ASTM A1008 A1008M-2013 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 12aA1008/A1008M 13Standard 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
2、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. Sc
3、ope*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 lengths.1.2 Cold rolled steel sheet is available in the designations as listed in 4.1.1.3
4、 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 eachsystem may not be exact equivalents; therefore, each system shall be used indepe
5、ndently 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 Percent), Cold-RolledA370 Test Methods and Definitions for Mechanical Testing of Steel
6、 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 Alloys, and FerroalloysE18 Test Methods for Rockwell Hardness of Metallic MaterialsE51
7、7 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 of other terms used in this specification, refer to Terminolog
8、y A941.3.1.2 agingloss 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 stored for some time.3.1.2.1 DiscussionAging increases the tendency of a steel to exhibit stretcher strains a
9、nd fluting.3.1.3 bake hardenable steelsteel in which significant aging is realized when 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 inclusio
10、ns toimprove formability, weldability, and machinability.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 and Strip.Current edition approved Nov. 1, 2012Oct. 1, 2013.
11、Published November 2012October 2013. Originally approved in 2000. Last previous edition approved in 2012 asA1008/A1008M 12.A1008/A1008M 12a. DOI: 10.1520/A1008_A1008M-12a.10.1520/A1008_A1008M-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at s
12、erviceastm.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 standard an indication of what changes have been made to the previous versio
13、n. 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 is to be considered the official document.*A Summary of Changes sectio
14、n appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.4.1 DiscussionInclusions, especially those elongated during the rolling process, create the conditions for initiating and/or propagating crackswh
15、en 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 and/or by altering the shape of inclusions through the use of additions during the steelmakingprocess that change the elongated shap
16、e of the inclusions to less harmful small, well dispersed globular inclusions.3.1.5 solid-solution hardened steel or solution hardened steelsteel strengthened through additions of elements, such as Mn,P, or Si, that can be dissolved within the crystalline structure of steels.3.1.5.1 DiscussionAlloyi
17、ng 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 between the atomic sizes of such elements and that of iron.3.1.6 stabilizationaddition of one or more nitride- or carbide-forming ele
18、ments, or both, such as titanium and columbium, tocontrol the level of the interstitial elements of carbon and nitrogen in the steel.3.1.6.1 DiscussionStabilizing improves formability and increases resistance to aging.3.1.7 vacuum degassingprocess of refining liquid steel in which the liquid is expo
19、sed to a vacuum as part of a specialtechnique for removing impurities or for decarburizing the steel.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
20、grade per Specification A568/A568M Table X2.3,4.1.3 Drawing Steel (DS Types A and B),B, as specified in Table 1),NOTE 1CS Type B and DS Type B describe the most common product previously included, respectively, in Specifications A366/A366M andA620/A620M.4.1.4 Drawing Steel (DS Type A and B combined
21、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 1020, etc.),4.1.6 Deep Drawing Steel (DDS),4.1.7 Extra Deep Drawing Steel (EDDS),4.1.8 Structural Steel (SS grades
22、 25170, 30205, 33230 Types 1 and 2, 40275 Types 1 and 2, 45310, 50340, 60410,70480, and 80550).TABLE 1 Chemical CompositionAFor 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
23、 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 . . . . . .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 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 Ty
24、pe 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 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 . . . . . .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 . . . . . .EDDSJ 0.02
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