ASTM A1008 A1008M-2018 Standard Specification for Steel Sheet Cold-Rolled Carbon Structural High-Strength Low-Alloy High-Strength Low-Alloy with Improved Formability Solution Harde.pdf

1、Designation: A1008/A1008M 16A1008/A1008M 18Standard 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 n

2、umber 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 s

3、tandard has been 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 improvedformability, solution hardened, and bake hardenable steel sheet, in coils and cut leng

4、ths.1.2 Cold rolled steel sheet is available in the designations as listed in 4.1.1.3 This specification does not apply to steel strip as described in Specification A109/A109M.1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in

5、 eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.1.5 This international standard was developed in accordance with internationally recognized principles on st

6、andardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A109/A109M Specification for Steel, Strip, Ca

7、rbon (0.25 Maximum Percent), Cold-RolledA370 Test Methods and Definitions for Mechanical Testing of Steel ProductsA568/A568M Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,General Requirements forA941 Terminology Relating to Steel, Stainl

8、ess Steel, Related Alloys, and FerroalloysE18 Test Methods for Rockwell Hardness of Metallic MaterialsE517 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 Speci

9、fic to This Standard:3.1.1 For definitions of other terms used in this specification, refer to Terminology A941.3.1.2 aging, nloss of ductility with an increase in hardness, yield strength, and tensile strength that occurs when steel that hasbeen slightly cold worked (such as by temper rolling) is s

10、tored for some time.3.1.2.1 DiscussionAging increases the tendency of a steel to exhibit stretcher strains and fluting.1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee A01.19on Steel Sheet

11、 and Strip.Current edition approved Sept. 1, 2016Sept. 1, 2018. Published September 2016September 2018. Originally approved in 2000. Last previous edition approved in 20152016as A1008/A1008M 15.A1008/A1008M 16. DOI: 10.1520/A1008_A1008M-16.10.1520/A1008_A1008M-18.2 For referencedASTM standards, visi

12、t theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standar

13、d an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM i

14、s to be considered the official document.*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 States13.1.3 bake hardenable steel, nsteel in which significant aging is realized when

15、moderate heat treatment, such as that used forpaint baking, follows straining or cold working.3.1.4 inclusion control, nthe process of reducing the volume fraction of inclusions or modifying the shape of inclusions toimprove formability, weldability, and machinability.3.1.4.1 DiscussionInclusions, e

16、specially those elongated during the rolling process, create the conditions for initiating or propagating cracks, or both,when the material is stretched or bent during the manufacture of a part.The adverse effects of inclusions are minimized by reducingthe content of inclusions in the steel or by al

17、tering the shape of inclusions, or both, through the use of additions during thesteelmaking process that change the elongated shape of the inclusions to less harmful small, well dispersed globular inclusions.3.1.5 solid-solution hardened steel or solution hardened steel, nsteel strengthened through

18、additions of elements, such as Mn,P, or Si, that can be dissolved within the crystalline structure of steels.3.1.5.1 DiscussionAlloying elements that form a solid-solution with iron provide strengthening as a result of local distortions in atomic arrangements,which arise as a result of the mismatch

19、between the atomic sizes of such elements and that of iron.3.1.6 stabilization, naddition of one or more nitride- or carbide-forming elements, or both, such as titanium and columbium,to control the level of the interstitial elements of carbon and nitrogen in the steel.3.1.6.1 DiscussionStabilizing i

20、mproves formability and increases resistance to aging.3.1.7 vacuum degassing, nprocess of refining liquid steel in which the liquid is exposed to a vacuum as part of a specialtechnique for removing impurities or for decarburizing the steel.3.1.8 Special Forming Steel (SFS), nsteel ordered to 1010 ch

21、emistry or greater levels of carbon, manganese or both, whichexhibits 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 enhanced formability. Due to gr

22、eater carbon content, SFS 1020 is not as formable as SFS 1010.4. Classification4.1 Cold-rolled steel sheet is available in the following designations:4.1.1 Commercial Steel (CS Types A, B, and C),4.1.2 Commercial Steel (CS Types A and B combined with chemistry grade in accordance with Specification

