1、Designation: A 1008/A 1008M 07aStandard 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 A 1008/A 1008M; the number imme
2、diately 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 (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 Th
3、is 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 rolled steel sheet is available in the designations aslisted in 4.1.1.3 This speci
4、fication does not apply to steel strip asdescribed in Specification A 109/A 109M.1.4 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within the text, theSI units are shown in brackets. The values stated in eachsystem are not exact equivalents; there
5、fore, each system mustbe used independently of the other.2. Referenced Documents2.1 ASTM Standards:2A 109/A 109M Specification for Steel, Strip, Carbon (0.25Maximum Percent), Cold-RolledA 366/A 366M Specification for Commercial Steel (CS)Sheet, Carbon (0.15 Maximum Percent) Cold-Rolled3A 370 Test Me
6、thods and Definitions for Mechanical Testingof Steel ProductsA 568/A 568M Specification for Steel, Sheet, Carbon,Structural, and High-Strength, Low-Alloy, Hot-Rolled andCold-Rolled, General Requirements forA 620/A 620M Specification for Drawing Steel (DS),Sheet, Carbon, Cold-Rolled3A 941 Terminology
7、 Relating to Steel, Stainless Steel, Re-lated Alloys, and FerroalloysE18 Test Methods for Rockwell Hardness of MetallicMaterialsE 517 Test Method for Plastic Strain Ratio r for Sheet MetalE 646 Test Method for Tensile Strain-Hardening Exponents(n -Values) of Metallic Sheet Materials3. Terminology3.1
8、 Definitions of Terms Specific to This Standard:3.1.1 For definitions of other terms used in this specifica-tion, refer to Terminology A 941.3.1.2 agingloss of ductility with an increase in hardness,yield strength, and tensile strength that occurs when steel thathas been slightly cold worked (such a
9、s by temper rolling) isstored for some time.3.1.2.1 DiscussionAging increases the tendency of a steelto exhibit stretcher strains and fluting.3.1.3 bake hardenable steelsteel in which significantaging is realized when moderate heat treatment, such as thatused for paint baking, follows straining or c
10、old working.3.1.4 solid-solution hardened steel or solution hardenedsteelsteel strengthened through additions of elements, suchas Mn, P, or Si, that can be dissolved within the crystallinestructure of steels.3.1.4.1 DiscussionAlloying elements that form a solid-solution with iron provide strengtheni
11、ng 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.3.1.5 stabilizationaddition of one or more nitride- orcarbide-forming elements, or both, such as titanium andcolumbium, to control the level of
12、the interstitial elements ofcarbon and nitrogen in the steel.3.1.5.1 DiscussionStabilizing improves formability andincreases resistance to aging.3.1.6 vacuum degassingprocess of refining liquid steel inwhich the liquid is exposed to a vacuum as part of a specialtechnique for removing impurities or f
13、or decarburizing thesteel.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 Drawing Steel (DS Types A and B),1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Relat
14、ed Alloys and is the direct responsibility of SubcommitteeA01.19 on Steel Sheet and Strip.Current edition approved Sept. 1, 2007. Published September 2007. Originallyapproved in 2000. Last previous edition approved in 2007 asA 1008/A 1008M 07.2For referenced ASTM standards, visit the ASTM website, w
15、ww.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.3Withdrawn.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr H
16、arbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.NOTE 1CS Type B and DS Type B describe the most commonproduct previously included, respectively, in Specifications A 366/A 366M and A 620/A 620M.4.1.3 Deep Drawing Steel (DDS),4.1.4 Extra Deep Drawing Steel (EDDS),4.1.5 Struct
17、ural Steel (SS grades 25170, 30205, 33230Types 1 and 2, 40275 Types 1 and 2, 50340, 60410,70480, and 80550).4.1.6 High-Strength Low-Alloy Steel (HSLAS, in classes 1and 2, in grades 45310, 50340. 55380, 60410, 65450,and 70480 in Classes 1 and 2), and4.1.7 High-Strength Low-Alloy Steel with Improved F
18、orm-ability (HSLAS-F grades 50340, 60410, 70480, and80550).4.1.7.1 HSLAS-F steel has improved formability whencompared to HSLAS. The steel is fully deoxidized, made tofine grain practice and includes microalloying elements such ascolumbium, vanadium, zirconium, etc. The steel shall betreated to achi
