ASTM A1008 A1008M-2015 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 13A1008/A1008M 15Standard 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.2. Referenced Documents2.1 ASTM Standards:2A109/A109M Specification for Steel, Strip, Carbon (0.25 Maximum P

6、ercent), 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, Stainless Steel, Related A

7、lloys, 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 Specific to This Standard

8、:3.1.1 For definitions of other terms used in this specification, refer to Terminology A941.3.1.2 agingaging, nloss of ductility with an increase in hardness, yield strength, and tensile strength that occurs when steelthat has been slightly cold worked (such as by temper rolling) is stored for some

9、time.3.1.2.1 DiscussionAging increases the tendency of a steel to exhibit stretcher strains and fluting.3.1.3 bake hardenable steelsteel, nsteel in which significant aging is realized when moderate heat treatment, such as thatused for paint baking, follows straining or cold working.1 This specificat

10、ion is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee A01.19on Steel Sheet and Strip.Current edition approved Oct. 1, 2013May 1, 2015. Published October 2013May 2015. Originally approved in 2000. Last previous

11、edition approved in 20122013 asA1008/A1008M 12a.A1008/A1008M 13. DOI: 10.1520/A1008_A1008M-13.10.1520/A1008_A1008M-15.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to

12、 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 standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes

13、 accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr H

14、arbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.4 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, especially those elon

15、gated during the rolling process, create the conditions for initiating and/or propagating cracks orpropagating cracks, or both, when the material is stretched or bent during the manufacture of a part. The adverse effects ofinclusions are minimized by reducing the content of inclusions in the steel a

16、nd/oror by altering the shape of inclusions inclusions,or both, through the use of additions during the steelmaking process that change the elongated shape of the inclusions to lessharmful small, well dispersed globular inclusions.3.1.5 solid-solution hardened steel or solution hardened steelsteel,

17、nsteel strengthened through additions of elements, suchas 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

18、as a result of the mismatch between the atomic sizes of such elements and that of iron.3.1.6 stabilizationstabilization, naddition of one or more nitride- or carbide-forming elements, or both, such as titanium andcolumbium, to control the level of the interstitial elements of carbon and nitrogen in

19、the steel.3.1.6.1 DiscussionStabilizing improves formability and increases resistance to aging.3.1.7 vacuum degassingdegassing, nprocess of refining liquid steel in which the liquid is exposed to a vacuum as part ofa special technique for removing impurities or for decarburizing the steel.4. Classif

20、ication4.1 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 per Specification A568/A568M Table X2.3,4.1.3 Drawing Steel (DS Types A and B, as specified in Table 1),T

21、ABLE 1 Chemical CompositionAForfor Cold Rolled Steel Sheet Designations CS, DS, DDS, and EDDS% Heat Analysis, Element Maximum Unless Otherwise ShownDesignation C Mn P S Al Si Cu Ni CrB Mo V Cb TiC N BCS Type AD,E,F,G 0.10 0.60 0.030 0.035 . . . . . . 0.20H 0.20 0.15 0.06 0.008 0.008 0.025 . . . . .

22、.CS Type AD,E,F,G 0.10 0.60 0.025 0.035 . . . . . . 0.20H 0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .CS Type BD 0.02 to0.150.60 0.030 0.035 . . . . . . 0.20H 0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .CS Type BD 0.02 to0.150.60 0.025 0.035 . . . . . . 0.20H 0.20 0.15 0.06 0.008 0.008 0.025 . . . .

23、 . .CS Type CD,E,F,G 0.08 0.60 0.10 0.035 . . . . . . 0.20H 0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .DS Type AE,I 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 . . . . . .DS Type AE,I 0.08 0.50 0.020 0.020 0.01 min . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . . . .

24、 .DS Type B 0.02 to0.080.50 0.020 0.030 0.02 min . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .DS Type B 0.02 to0.080.50 0.020 0.020 0.02 min . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .DDSF,G 0.06 0.50 0.020 0.025 0.01 min . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .D

25、DSF,G 0.06 0.50 0.020 0.020 0.01 min . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .EDDSJ 0.02 0.40 0.020 0.020 0.01 min . . . 0.10 0.10 0.15 0.03 0.10 0.10 0.15 . . . . . .A Where an ellipsis (. . .) appears in the table, there is no requirement, but the analysis result shall be reported.B

26、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 permitted at the producers option, to the lesser of 3.4N + 1.5S or 0.025 %.D When an aluminum deoxidized steel is requi

27、red 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 permissible to furnish as a vacuum degassed or chemically stabilized steel, or both, at the producers option.G For carbon level

28、s 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 applicable limit for vanadium or columbium shall be 0.10 % max. and the limit on titanium shall be 0.15 % max.H When

29、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 continuous anneal process, stabilized steel is permissible at the producers option, and Footnotes F and G apply.J Shall be fur

30、nished as a vacuum degassed and stabilized steel.A1008/A1008M 1524.1.4 Drawing Steel (DS Type A and B combined with chemistry grade per Specification A568/A568M Table X2.3,4.1.5 Commercial Steel Chemistry grade per Specification A568/A568M Table X2.1, with no type specified (CS 1005, CS 1008, CS 102

