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ASTM A1083 - A 1083M - 12.pdf

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ASTM A1083 - A 1083M - 12.pdf

Designation A1083/A1083M − 12Standard Specification forSteel, Sheet, Cold-Rolled, Carbon, Structural, High-StrengthLow-Alloy, Produced by Twin-Roll Casting Process1This standard is issued under the fixed designation A1083/A1083M; 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.1. Scope1.1 This specification covers cold-rolled, carbon, structural,and high-strength low-alloy, in coils and cut lengths producedby the twin-roll casting process.1.2 Cold rolled steel sheet produced by the twin-roll castingprocess is available in the designations as listed in 4.1.1.3 This specification does not apply to steel strip asdescribed in Specification A109/A109M.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.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applicabil-ity of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards2A109/A109M Specification for Steel, Strip, Carbon 0.25Maximum Percent, Cold-RolledA370 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 forA941 Terminology Relating to Steel, Stainless Steel, RelatedAlloys, and FerroalloysE18 Test Methods for Rockwell Hardness of Metallic Ma-terialsE517 Test Method for Plastic Strain Ratio r for Sheet MetalE646 Test Method for Tensile Strain-Hardening Exponentsn -Values of Metallic Sheet Materials3. Terminology3.1 Definitions of Terms Specific to This Standard3.1.1 For definitions of other terms used in thisspecification, refer to Terminology A941.3.2 aging, nloss of ductility with an increase in hardness,yield strength, and tensile strength that occurs when steel thathas been slightly cold worked such as by temper rolling isstored for some time.3.2.1 DiscussionAging increases the tendency of a steel toexhibit stretcher strains and fluting.4. Classification4.1 Cold-rolled steel sheet is available in the followingdesignations4.1.1 Commercial Steel CS Types A, B, and D.4.1.2 Drawing Steel DS Types B and D.4.1.3 Structural Steel SS grades 25[170], 30[205], 33[230]Types 1 and 2, 40[275] Types 1 and 2, 50[340], 60[410],70[480], and 80[550].4.1.4 High-Strength Low-Alloy Steel HSLAS, in classes 1and 2, in grades 45[310], 50[340]. 55[380], 60[410], 65[450],70[480] and 80[550].4.2 When required for HSLAS steels, limitations on the useof one or more of the microalloy elements, titanium,columbium, vanadium, or molybdenum, shall be specified onthe order.4.3 Cold-rolled steel sheet is supplied for either exposed orunexposed applications. Within the latter category, cold-rolledsheet is specified either “temper rolled” or “annealed last.” Fordetails on processing, attributes and limitations, and inspectionstandards, refer to Specification A568/A568M.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 following1This 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 Nov. 1, 2012. Published November 2012. DOI10.1520/A1083_A1083M-12.2For 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 States1Copyright by ASTM Intl all rights reserved;5.1.1 ASTM specification number and year of issue;5.1.2 Name of material and designation cold-rolled steelsheet include grade, type, and class, as appropriate, for CS,DS, SS, HSLAS, see 4.1;5.1.2.1 When a type is not specified for CS or DS, Type Dwill be furnished see 4.1;5.1.2.2 When a class is not specified for HSLAS, Class 1will be furnished see 4.1;5.1.2.3 When a type is not specified for SS 33 [230] and SS40 [275], Type 1 will be furnished see 4.1;5.1.3 Classification either exposed, unexposed, temperrolled, or annealed last see 4.3;5.1.4 Finish see 9.1;5.1.5 Oiled or not oiled, as required see 9.1;5.1.5.1 Unless otherwise specified, the sheet shall be oiled.5.1.5.2 When required, specify the sheet to be furnished notoiled dry.5.1.6 Dimensions thickness, width, and whether cut lengthsor coils;NOTE 1Not all producers are capable of meeting all the limitationsof the thickness tolerance tables in Specification A568/A568M. Thepurchaser