19、eve inclusion control.4.1.8 Solution hardened steel (SHS), and4.1.9 Bake hardenable steel (BHS).4.2 When required for HSLAS and HSLAS-F steels, limi-tations on the use of one or more of the microalloy elementsshall be specified on the order.4.3 Cold-rolled steel sheet is supplied for either exposed
20、orunexposed applications. Within the latter category, cold-rolledsheet is specified either “temper rolled” or “annealed last.” Fordetails on processing, attributes and limitations, and inspectionstandards, refer to Specification A 568/A 568M.5. Ordering Information5.1 It is the purchasers responsibi
21、lity to specify in thepurchase order all ordering information necessary to describethe required material. Examples of such information include,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 steelsheet) (incl
22、ude grade, type, and class, as appropriate, for CS,DS, DDS, EDDS, SS, HSLAS, HSLAS-F, SHS, or BHS) (see4.1);5.1.2.1 When a type is not specified for CS or DS, Type Bwill be furnished (see 4.1);5.1.2.2 When a class is not specified for HSLAS, Class 1will be furnished (see 4.1);5.1.2.3 When a type is
23、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, thickness tolerance table (see5.
24、1.6.1), width, and whether cut lengths or coils);5.1.6.1 As agreed upon between the purchaser and theproducer, material ordered to this specification will be suppliedto meet the applicable thickness tolerance table shown inSpecification A 568/A 568M;NOTE 2Not all producers are capable of meeting all
25、 the limitations ofthe thickness tolerance tables in Specification A 568/A 568M. The pur-chaser should contact the producer regarding possible limitations prior toplacing an order.5.1.7 Coil size (must include inside diameter, outside diam-eter, and maximum weight);5.1.8 Copper bearing steel (if req
26、uired);5.1.9 Quantity;5.1.10 Application (part identification and description);5.1.11 Special requirements (if required), and5.1.12 A report of heat analysis will be supplied, if re-quested, for CS, DS, DDS, and EDDS. For materials withrequired mechanical properties, SS, HSLAS, HSLAS-F, SHS,and BHS,
27、 a report is required of heat analysis and mechanicalproperties as determined by the tension test.NOTE 3A typical ordering description is as follows: ASTM 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,t
28、hickness tolerance Table 18 of Specification A 568/A 568M, 100 000 lb,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, thickness toleranceTable A1.15 of Specification A 568/A 568M, 10 000 kg, for she
29、lf bracket.6. General Requirements for Delivery6.1 Material furnished under this specification shall con-form to the applicable requirements of the current edition ofSpecificationA 568/A 568M unless otherwise provided herein.7. Chemical Composition7.1 The heat analysis of the steel shall conform to
30、thechemical composition requirements of the appropriate desig-nation shown in Table 1 for CS, DS, DDS, and EDDS and inTable 2 for SS, HSLAS, HSLAS-F, SHS, and BHS.7.2 Each of the elements listed in Table 1 and Table 2 shallbe included in the report of the heat analysis. When the amountof copper, nic
31、kel, chromium, or molybdenum is less than0.02 %, report the analysis as 0.02 % or the actual determinedvalue. When the amount of vanadium, columbium, or titaniumis less than 0.008 %, report the analysis as 0.008 % or theactual determined value. When the amount of boron is less than0.0005 %, report t
32、he analysis as 0.0005 % or the actualdetermined value.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 thetime of
33、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 and EDDS are shown in Table 3.8.1.2 The material shall be capable of being bent, at roomtemperature, in any direction through 180 flat on it
34、self withoutcracking on the outside of the bent portion (see Section 14 ofTest Methods and Definitions A 370). The bend test is not arequirement of delivery. However, if testing is performed byA 1008/A 1008M 07a2the purchaser, material not conforming to the requirement shallbe subject to rejection.8
35、.1.3 Sheet of these designations except for EDDS aresubject to aging dependent upon processing factors such as theTABLE 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 CrBMo V
36、 Cb TiCNBCS Type AD,E,F,G0.10 0.60 0.030 0.035 . . . . . . 0.20H0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .CS Type BD0.02 to0.150.60 0.030 0.035 . . . . . . 0.20H0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .CS Type CD,E,F,G0.08 0.60 0.10 0.035 . . . . . . 0.20H0.20 0.15 0.06 0.008 0.008 0.025 . . .