31、0, etc.), and so forth),4.1.6 Deep Drawing Steel (DDS),4.1.7 Extra Deep Drawing Steel (EDDS),4.1.8 Structural Steel (SS grades 25170, 30205, 33230 Types 1 and 2, 40275 Types 1 and 2, 45310, 50340, 60410,70480, and 80550).4.1.9 High-Strength Low-Alloy Steel (HSLAS, in classes 1 and 2, in grades 45310

32、, 50340. 55380, 60410, 65450, and70480 in Classes 1 and 2), and4.1.10 High-Strength Low-Alloy Steel with Improved Formability (HSLAS-F grades 50340, 60410, 70480, and 80550).4.1.10.1 HSLAS-F steel has improved formability when compared to HSLAS. The steel is fully deoxidized, made to fine grainpract

33、ice and includes microalloying elements such as columbium, vanadium, zirconium, etc. and so forth. The steel shall be treatedto achieve inclusion control.4.1.11 Solution hardened steel (SHS), and4.1.12 Bake hardenable steel (BHS).4.2 When required for HSLAS and HSLAS-F steels, limitations on the use

34、 of one or more of the microalloy elements shall bespecified on the order.4.3 Cold-rolled steel sheet is supplied for either exposed or unexposed applications. Within the latter category, cold-rolled sheetis specified either “temper rolled” or “annealed last.” For details on processing, attributes a

35、nd limitations, and inspection standards,refer to Specification A568/A568M.5. Ordering Information5.1 It is the purchasers responsibility to specify in the purchase order all ordering information necessary to describe the requiredmaterial. Examples of such information include, but are not limited to

36、, the following:5.1.1 ASTM specification number and year of issue;5.1.2 Name of material and designation (cold-rolled steel sheet) (include grade, type, and class, as appropriate, for CS, DS,DDS, EDDS, SS, HSLAS, HSLAS-F, SHS, or BHS) (see 4.1);5.1.2.1 When a Chemistry grade is specified per Specifi

37、cation A568/A568MTable X2.3, the grade shall be furnished as CSTypeB 1008, DS Type A 1005, etc., and so forth,5.1.2.2 When a Chemistry grade is specified per Specification A568/A568M Table X2.1, with no reference to CS Type A, CSType B, DS Type A, or DS Type B, the grade shall be furnished as CS 100

38、5, CS 1008, CS 1020, etc., and and so forth, andmeet chemistry specified per Specification A568/A568M Table X2.1,5.1.2.3 When a type is not specified for CS or DS and there is no reference to a chemistry grade such as 1005, 1006, etc., andso forth, Type B will be furnished (see 4.1);5.1.2.4 When a c

39、lass is not specified for HSLAS, Class 1 will be furnished (see 4.1);5.1.2.5 When a type is not specified for SS 33 230 and SS 40 275, Type 1 will be furnished (see 4.1);5.1.3 Classification (either exposed, unexposed, temper rolled, or annealed last) (see 4.3);5.1.4 Finish (see 9.1);5.1.5 Oiled or

40、not oiled, as required (see 9.2);5.1.6 Dimensions (thickness, width, and whether cut lengths 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 limitat

41、ions prior to placing an order.5.1.7 Coil size (must include inside diameter, outside 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

42、, DS, DDS, and EDDS. For materials with requiredmechanical properties, SS, HSLAS, HSLAS-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

43、 for 38 in. 10 mm minimum edge distance (see SupplementaryRequirement in Specification 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 descriptio

44、n is as follows: ASTM A 1008-XX, A1008-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:ASTMA1008M-XX, cold-rolled steel sheet, SS grade 275, unexposed, matte finish

45、, oiled, 0.88 mm by 760 mm by 2440 mm, 10 000 kg, for shelf bracket.A1008/A1008M 1536. General Requirements for Delivery6.1 Material furnished under this specification shall conform to the applicable requirements of the current edition ofSpecification A568/A568M unless otherwise provided herein.7. C

46、hemical Composition7.1 The heat analysis of the steel shall conform to the chemical composition requirements of the appropriate designation shownin Table 1 for CS, DS, DDS, and EDDS and in Table 2 for SS, HSLAS, HSLAS-F, SHS, and BHS.7.2 Each of the elements listed in Table 1Tables 1 and 2, Table 2,

47、 and Specification A568/A568M Table X2.3 shall be includedin the report 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 the amount of vanadium, columbium, or titanium is less than

48、0.008 %,report the analysis as 0.008 % or the actual determined value.When the amount of boron is less than 0.0005 %, report the analysisas 0.0005 % or the actual determined value.7.3 Sheet steel grades defined by this specification are suitable for welding if appropriate welding conditions are sele

49、cted. Forcertain welding processes, if more restrictive composition limits are desirable, they shall be specified at the time of inquiry andconfirmed at the time of ordering.8. Mechanical Properties8.1 CS, DS, DDS, and EDDS:TABLE 2 Chemical CompositionAForfor 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 CuB Ni Cr Mo V Cb Ti NSS:CGrade 25 170 0.20 0.60 0.035 0.035 . . . . . . 0.20 0.20 0.15