ASTM A1008 A1008M-2016 Standard Specification for Steel Sheet Cold-Rolled Carbon Structural High-Strength Low-Alloy High-Strength Low-Alloy with Improved Formability Solution Harde.pdf

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1、Designation: A1008/A1008M 16Standard Specification forSteel, Sheet, Cold-Rolled, Carbon, Structural, High-StrengthLow-Alloy, High-Strength Low-Alloy with ImprovedFormability, Solution Hardened, and Bake Hardenable1This standard is issued under the fixed designation A1008/A1008M; the number immediate

2、ly 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 bee

3、n approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This specification covers cold-rolled, carbon, structural,high-strength low-alloy, high-strength low-alloy with im-proved formability, solution hardened, and bake hardenablesteel sheet, in coils and cut lengths.1.2 Cold ro

4、lled steel sheet is available in the designations aslisted 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 no

5、t 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 Standards:2A109/A109M Specification for Steel, Strip, Carbon (0.25Maximum Percent), Cold-RolledA

6、370 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 FerroalloysE1

7、8 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 Exponents(n -Values) of Metallic Sheet Materials3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 For definitions o

8、f other terms used in thisspecification, refer to Terminology A941.3.1.2 aging, nloss of ductility with an increase inhardness, yield strength, and tensile strength that occurs whensteel that has been slightly cold worked (such as by temperrolling) is stored for some time.3.1.2.1 DiscussionAging inc

9、reases the tendency of a steelto exhibit stretcher strains and fluting.3.1.3 bake hardenable steel, nsteel in which significantaging is realized when moderate heat treatment, such as thatused for paint baking, follows straining or cold working.3.1.4 inclusion control, nthe process of reducing thevol

10、ume fraction of inclusions or modifying the shape ofinclusions to improve formability, weldability, and machinabil-ity.3.1.4.1 DiscussionInclusions, especially those elongatedduring the rolling process, create the conditions for initiating orpropagating cracks, or both, when the material is stretche

11、d orbent during the manufacture of a part. The adverse effects ofinclusions are minimized by reducing the content of inclusionsin the steel or by altering the shape of inclusions, or both,through the use of additions during the steelmaking processthat change the elongated shape of the inclusions to

12、lessharmful small, well dispersed globular inclusions.3.1.5 solid-solution hardened steel or solution hardenedsteel, nsteel strengthened through additions of elements, suchas Mn, P, or Si, that can be dissolved within the crystallinestructure of steels.3.1.5.1 DiscussionAlloying elements that form a

13、 solid-solution with iron provide strengthening as a result of localdistortions in atomic arrangements, which arise as a result ofthe mismatch between the atomic sizes of such elements andthat of iron.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Re

14、lated Alloys and is the direct responsibility of SubcommitteeA01.19 on Steel Sheet and Strip.Current edition approved Sept. 1, 2016. Published September 2016. Originallyapproved in 2000. Last previous edition approved in 2015 as A1008/A1008M 15.DOI: 10.1520/A1008_A1008M-16.2For referenced ASTM stand

15、ards, 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM Interna

16、tional, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.6 stabilization, naddition of one or more nitride- orcarbide-forming elements, or both, such as titanium andcolumbium, to control the level of the interstitial elements ofcarbon and nitrogen in the steel.

17、3.1.6.1 DiscussionStabilizing improves formability andincreases resistance to aging.3.1.7 vacuum degassing, nprocess of refining liquid steelin which the liquid is exposed to a vacuum as part of a specialtechnique for removing impurities or for decarburizing thesteel.3.1.8 Special Forming Steel (SFS

18、), nsteel ordered to 1010chemistry or greater levels of carbon, manganese or both,which exhibits enhanced formability or mechanical properties.3.1.8.1 DiscussionSteel grades such as CS 1010 or CS 1020 for example, adhere to chemistry requirements only,whereas SFS 1010 or SFS 1020, also provide enhan

19、cedformability. Due to greater carbon content, SFS 1020 is notas formable as SFS 1010.4. Classification4.1 Cold-rolled steel sheet is available in the followingdesignations:4.1.1 Commercial Steel (CS Types A, B, and C),4.1.2 Commercial Steel (CS TypesAand B combined withchemistry grade in accordance

20、 with 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 Type A and B combined withchemistry grade in accordance with Specification A568/A568M Table X2.3,4.1.5 Commercial Steel Chemistry grade in accordance withSpecification A56

