1、Designation: A1083/A1083M 12 (Reapproved 2017)Standard 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 indi
2、cates 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, car
3、bon, 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 Sp
4、ecification 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
5、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 applica-bility of regulatory limi
6、tations prior to use.1.6 This international standard was developed in accor-dance with internationally recognized 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
7、 TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A109/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,Struct
8、ural, 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
9、Method for Tensile Strain-Hardening Exponents(n -Values) of Metallic Sheet Materials3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 For definitions of other terms used in thisspecification, refer to Terminology A941.3.2 aging, nloss of ductility with an increase in hardness,yi
10、eld 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
11、the followingdesignations:4.1.1 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 25170, 30205, 33230Types 1 and 2, 40275 Types 1 and 2, 50340, 60410,70480, and 80550).4.1.4 High-Strength Low-Alloy Steel (HSLAS, in classes 1and 2, in gra
12、des 45310, 50340. 55380, 60410, 65450,70480 and 80550.4.2 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 orunexpose
13、d applications. Within the latter category, cold-rolledsheet is specified either “temper rolled” or “annealed last.” For1This 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 Shee
14、t and Strip.Current edition approved Sept. 1, 2017. Published September 2017. Originallyapproved in 2012. Last previous edition approved in 2012 as A1083/A1083M 12.DOI: 10.1520/A1083_A1083M-12R17.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at
15、 serviceastm.org. For Annual Book of ASTMStandards volume information, 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 accorda
16、nce with internationally recognized principles on standardization 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.1details on processing, attributes
17、and limitations, and inspectionstandards, refer to Specification A568/A568M.5. Ordering Information5.1 It is the purchasers responsibility to specify in thepurchase order all ordering information necessary to describethe required material. Examples of such information include,but are not limited to,
18、 the following: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
19、.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 O
20、iled 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 li
21、mitationsof 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
22、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 thetens
23、ion 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 orde
24、ring 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 f
25、inish, 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 Com
26、position7.1 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
27、 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. W
28、hen theamount of boron is less than 0.0005 %, report the analysis as0.0005 % or the actual determined value.TABLE 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
29、, 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
30、 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 producers option, to 0.25 % maximum when the carbon content is less
31、than or equal to 0.05 %.CFor steels containing 0.02 % or more carbon, titanium is permitted at the producers 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 % tot
32、al 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 12 (2017)27.3 Sheet steel grades defined by this specification aresuitable for
33、 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 DS:8.1.1 Typical nonmandatory mechanical
34、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 withoutcracking on the outside of the bent portion (see Section 14 ofTest Methods and Definitions A370). The bend test is not arequirement
35、 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
36、chemi-cal composition. For additional information on aging, seeAppendix X1 of Specification A568/A568M.8.2 SS and HSLAS:8.2.1 The available strength grades for SS, and HSLAS areshown in Table 5.TABLE 2 Chemical CompositionAFor Cold Rolled Steel Sheet Designations SS and HSLAS% Heat Analysis, Element
37、 Maximum Unless Otherwise ShownDesignation C Mn P S Al Si V Cb Ti NSS:BGrade 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 230Type 10.20 0.60 0.035 0.035 . . 0.008 0.008 0.025 .Grade 33 230Type 20.15 0.60 0.20 0.035 . . 0.008 0
38、.008 0.025 .Grade 40 275Type 10.20 1.35 0.035 0.035 . . 0.008 0.008 0.025 .Grade 40 275Type 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.
39、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 .HSLAS:CGrade 45 310Class 1.22 1.35 0.04 0.04 . . 0.005min0.005min0.005min.Grade 45 310Class 20.15 1.35 0.04 0.04 . . 0.005min0.005min0.005min.Grade 50 340Class 10.23 1.35 0.
40、04 0.04 . . 0.005min0.005min0.005min.Grade 50 340Class 20.15 1.35 0.04 0.04 . . 0.005min0.005min0.005min.Grade 55 380Class 10.25 1.35 0.04 0.04 . . 0.005min0.005min0.005min.Grade 55 380Class 20.15 1.35 0.04 0.04 . . 0.005min0.005min0.005min.Grade 60 410Class 10.26 1.50 0.04 0.04 . . 0.005min0.005min
41、0.005min.Grade 60 410Class 20.15 1.50 0.04 0.04 . . 0.005min0.005min0.005min.Grade 65 480Class 10.26 1.50 0.04 0.04 . . 0.005min0.005min0.005min.DGrade 65 450Class 20.15 1.50 0.04 0.04 . . 0.005min0.005min0.005min.DGrade 70 480Class 10.26 1.65 0.04 0.04 . . 0.005min0.005min0.005min.DGrade 70 550Clas
42、s 20.15 1.65 0.04 0.04 . . 0.005min0.005min0.005min.DGrade 80 550Class 10.26 1.65 0.04 0.04 . . 0.005min0.005min0.005min.DGrade 80 550Class 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.B
43、Titanium is permitted for SS designations, at the producers 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 el
44、ements 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
45、 for the use of nitrogen binding elements (for example, vanadium, titanium).A1083/A1083M 12 (2017)38.2.2 Tension Tests:8.2.2.1 RequirementsMaterial as represented by the testspecimen shall conform to the mechanical property require-ments specified in Table 4. These requirements do not apply tothe un
46、cropped 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 heatdiffers 0.050 in. 1.27 mm or mor
47、e 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
48、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 direction(longitu
49、dinal 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 Properties:8.3.1 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, the