23、A568/A568MTable X2.3,4.1.3 Drawing Steel (DS Types A and B, as specified in Table 1),4.1.4 Drawing Steel (DS Type A and B combined with chemistry grade in accordance with Specification A568/A568M TableX2.3,4.1.5 Commercial Steel Chemistry grade in accordance with Specification A568/A568M Table X2.1,

24、 with no type specified (CS 1005, CS 1008, CS 1020, and so forth),4.1.6 Special Forming Steel (SFS), chemistry as specified in Table 1 with carbon 5.1.2 Name of material and designation (cold-rolled steel sheet) (include grade, type, and class, as appropriate, for CS, DS,DDS, EDDS, SFS, SS, HSLAS, H

25、SLAS-F, SHS, or BHS) (see 4.1);5.1.2.1 When a Chemistry grade is specified in accordance with Specification A568/A568M Table X2.3, the grade shall befurnished as CS Type B 1008, DS Type A 1005, and so forth,5.1.2.2 When a Chemistry grade is specified in accordance with Specification A568/A568M Table

26、 X2.1, with no reference toCS Type A, CS Type B, DS Type A, DS Type B, or SFS, the grade shall be furnished as CS 1005, CS 1008, CS 1020, andso forth, and meet chemistry specified in accordance with Specification A568/A568M Table X2.1,5.1.2.3 When a type is not specified for CS or DS and there is no

27、 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 designation shall also be specified in accordance with SpecificationA568/A568M Table X2.1 (in other words, (that is, 1010, 1020, and so forth), or carb

28、on 5.1.2.6 When a type is not specified for SS 33 230 and SS 40 275, Type 1 will be furnished (see 4.1);TABLE 1 Chemical Compositionfor Cold Rolled Steel Sheet Designations CS, DS, DDS, EDDS, and SFS% Heat Analysis,ElementMaximum UnlessOtherwise ShownDesignation C Mn P S Al Si Cu Ni CrB Mo V Cb/NbL

29、TiC N B% Heat Analysis, Element Maximum Unless Otherwise ShownDesignation C Mn P S Al Si Cu Ni CrB Mo V Cb/NbL TiC N BCS Type AD,E,F,G 0.10 0.60 0.025 0.035 A A 0.20H 0.20 0.15 0.06 0.008 0.008 0.025 A ACS Type BD 0.02 to0.150.60 0.025 0.035 A A 0.20H 0.20 0.15 0.06 0.008 0.008 0.025 A ACS Type BD 0

30、.020.15 0.60 0.025 0.035 A A 0.20H 0.20 0.15 0.06 0.008 0.008 0.025 A ACS Type CD,E,F,G 0.08 0.60 0.10 0.035 A A 0.20H 0.20 0.15 0.06 0.008 0.008 0.025 A ADS Type AE,I 0.08 0.50 0.020 0.020 0.01 min A 0.20 0.20 0.15 0.06 0.008 0.008 0.025 A ADS Type B 0.02 to0.080.50 0.020 0.020 0.02 min A 0.20 0.20

31、 0.15 0.06 0.008 0.008 0.025 A ADS Type B 0.020.08 0.50 0.020 0.020 0.02 min A 0.20 0.20 0.15 0.06 0.008 0.008 0.025 A ADDSF,G 0.06 0.50 0.020 0.020 0.01 min A 0.20 0.20 0.15 0.06 0.008 0.008 0.025 A AEDDSJ 0.02 0.40 0.020 0.020 0.01 min A 0.10 0.10 0.15 0.03 0.10 0.10 0.15 A ASFS K K 0.020 0.020 0.

