mechan
3、ical 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 propertie
4、s 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 sho
5、wn 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 p
6、ost-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 accord
7、ance 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
8、 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 use
9、d 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 forImpact Testing of Structural S
10、teel3. 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-mechanicalcontr
11、olled 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 ca
12、rbon 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. Forthe calculation of the carbon equivalent the following formulashall b
13、e used:CE 5 C 1Mn61Cr 1 Mo 1 V!51Cu 1 Ni!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.1This speci
14、fication 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 July 1, 2011. Published August 2011. DOI: 10.1520/A
15、1066_A1066M-11.2For 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.1Copyright ASTM International, 100 Barr Harbor
16、 Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.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
17、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; weldedconstructi
18、onTABLE 1 Chemical Requirements (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 1.002.0
19、0Phosphorus, max 0.030 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 0.10 0.20 0.25 0.30 0.40Columbium, max 0
20、.05 0.05 0.05 0.05 0.10Vanadium, max 0.08 0.008 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 0.002AWhen Supplementary Requirement S75 is orde
21、red 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 titaniumcontent, by heat analysis, shall be 0.006 % to 0.02 %, and the actual titanium content shall be reported
22、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 RequirementsGra
23、deYield 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 112SUPPLEMENTARY REQUIREMENTSSupplementary requirements
24、 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
25、 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 th
26、isspecification.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
27、 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 ControlledProc
28、essing, 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 mecha
29、nical 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-Mechanical Rol
30、ling (TMR)Steels of finegrain size are produced by rolling in the recrystallisation andnon-recrystallisation regions of austenite, and sometimes in theFIG. X1.1 Schematic Diagrams of Thermomechanical Control and Conventional Process for Steel PlateA1066/A1066M 113dual-phase temperature region of aus
31、tenite and ferrite. Gener-ally, a high proportion of rolling reduction is performed closeto, 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
32、.2 Accelerated Cooling (AC)Steels meeting thespecified requirements are produced by controlled cooling(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 specifie
33、d 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 depend
34、ing upon chemicalcomposition, the plate thickness, and the required properties.ASTM 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 vali
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