21、8/A568M Table X2.1, with no type specified(CS 1005, CS 1008, CS 1020, and so forth),4.1.6 Special Forming Steel (SFS), chemistry as specified inTable 1 with carbon 5.1.2 Name of material and designation (cold-rolled steelsheet) (include grade, type, and class, as appropriate, for CS,DS, DDS, EDDS, S

22、FS, SS, HSLAS, HSLAS-F, SHS, or BHS)(see 4.1);5.1.2.1 When a Chemistry grade is specified in accordancewith Specification A568/A568M Table X2.3, the grade shall befurnished as CS Type B 1008, DS Type A 1005, and soforth,5.1.2.2 When a Chemistry grade is specified in accordancewith Specification A568

23、/A568M Table X2.1, with no referenceto CS Type A, CS Type B, DS Type A, DS Type B, or SFS, thegrade shall be furnished as CS 1005, CS 1008, CS 1020,and so forth, and meet chemistry specified in accordance withSpecification A568/A568M Table X2.1,5.1.2.3 When a type is not specified for CS or DS and t

24、hereis no reference to a chemistry grade such as 1005, 1006, and soforth, Type B will be furnished (see 4.1);5.1.2.4 When SFS is specified, a chemistry grade designa-tion shall also be specified in accordance with SpecificationA568/A568M Table X2.1 (in other words, 1010, 1020, and soforth), or carbo

25、n 5.1.2.6 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 9.2);5.1.6 Dimensions (thickness, width,

26、and whether cut lengthsor coils);NOTE 1Not all producers are capable of meeting all the limitations ofthe thickness tolerance tables in Specification A568/A568M. The pur-chaser should contact the producer regarding possible limitations prior toplacing an order.5.1.7 Coil size (must include inside di

27、ameter, 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, DS, DDS, and EDDS. For materials withrequired mechanical properties, S

28、S, HSLAS, HSLAS-F, SHS,and BHS, a report is required of heat analysis and mechanicalproperties as determined by the tension test, and5.1.12 Special requirements (if any).5.1.12.1 When the purchaser requires thickness tolerancesfor38 in. 10 mm minimum edge distance (see SupplementaryRequirement in Sp

29、ecification 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 A1008-XX, cold rolled steel sheet, CS TypeA, exposed, m

30、atte finish, oiled, 0.035by 30 in. by coil, ID 24 in., OD 48 in., max weight 15 000 lbs, 100 000lb, for part No. 4560, Door Panel.or:ASTM A 1008M-XX, cold-rolled steel sheet, SS grade 275, unexposed,matte finish, oiled, 0.88 mm by 760 mm by 2440 mm, 10 000 kg, for shelfbracket.6. General Requirement

31、s 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 requiremen

32、ts of the appropriate desig-nation shown in Table 1 for CS, DS, DDS, EDDS, and SFS,and in Table 2 for SS, HSLAS, HSLAS-F, SHS, and BHS.7.2 Each of the elements listed in Tables 1 and 2, andSpecification A568/A568M Table X2.3 shall be included in thereport of the heat analysis. When the amount of cop

33、per, 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 %

34、,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 th

35、etime of inquiry and confirmed at the time of ordering.8. Mechanical Properties8.1 CS, DS, DDS, and EDDS:8.1.1 Typical nonmandatory mechanical properties for CS,DS, DDS, EDDS, and Specification A568/A568M Table X2.3are shown in Table 3.8.1.2 The material represented by all grades specified inTable 1

36、 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 Section 14 of Test Methods and Defini-tions A370). The bend test is not a requirement of delivery.However, i

37、f testing is performed by the purchaser, material notconforming to the requirement shall be subject to rejection.8.1.3 Sheet of these designations except for EDDS aresubject to aging dependent upon processing factors such as themethod of annealing (continuous annealing or box annealing),A1008/A1008M

38、 163TABLE 2 Chemical Compositionfor Cold Rolled Steel Sheet Designations SS, HSLAS, HSLAS-F, SHS, and BHS% Heat Analysis, Element Maximum Unless Otherwise ShownDesignation C Mn P S Al Si CuBNi Cr Mo V Cb/NbGTi NSS:CGrade 25 170 0.20 0.60 0.035 0.035AA0.20 0.20 0.15 0.06 0.008 0.008 0.025AGrade 30 20

