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
25、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 Chromium is permitted, at the producers option, to 0.25 % maximum when the carbon content is less than
26、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 required for the application, it is permissible to order Commercial Steel (CS) to a minimum of 0.01 % total
27、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 levels less than or equal to 0.02 %, it is permissible to use vanadium, columbium or titanium, or a combinat
28、ion 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 copper steel is specified, the copper limit is a minimum requirement. When copper steel is not specifie
29、d, 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 furnished as a vacuum degassed and stabilized steel.A1008/A1008M 1324.1.9 High-Strength Low-Alloy Steel (H
30、SLAS, in classes 1 and 2, in grades 45310, 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
31、fully deoxidized, made to fine grainpractice and includes microalloying elements such as columbium, vanadium, zirconium, etc. The steel shall be treated to achieveinclusion control.4.1.11 Solution hardened steel (SHS), and4.1.12 Bake hardenable steel (BHS).4.2 When required for HSLAS and HSLAS-F ste
32、els, limitations on the use 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
33、on processing, attributes and 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 incl
34、ude, but are not limited to, 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 gra
35、de is specified per Specification A568/A568MTable X2.3, the grade shall be furnished as CSTypeB 1008, DS Type A 1005, etc.,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 furnis
36、hed as CS 1005, CS 1008, CS 1020, etc., and meet chemistryspecified per Specification A568/A568M Table X2.1,5.1.2.3 When a type is not specified for CS or DS, DS and there is no reference to a chemistry grade such as 1005, 1006, etc.,Type B will be furnished (see 4.1);5.1.2.4 When a class is not spe
37、cified 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 not oiled, as r
38、equired (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 limitations prior to p
39、lacing 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, DS, DDS, and
40、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 for 38 in. 10
41、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 description is as follows
42、: ASTM A 1008-XX, cold rolled steel sheet, CS Type A, exposed, matte finish, oiled, 0.035 by30 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, oiled, 0.88 mm by 760 m
43、m by 2440 mm, 10 000 kg, for shelf bracket.6. 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. Chemical Composition7.1 The heat analysis
44、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.A1008/A1008M 1337.2 Each of the elements listed in Table 1, Table 2and, Table 2and Specification A568/A568M
45、 Table X2.3 shall be included inthe 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 0.008 %,report the analysis a
46、s 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 selected. Forcertain welding proc
47、esses, 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:8.1.1 Typical nonmandatory mechanical properties for CS, DS, DDS DDS, EDDS, and EDDSSpecification A568/A5
48、68M TableX2.3 are shown in Table 3.8.1.2 The material represented by all grades specified in Table 1 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
49、 14 of Test Methods and Definitions A370). The bend test is not a requirement of delivery. However, if 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 chemical composition. For additional information on aging, seeAppendix X1 of Specification A568/A568M.TABLE
