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ASTM A1011 - A 1011M - 14.pdf

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ASTM A1011 - A 1011M - 14.pdf

Designation A1011/A1011M − 14Standard Specification forSteel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with ImprovedFormability, and Ultra-High Strength1This standard is issued under the fixed designation A1011/A1011M; 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.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This specification covers hot-rolled, carbon, structural,high-strength low-alloy, high-strength low-alloy with im-proved formability, and ultra-high strength steel sheet and strip,in coils and cut lengths.1.2 Hot rolled steel sheet and strip is available in thedesignations as listed in 4.1.1.3 This specification is not applicable to the steel coveredby Specification A635/A635M.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.2. Referenced Documents2.1 ASTM Standards2A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA568/A568M Specification for Steel, Sheet, Carbon,Structural, and High-Strength, Low-Alloy, Hot-Rolled andCold-Rolled, General Requirements forA635/A635M Specification for Steel, Sheet and Strip,Heavy-Thickness Coils, Hot-Rolled, Alloy, Carbon,Structural, High-Strength Low-Alloy, and High-StrengthLow-Alloy with Improved Formability, General Require-ments forA749/A749M Specification for Steel, Strip, Carbon andHigh-Strength, Low-Alloy, Hot-Rolled, General Require-ments forA751 Test Methods, Practices, and Terminology for Chemi-cal Analysis of Steel ProductsA941 Terminology Relating to Steel, Stainless Steel, RelatedAlloys, and FerroalloysE18 Test Methods for Rockwell Hardness of Metallic Ma-terials3. Terminology3.1 DefinitionsFor definitions of other terms used in thisspecification refer to Terminology A941.3.2 Definitions of Terms Specific to This Standard3.2.1 agingloss of ductility with an increase in hardness,yield strength, and tensile strength that occurs when steel,which has been slightly cold worked such as by temperrolling is stored for some time.3.2.1.1 DiscussionAging also increases the tendency to-ward stretcher strains and fluting.3.2.2 inclusion control, nthe process of reducing thevolume fraction of inclusions or modifying the shape ofinclusions to improve formability, weldability, and machinabil-ity.3.2.2.1 DiscussionInclusions, especially those elongatedduring the rolling process, create the conditions for initiating orpropagating cracks when the material is stretched or bentduring the manufacture of a part or both. The adverse effectsof inclusions are minimized by reducing the content ofinclusions in the steel or by altering the shape of inclusionsthrough the use of additions during the steelmaking processthat change the elongated shape of the inclusions to lessharmful small, well dispersed globular inclusions or both.3.2.3 stabilizationaddition of one or more nitride or car-bide forming elements, or both, such as titanium andcolumbium, to control the level of the interstitial elementscarbon and nitrogen in the steel.3.2.3.1 DiscussionStabilization improves formability andincreases resistance to aging.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.19 on Steel Sheet and Strip.Current edition approved March 1, 2014. Published April 2014. Originallyapproved in 2000. Last previous edition approved in 2013 as A1011/A1011M – 13.DOI 10.1520/A1011_A1011M-14.2For 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1Copyright by ASTM Intl all rights reserved;3.2.4 vacuum degassingprocess of refining liquid steel inwhich the liquid is exposed to a vacuum as part of a specialtechnique for removing impurities or for decarburizing thesteel.4. Classification4.1 Hot-rolled steel sheet and steel strip is available in thefollowing designations4.1.1 Commercial Steel CS Types A, B, C, and D, asspecified in Table 1,4.1.2 Commercial Steel CS TypesAand B combined withchemistry grade per Specification A568/A568M Table X2.3,4.1.3 Drawing Steel DS Types A and B, as specified inTable 1,4.1.4 Drawing Steel DS Types A and B combined withchemistry grade per Specification A568/A568M Table X2.3,4.1.5 Commercial Steel Chemistry grade per SpecificationA568/A568M Table X2.1, with no type specified CS – 1005,CS – 1008, CS – 1020, etc.,4.1.6 Structural Steel SS grades 30[205], 33[230], 36[250]Types 1 and 2, 40[275], 45[310] Types 1 and 2, 50[340],55[380], 60[410], 70[480], and 80[550],4.1.7 High-Strength Low-Alloy Steel HSLAS, classes 1and 2, in grades 45[310], 50[340], 55[380], 60[410], 65[450],and 70[480].4.1.8 High-Strength Low-Alloy Steel with Improved Form-ability HSLAS-F grades 50[340], 