32、01 min A 0.20 0.20 0.15 0.06 0.008 0.008 0.025 A AA There is no specified limit, but the analysis shall be reported.B Chromium is permitted, at the producers option, to 0.25 % maximum when the carbon content is less than or equal to 0.05 %.C For steels containing 0.02 % or more carbon, titanium is p

33、ermitted at the producers option, to the lesser of 3.4N + 1.5S or 0.025 %.D When 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.E Specify Type B to avoid carbon levels below 0.02 %.F It is permissib

34、le to furnish as a vacuum degassed or chemically stabilized steel, or both, at the producers option.G For carbon levels less than or equal to 0.02 %, it is permissible to use vanadium, columbium or titanium, or a combination thereof, as stabilizing elements at theproducers option. In such cases, the

35、 applicable limit for vanadium or columbium shall be 0.10 % max. and the limit on titanium shall be 0.15 % max.H When copper steel is specified, the copper limit is a minimum requirement. When copper steel is not specified, the copper limit is a maximum requirement.I If produced utilizing a continuo

36、us anneal process, stabilized steel is permissible at the producers option, and Footnotes F and G apply.J Shall be furnished as a vacuum degassed and stabilized steel.K Carbon 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, and whether cut l

37、engths or coils);NOTE 1Not all producers are capable of meeting all the limitations of the thickness tolerance tables in Specification A568/A568M. The purchasershould contact the producer regarding possible limitations prior to placing an order.5.1.7 Coil size (must include inside diameter, outside

38、diameter, 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, if requested, for CS, DS, DDS, and EDDS. For materials with requiredmechanical properties, SS, HSLAS, HSLA

39、S-F, SHS, and BHS, a report 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 tolerances for 38 in. 10 mm minimum edge distance (see SupplementaryRequirement in Specification

40、 A568/A568M), this requirement shall be specified in the purchase order or contract.5.1.12.2 Tighter requirements can be specified based on agreement between seller and purchaser.NOTE 2A typical ordering description is as follows: ASTM A1008-XX, cold rolled steel sheet, CS Type A, exposed, matte fin

41、ish, oiled, 0.035 by 30in. by coil, ID 24 in., OD 48 in., max weight 15 000 lbs, 100 000 lb, for part No. 4560, Door Panel.or:ASTMA1008M-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 shelf bracket.6. General Requirements for D

42、elivery6.1 Material furnished under this specification shall conform 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 the chemical composition requirements of t

43、he appropriate designation shownin 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, and Specification A568/A568M Table X2.3 shall be included in the reportof the heat analysis. When the amount of copper, ni

44、ckel, chromium, or molybdenum is less than 0.02 %, report the analysis as0.02 % or the actual 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 the amount of boron is less than 0.0005 %, repo

45、rt the analysis as0.0005 % or the actual determined value.7.3 Sheet steel grades defined by this specification are suitable for welding if appropriate welding conditions are selected. Forcertain welding processes, if more restrictive composition limits are desirable, they shall be specified at the t

46、ime of inquiry andconfirmed 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 X2.3 areshown in Table 3.8.1.2 The material represented by all grades specified in Table 1

47、and Specification A568/A568M Table X2.3 shall be capableof being bent, at room temperature, in any direction through 180 flat on itself without cracking on the outside of the bent portion(see Section 14 of Test Methods and Definitions A370). The bend test is not a requirement of delivery. However, i

48、f testing isperformed by the purchaser, material not conforming to the requirement shall be subject to rejection.8.1.3 Sheet of these designations except for EDDS are subject to aging dependent upon processing factors such as the methodof annealing (continuous annealing or box annealing), and chemic

49、al composition. For additional information on aging, seeAppendix X1 of Specification A568/A568M.8.1.4 EDDS steel is stabilized to be nonaging and so is not subject to stretcher strains and fluting. Other steels are processedto be nonaging; please consult your supplier.8.2 SS, HSLAS, HSLAS-F, SHS, and BHS:8.2.1 The available strength grades for SS, HSLAS and HSLAS-F are shown in Table 4.8.2.2 The available strength grades for SHS and BHS are shown in Table 5.8.2.3 Tension Tests:8.2.3.1 RequirementsMaterial as represented by th