39、5 0.20 0.60 0.035 0.035AA0.20 0.20 0.15 0.06 0.008 0.008 0.025AGrade 33 230 Type 1 0.20 0.60 0.035 0.035AA0.20 0.20 0.15 0.06 0.008 0.008 0.025AGrade 33 230 Type 2 0.15 0.60 0.20 0.035AA0.20 0.20 0.15 0.06 0.008 0.008 0.025AGrade 40 275 Type 1 0.20 1.35 0.035 0.035AA0.20 0.20 0.15 0.06 0.008 0.008 0

40、.025AGrade 40 275 Type 2 0.15 0.60 0.20 0.035AA0.20 0.20 0.15 0.06 0.008 0.008 0.025AGrade 45 310 0.20 1.35 0.070 0.025 0.08 0.60 0.20 0.20 0.15 0.06 0.008 0.008 0.008 0.030Grade 50 340 0.20 1.35 0.035 0.035AA0.20 0.20 0.15 0.06 0.008 0.008 0.025AGrade 60 410 0.20 1.35 0.035 0.035AA0.20 0.20 0.15 0.

41、06 0.008 0.008 0.025AGrade 70 480 0.20 1.35 0.035 0.035AA0.20 0.20 0.15 0.06 0.008 0.008 0.025AGrade 80 550 0.20 1.35 0.035 0.035AA0.20 0.20 0.15 0.06 0.008 0.008 0.025AHSLAS:DGrade 45 310 Class 1 0.22 1.65 0.04 0.04AA0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 minAGrade 45 310 Class 2 0.15 1.65 0

42、.04 0.04AA0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 minAGrade 50 340 Class 1 0.23 1.65 0.04 0.04AA0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 minAGrade 50 340 Class 2 0.15 1.65 0.04 0.04AA0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 minAGrade 55 380 Class 1 0.25 1.65 0.04 0.04AA0.20 0.20 0.15

43、 0.06 0.005 min 0.005 min 0.005 minAGrade 55 380 Class 2 0.15 1.65 0.04 0.04AA0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 minAGrade 60 410 Class 1 0.26 1.65 0.04 0.04AA0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 minAGrade 60 410 Class 2 0.15 1.65 0.04 0.04AA0.20 0.20 0.15 0.06 0.005 min 0.005 mi

44、n 0.005 minAGrade 65 450 Class 1 0.26 1.65 0.04 0.04AA0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 minEGrade 65 450 Class 2 0.15 1.65 0.04 0.04AA0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 minEGrade 70 480 Class 1 0.26 1.65 0.04 0.04AA0.20 0.20 0.15 0.16 0.005 min 0.005 min 0.005 minEGrade 70 480

45、 Class 2 0.15 1.65 0.04 0.04AA0.20 0.20 0.15 0.16 0.005 min 0.005 min 0.005 minEHSLAS-F:DGrade 50 340 and 60 410 0.15 1.65 0.020 0.025AA0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 minEGrade 70 480 and 80 550 0.15 1.65 0.020 0.025AA0.20 0.20 0.15 0.16 0.005 min 0.005 min 0.005 minEAASHSF0.12 1.50 0

46、.12 0.030AA0.20 0.20 0.15 0.06 0.008 0.008 0.008AAABHSF0.12 1.50 0.12 0.030AA0.20 0.20 0.15 0.06 0.008 0.008 0.008AAThere is no specified limit, but the analysis shall be reported.BWhen copper is specified, the copper limit is a minimum requirement. When copper steel is not specified, the copper lim

47、it is a maximum requirement.CTitanium is permitted for SS designations, at the producers option, to the lesser of 3.4N + 1.5S or 0.025 %.DHSLAS and HSLAS-F steels contain the strengthening elements columbium (niobium), vanadium, titanium, and molybdenum added singly or in combination. Theminimum req

48、uirements only apply to the microalloy elements selected for strengthening of the steel.EThe purchaser has the option of restricting the nitrogen content. It should be noted that, depending on the microalloying scheme (for example, use of vanadium) of theproducer, nitrogen may be a deliberate additi

49、on. Consideration should be made for the use of nitrogen binding elements (for example, vanadium, titanium).FFor carbon levels less than or equal to 0.02 % vanadium, columbium, or titanium, or a combination thereof, are permitted to be used as stabilizing elementsattheproducers option. In such cases, the applicable limit for vanadium and columbium shall be 0.10 % max., and the limit for titanium shall be 0.15 % max.GColumbium (Cb) and Niobium (Nb) are considered interchangeable n