60[410], 70[480], and80[550].4.1.8.1 HSLAS-F steel has improved formability whencompared to HSLAS. The steel is fully deoxidized, made to afine grain practice, and includes microalloying elements suchas columbium, vanadium, and zirconium. The steel shall betreated to achieve inclusion control.4.1.9 Ultra-High Strength UHSS Types 1 and 2, in Grades90 [620] and 100 [690].4.1.9.1 UHSS steel has increased strength compared withHSLAS-F. The steel is killed and made to a fine ferritic grainpractice, and includes microalloying elements such as colum-bium niobium, titanium, vanadium, molybdenum, and soforth. The steel shall be treated to achieve inclusion control.The material is intended for miscellaneous applications wherehigher strength, savings in weight, and weldability are impor-tant.Atmospheric corrosion resistance of these steels is equiva-lent to plain carbon steels. With copper specified, the atmo-spheric corrosion resistance is somewhat enhanced.4.1.10 When required for HSLAS, HSLAS-F, and UHSSsteels, limitations on the use of one or more of the microalloyelements shall be specified on the order.5. Ordering Information5.1 It is the purchaser’s responsibility to specify in thepurchase order all ordering information necessary to describethe required material. Examples of such information include,but are not limited to, the following5.1.1 ASTM specification number and year of issue,5.1.2 Name of material and designation hot-rolled steelsheet include grade, type and class, as appropriate, for CS,DS, SS, HSLAS, HSLAS-F, and UHSS see 4.1,5.1.2.1 When a chemistry grade is specified per Specifica-tion A568/A568M Table X2.3, the grade shall be furnished as;CS Type B – 1008, DS Type A -1005, etc.,5.1.2.2 When a chemistry grade is specified per Specifica-tion A568/A568M Table X2.1, with no reference to CS TypeA,CS Type B, DS Type A, or DS Type B, the grade shall befurnished as CS – 1005, CS – 1008,CS – 1020 etc., and meetchemistry specified per Specification A568/A568M TableX2.1,5.1.2.3 When a type is not specified for CS or DS and thereis no reference to a chemistry grade such as 1005, 1006, etc.,Type B will be furnished see 4.1,5.1.2.4 When a class is not specified for HSLAS, Class 1will be furnished see 4.1,5.1.2.5 When a type is not specified for SS Grades, Type 1will be furnished see 4.1,5.1.2.6 When a type is not specified for UHSS, Type 1 shallbe furnished see 4.1.5.1.3 Finish see 9.15.1.4 Type of edge see 9.3,5.1.5 Oiled or not oiled, as required see 9.2,5.1.6 Dimensions thickness, width, and whether cut lengthsor coils,TABLE 1 Chemical CompositionAFor Hot Rolled Steel Sheet and Strip Designations CS and DSComposition, Heat AnalysisElement maximum unless otherwise shownCMnPSAlSiCuNiCrBMo V Cb TiCNBCS Type AD,E,F,G0.10 0.60 0.030 0.035 . . . . . . 0.20H0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .CS Type BF0.02 to 0.15 0.60 0.030 0.035 . . . . . . 0.20H0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .CS Type CD,E,F,G0.08 0.60 0.10 0.035 . . . . . . 0.20H0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .CS Type DF0.10 0.70 0.030 0.035 . . . . . . 0.20H0.20 0.15 0.06 0.008 0.008 0.008 . . . . . .DS Type AD,E,G0.08 0.50 0.020 0.030 0.01 min . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .DS Type B 0.02 to 0.08 0.50 0.020 0.030 0.01 min . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .AWhere an ellipsis . . . appears in the table, there is no specified limit, but the analysis shall be reported.BChromium is permitted, at the producer’s option, to 0.25 maximum when the carbon content is less than or equal to 0.05 .CFor steels containing 0.02 carbon or more, titanium is permitted at the producer’s option, to the lesser of 3.4N 1.5S or 0.025 .DSpecify Type B to avoid carbon levels below 0.02 .EFor carbon levels less than or equal to 0.02 , it is permissible to use vanadium, columbium, or titanium, or combinations thereof, as stabilizing elements at the producer’soption. In such case, the limits for these elements are 0.10 for vanadium or columbium and 0.15 for titanium.FWhen an aluminum deoxidized steel is required, it is permissible to order a minimum of 0.01 total aluminum.GIt is permissible to furnish as a vacuum degassed or chemically stabilized steel, or both, at producer’s option.HWhen copper steel is specified, the copper limit is a minimum requirement. When copper steel is not specified, the copper limit is a maximum requirement.A1011/A1011M − 142Copyright by ASTM Intl all rights reserved;NOTE 1Not all producers are capable of meeting all the limitations ofthe thickness tolerance tables in Specifications A568/A568M and A749/A749M. The purchaser should contact