should contact the producer regarding possible limitations priorto placing an order.5.1.7 Coil size must include inside diameter, outsidediameter, and maximum 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, and HSLAS, a report is required ofheat analysis and mechanical properties as determined by thetension test, and5.1.12 Special requirements if any.5.1.12.1 When the purchaser requires thickness tolerancesfor 3/8 in. [10 mm] minimum edge distance see Supplemen-tary Requirement in Specification A568/A568M, this require-ment shall be specified in the purchase order or contract.NOTE 2A typical ordering description is as follows ASTM AXXXX-XX, cold rolled steel sheet, CS Type A, exposed, matte finish,oiled, 0.035 by 30 in. by coil, ID 24 in., OD 48 in., max weight 15 000 lbs,100 000 lb, for part No. 4560, Door Panel. Or ASTM A XXXXM-XX,cold-rolled steel sheet, SS grade 275, unexposed, matte finish, oiled, 0.88mm by 760 mm by 2440 mm, 10 000 kg, for shelf bracket.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 unless otherwise provided 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 in Table 2 andTable 3 for SS and HSLAS.7.2 Each of the elements listed in Table 1, Table 2, andTable 3 shall be included in the report of the heat analysis.When the amount of copper, nickel, chromium, or molybde-num is less than 0.02 , report the analysis as 0.02 or theactual determined value. When the amount of vanadium,columbium, or titanium is less than 0.008 , report theanalysis as 0.008 or the actual determined value. When theamount of boron is less than 0.0005 , report the analysis as0.0005 or the actual determined value.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 CS,and DS, are shown in Table 4.8.1.2 The material shall be capable of being bent, at roomtemperature, in any direction through 180 flat on itself withoutTABLE 1 Chemical CompositionAFor Cold Rolled Steel Sheet Designations CS and DS Heat Analysis, Element Maximum Unless Otherwise ShownDesignation C Mn P S Al Si CuFNi CrBMo V Cb TiCNBCSType AD, E0.10 0.70 0.030 0.035 ... ... 0.50 0.20 0.15 0.06 0.008 0.008 0.025 ... ...CSType BD0.02 to0.150.60 0.030 0.035 ... ... 0.50 0.20 0.15 0.06 0.008 0.008 0.025 ... ...CSType DD,E0.15 0.80 0.10 0.035 ... ... 0.50 0.30 0.30 0.15 0.008 0.008 0.025 ... ...DSType B0.02 to0.150.50 0.020 0.030 ... ... 0.50 0.20 0.15 0.06 0.008 0.008 0.025 ... ...DSType D0.15 0.60 0.030 0.035 ... ... 0.50 0.30 0.30 0.15 0.008 0.008 0.025 ... ...AWhere an ellipsis . . . appears in the table, there is no requirement, but the analysis result 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 or more carbon, titanium is permitted at the producer’s option, to the lesser of 3.4N 1.5S or 0.025 .DWhen an aluminum deoxidized steel is required for the application, it is permissible to order Commercial Steel CS to a minimum of 0.01 total aluminum.ESpecify Type B to avoid carbon levels below 0.02 .FF When copper steel is specified, a minimum of 0.20 is required. When copper steel is not specified, the copper limit is a maximum requirement.A1083/A1083M − 122Copyright by ASTM Intl all rights reserved;cracking on the outside of the bent portion see Section 14 ofTest Methods and Definitions A370. The bend test is not arequirement of delivery. However, if testing is performed bythe purchaser, material not conforming to the requirement shallbe subject to rejection.8.1.3 Sheet of these designations are subject to agingdependent upon processing factors such as the method ofannealing continuous annealing or box annealing, and chemi-cal composition. For additional information on aging, seeAppendix X1 of Specification A568/A568M.8.2 SS and HSLAS8.2.1 The available strength grades for SS, and HSLAS areshown in Table 5.8.2.2 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 [45000 kg], one test shall be made. When material rolled from heatTABLE 2 Chemical CompositionAFor Cold Rolled Steel Sheet Designations SS and HSLAS Heat Analysis, Element Maximum Unless Otherwise ShownDesignation C Mn P S Al Si V Cb Ti NSSBGrade 25 [170] 0.20 0.60 0.035 0.035 ... ... 