37、. . .DS Type AE,I0.08 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,G0.06 0.50 0.020 0.025 0.01 min . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .EDD
38、SJ0.02 0.40 0.020 0.020 0.01 min . . . 0.10 0.10 0.15 0.03 0.10 0.10 0.15 . . . . . .AWhere an ellipsis (. . .) appears in the table, there is no requirement, but the analysis result shall be reported.BChromium is permitted, at the producers option, to 0.25 % maximum when the carbon content is less
39、than or equal to 0.05 %.CFor 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 %.DWhen an aluminum deoxidized steel is required for the application, it is permissible to order Commercial Steel (CS) to a minimum of 0.01 % tot
40、al aluminum.ESpecify Type B to avoid carbon levels below 0.02 %.FIt is permissible to furnish as a vacuum degassed or chemically stabilized steel, or both, at the producers option.GFor carbon levels less than or equal to 0.02 %, it is permissible to use vanadium, columbium or titanium, or a combinat
41、ion thereof, as stabilizing elementsattheproducers 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.HWhen copper steel is specified, the copper limit is a minimum requirement. When copper steel is not specified,
42、the copper limit is a maximum requirement.IIf produced utilizing a continuous anneal process, stabilized steel is permissible at the producers option, and Footnotes F and G apply.JShall be furnished as a vacuum degassed and stabilized steel.TABLE 2 Chemical CompositionAFor Cold Rolled Steel Sheet De
43、signations 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 Ti NSS:CGrade 25 170 0.20 0.60 0.035 0.035 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .Grade 30 205 0.20 0.60 0.035 0.035 . . . . . . 0.20 0.20 0.1
44、5 0.06 0.008 0.008 0.025 . . .Grade 33 230 Type 1 0.20 0.60 0.035 0.035 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .Grade 33 230 Type 2 0.15 0.60 0.20 0.035 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .Grade 40 275 Type 1 0.20 0.90 0.035 0.035 . . . . . . 0.20 0.20 0.15 0.06 0.0
45、08 0.008 0.025 . . .Grade 40 275 Type 2 0.15 0.60 0.20 0.035 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .Grade 50 340 0.20 0.70 0.035 0.035 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .Grade 60 410 0.20 0.70 0.035 0.035 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .Grad
46、e 70 480 0.20 0.70 0.035 0.035 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .Grade 80 550 0.20 0.60 0.035 0.035 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .HSLAS:DGrade 45 310 Class 1 0.22 1.65 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min . . .Grade 45
47、310 Class 2 0.15 1.65 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min . . .Grade 50 340 Class 1 0.23 1.65 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min . . .Grade 50 340 Class 2 0.15 1.65 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min
48、0.005 min . . .Grade 55 380 Class 1 0.25 1.65 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min . . .Grade 55 380 Class 2 0.15 1.65 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min . . .Grade 60 410 Class 1 0.26 1.65 0.04 0.04 . . . . . . 0.20 0.20 0.15 0
49、.06 0.005 min 0.005 min 0.005 min . . .Grade 60 410 Class 2 0.15 1.65 0.04 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.005 min 0.005 min 0.005 min . . .Grade 65 450 Class 1 0.26 1.65 0.04 0.04 . . . . . . 0.20 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 0.04 . . . . . . 0.20 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 0.04 . . . . . . 0.20 0.20 0.15 0.16 0.005 min 0.005 min 0.005 minEGrade 70 480 Class 2 0.15 1.65 0