the producer prior to placing anorder.5.1.7 Coil size inside diameter, outside diameter, and maxi-mum weight,5.1.8 Copper bearing steel if required,5.1.9 Quantity,5.1.10 Application part identification and description,5.1.11 A report of heat analysis will be supplied, ifrequested, for CS and DS. For materials with required me-chanical properties, SS, HSLAS, HSLAS-F, and UHSS, areport is required of heat analysis and mechanical properties asdetermined by the tension test, and5.1.12 Special requirements if any.5.1.12.1 When the purchaser requires thickness tolerancesfor3⁄8 in. [10 mm] minimum edge distance see SupplementaryRequirement in Specification A568/A568M, this requirementshall be specified in the purchase order or contract.5.1.12.2 Tighter requirements can be specified based onagreement between seller and purchaser.NOTE 2A typical ordering description is as follows ASTM A1011-XX, hot rolled steel sheet, CS Type A, pickled and oiled, cut edge, 0.075by 36 by 96 in., 100 000 lb, for part no. 6310, for shelf bracket.orASTM A1011M-XX, hot rolled steel sheet, CS Type B, pickled and oiled,cut edge, 3.7 by 117 mm by coil, ID 600 mm, OD 1500 mm, max weight10 000 kg, 50 000 kg, for upper control arm.6. General Requirements for Delivery6.1 Material furnished under this specification shall con-form to the applicable requirements of the current edition ofSpecification A568/A568M for sheets and Specification A749/A749M for strip, unless otherwise provided for herein.7. Chemical Composition7.1 The heat analysis of the steel shall conform to thechemical composition requirements of the appropriate desig-nation shown in Table 1 for CS and DS and Table 2 for SS,HSLAS, HSLAS-F, and UHSS.7.1.1 Areport of heat analysis will be supplied, if requested,for CS and DS. For materials with required mechanicalproperties, SS, HSLAS, HSLAS-F, and UHSS, a report of heatanalysis is required.7.2 Each of the elements listed in Table 1, Table 2, andSpecification A568/A568M Table X2.3 shall be included in thereport of the heat analysis. When the amount of copper, nickel,chromium, or molybdenum is less than 0.02 , report theanalysis as 0.02 or the actual determined value. When theamount of vanadium, columbium, or titanium is less than0.008 , report the analysis as 0.008 or the actual deter-mined value. When the amount of boron is less than 0.0005 ,report the analysis as 0.0005 or the actual determinedvalue.7.3 Sheet steel grades defined by this specification aresuitable for welding if appropriate welding conditions areselected. For certain welding processes, if more restrictivecomposition limits are desirable, they shall be specified at thetime of inquiry and confirmed at the time of ordering.8. Mechanical Properties8.1 CS and DS8.1.1 Typical, nonmandatory mechanical properties for CSand DS for all grades specified in Table 1 and SpecificationA568/A568M Table X2.3 are found in Table 3.8.1.2 The material represented by all grades specified inTable 1 and Specification A568/A568M Table X2.3 shall becapable of being bent at room temperature in any directionthrough 180 flat on itself without cracking on the outside ofthe bent portion see the section on bend test in Test Methodsand Definitions A370. The bend test is not a requirement ofdelivery. However, if testing is performed by the purchaser,material not conforming to the requirement shall be subject torejection.8.2 SS, HSLAS, HSLAS-F, and UHSS8.2.1 The available grades and corresponding mechanicalproperties for SS, HSLAS, HSLAS-F, and UHSS are shown inTable 4.8.2.1.1 For SS, HSLAS, HSLAS-F, and UHSS, a report isrequired of mechanical properties as determined by the tensiontest.8.2.2 Tension Tests8.2.2.1 RequirementsMaterial as represented by the testspecimen shall conform to the mechanical property require-ments specified in Table 4. These requirements do not apply tothe uncropped ends of unprocessed coils.8.2.2.2 Number of TestsTwo tension tests shall be madefrom each heat or from each 50 tons [45 000 kg]. When theamount of finished material from a heat is less than 50 tons[45 000 kg], one tension test shall be made. When materialrolled from one heat differs 0.050 in. [1.27 mm] or more inthickness, one tension test shall be made from the thickest andthinnest material regardless of the weight represented.8.2.2.3 Tension test specimens shall be taken at a pointimmediately adjacent to the material to be qualified.8.2.2.4 Tension test specimens shall be taken from the fullthickness of the sheet as-rolled.8.2.2.5 Tension test specimens shall be taken from a loca-tion approximately halfway between the center of sheet and the

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