0.008 0.008 0.025 ...Grade 30 [205] 0.20 0.60 0.035 0.035 ... ... 0.008 0.008 0.025 ...Grade 33 [230]Type 10.20 0.60 0.035 0.035 ... ... 0.008 0.008 0.025 ...Grade 33 [230]Type 20.15 0.60 0.20 0.035 ... ... 0.008 0.008 0.025 ...Grade 40 [275]Type 10.20 1.35 0.035 0.035 ... ... 0.008 0.008 0.025 ...Grade 40 [275]Type 20.15 0.60 0.20 0.035 ... ... 0.008 0.008 0.025 ...Grade 45 [310] 0.20 1.35 0.070 0.025 0.08 0.60 0.08 0.08 0.025 0.030Grade 50 [340] 0.20 1.35 0.035 0.035 ... ... 0.08 0.08 0.025 ...Grade 60 [410] 0.20 1.35 0.035 0.035 ... ... 0.08 0.08 0.025 ...Grade 70 [480] 0.20 1.35 0.035 0.035 ... ... 0.08 0.08 0.025 ...Grade 80 [550] 0.20 1.35 0.035 0.035 ... ... 0.08 0.08 0.025 ...HSLASCGrade 45 [310]Class 1.22 1.35 0.04 0.04 ... ... 0.005min0.005min0.005min...Grade 45 [310]Class 20.15 1.35 0.04 0.04 ... ... 0.005min0.005min0.005min...Grade 50 [340]Class 10.23 1.35 0.04 0.04 ... ... 0.005min0.005min0.005min...Grade 50 [340]Class 20.15 1.35 0.04 0.04 ... ... 0.005min0.005min0.005min...Grade 55 [380]Class 10.25 1.35 0.04 0.04 ... ... 0.005min0.005min0.005min...Grade 55 [380]Class 20.15 1.35 0.04 0.04 ... ... 0.005min0.005min0.005min...Grade 60 [410]Class 10.26 1.50 0.04 0.04 ... ... 0.005min0.005min0.005min...Grade 60 [410]Class 20.15 1.50 0.04 0.04 ... ... 0.005min0.005min0.005min...Grade 65 [480]Class 10.26 1.50 0.04 0.04 ... ... 0.005min0.005min0.005min...DGrade 65 [450]Class 20.15 1.50 0.04 0.04 ... ... 0.005min0.005min0.005min...DGrade 70 [480]Class 10.26 1.65 0.04 0.04 ... ... 0.005min0.005min0.005min...DGrade 70 [550]Class 20.15 1.65 0.04 0.04 ... ... 0.005min0.005min0.005min...DGrade 80 [550]Class 10.26 1.65 0.04 0.04 ... ... 0.005min0.005min0.005min...DGrade 80 [550]Class 20.15 1.65 0.04 0.04 ... ... 0.005min0.005min0.005min...DAWhere an ellipsis . . . appears in the table, there is no requirement but the analysis shall be reported.BTitanium is permitted for SS designations, at the producer’s option, to the lesser of 3.4N 1.5S or 0.025 .CHSLAS steels contain the strengthening elements columbium niobium, vanadium, titanium, and molybdenum added singly or in combination. The minimumrequirements only apply to the microalloy elements selected for strengthening of the steel.DThe purchaser has the option of restricting the nitrogen content. It should be noted that, depending on the microalloying scheme for example, use of vanadium ofthe producer, nitrogen is permitted as a deliberate addition. Consideration should be made for the use of nitrogen binding elements for example, vanadium, titanium.A1083/A1083M − 123Copyright by ASTM Intl all rights reserved;differs 0.050 in. [1.27 mm] or more in thickness, one tensiontest shall be made from the thickest and thinnest materialregardless 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.8.2.2.5 Tension test specimens shall be taken from a loca-tion approximately halfway between the center of the sheet andthe edge of the material as rolled.8.2.2.6 Tension test samples shall be taken with the length-wise axis of the test specimen parallel to the rolling directionlongitudinal test.8.2.2.7 Test MethodYield strength shall be determined byeither the 0.2 offset method or the 0.5 extension underload method unless otherwise specified.8.3 Bending Properties8.3.1 Suggested minimum inside radii for cold bending arelisted in Appendix X1 and are discussed in more detail inSpecification A568/A568M Section 6. Where a tighter bendradius is required, where curved or offset bends are involved,or where stretching or drawing are also a consideration, theproducer shall be consulted.9. Finish and Appearance9.1 Surface Finish9.1.1 Unless otherwise specified, the sheet shall have amatte finish. When required, specify the appropriate surfacetexture and condition. For additional information, see theFinish and Condition section of Specification A568/A568M.For additional information see “Finish and Condition” sectionof Specification A568/A568M.10. Retests and Disposition of Non-

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