1、Designation: A1011/A1011M 12a A1011/A1011M 12bStandard Specification forSteel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with ImprovedFormability, and Ultra-High Strength1This standard is issued under the fixed designation A1011/A1011M; the num
2、ber 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. Scope
3、*1.1 This specification covers hot-rolled, carbon, structural, high-strength low-alloy, high-strength low-alloy with improvedformability, and ultra-high strength steel sheet and strip, in coils and cut lengths.1.2 Hot rolled steel sheet and strip is available in the designations as listed in 4.1.1.3
4、 This specification is not applicable to the steel covered by Specification A635/A635M.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 independen
5、tly of the other. Combining values from thetwo systems may result in non-conformance with the standard.2. Referenced Documents2.1 ASTM Standards:2A370 Test Methods and Definitions for Mechanical Testing of Steel ProductsA568/A568M Specification for Steel, Sheet, Carbon, Structural, and High-Strength
6、, Low-Alloy, Hot-Rolled and Cold-Rolled,General Requirements forA635/A635M Specification for Steel, Sheet and Strip, Heavy-Thickness Coils, Hot-Rolled, Alloy, Carbon, Structural,High-Strength Low-Alloy, and High-Strength Low-Alloy with Improved Formability, General Requirements forA749/A749M Specifi
7、cation for Steel, Strip, Carbon and High-Strength, Low-Alloy, Hot-Rolled, General Requirements forA941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and FerroalloysE18 Test Methods for Rockwell Hardness of Metallic Materials3. Terminology3.1 DefinitionsFor definitions of other term
8、s used in this specification refer to Terminology A941.3.2 Definitions of Terms Specific to This Standard:3.2.1 agingloss of ductility with an increase in hardness, yield strength, and tensile strength that occurs when steel, which hasbeen slightly cold worked (such as by temper rolling) is stored f
9、or some time.3.2.1.1 DiscussionAging also increases the tendency toward stretcher strains and fluting.3.2.2 inclusion control, nthe process of reducing the volume fraction of inclusions or modifying the shape of inclusions toimprove formability, weldability, and machinability.3.2.2.1 Discussion1 Thi
10、s specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.19 on Steel Sheet and Strip.Current edition approved Aug. 15, 2012Nov. 1, 2012. Published October2012November 2012. Originally approved in 2
11、000. Last previous edition approvedin 2012 as A1011/A1011M 12.A1011/A1011M 12a. DOI: 10.1520/A1011_A1011M-12a.10.1520/A1011_A1011M-12b.2 For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume in
12、formation, refer to the standards Document Summary page onthe ASTM website.*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 States1Inclusions, especially those elongated during
13、the rolling process, create the conditions for initiating or propagating cracks whenthe material is stretched or bent during the manufacture of a part (or both). The adverse effects of inclusions are minimized byreducing the content of inclusions in the steel or by altering the shape of inclusions t
14、hrough the use of additions during thesteelmaking process that change the elongated shape of the inclusions to less harmful small, well dispersed globular inclusions (orboth).3.2.3 stabilizationaddition of one or more nitride or carbide forming elements, or both, such as titanium and columbium, toco
15、ntrol the level of the interstitial elements carbon and nitrogen in the steel.3.2.3.1 DiscussionStabilization improves formability and increases resistance to aging.3.2.4 vacuum degassingprocess of refining liquid steel in which the liquid is exposed to a vacuum as part of a specialtechnique for rem
16、oving impurities or for decarburizing the steel.4. Classification4.1 Hot-rolled steel sheet and steel strip is available in the following designations:4.1.1 Commercial Steel (CS Types A, B, C, and D),4.1.2 Drawing Steel (DS Types A and B),NOTE 1CS Type B and DS Type B describe the most common produc
17、t previously included, respectively, in Specifications and .4.1.3 Structural Steel (SS grades 30205, 33230, 36250 Types 1 and 2, 40275, 45310, 45310 Types 1 and 2, 50340,55380, 60410, 70480, and 80550),4.1.4 High-Strength Low-Alloy Steel (HSLAS, classes 1 and 2, in grades 45310, 50340, 55380, 60410,
18、 65450, and70480.4.1.5 High-Strength Low-Alloy Steel with Improved Formability (HSLAS-F grades 50340, 60410, 70480, and 80550).4.1.5.1 HSLAS-F steel has improved formability when compared to HSLAS. The steel is fully deoxidized, made to a fine grainpractice, and includes microalloying elements such
19、as columbium, vanadium, and zirconium. The steel shall be treated to achieveinclusion control.4.1.6 Ultra-High Strength (UHSS Types 1 and 2, in Grades 90 620 and 100 690).4.1.6.1 UHSS steel has increased strength compared with HSLAS-F. The steel is killed and made to a fine ferritic grain practice,a
20、nd includes microalloying elements such as columbium (niobium), titanium, vanadium, molybdenum, and so forth. The steel shallbe treated to achieve inclusion control. The material is intended for miscellaneous applications where higher strength, savings inweight, and weldability are important. Atmosp
21、heric corrosion resistance of these steels is equivalent to plain carbon steels. Withcopper specified, the atmospheric corrosion resistance is somewhat enhanced.4.1.7 When required for HSLAS, HSLAS-F, and UHSS steels, limitations on the use of one or more of the microalloy elementsshall be specified
22、 on the order.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, the following:5.1.1 ASTM specification number and year of i
23、ssue,5.1.2 Name of material and designation (hot-rolled steel sheet) (include grade, type and class, as appropriate, for CS, DS, SS,HSLAS, HSLAS-F, and UHSS) (see 4.1),5.1.2.1 When a type is not specified for CS or DS, Type B will be furnished (see 4.1),5.1.2.2 When a class is not specified for HSLA
24、S, Class 1 will be furnished (see 4.1),5.1.2.3 When a type is not specified for SS Grade 36, Grades, Type 1 will be furnished (see 4.1),5.1.2.4 When a type is not specified for UHSS, Type 1 shall be furnished (see 4.1).5.1.3 Finish (see 9.1)5.1.4 Type of edge (see 9.3),5.1.5 Oiled or not oiled, as r
25、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 Specifications A568/A568M and A749/A749M.The purchaser should contact the producer prior to placing an order
26、.5.1.7 Coil size (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),A1011/A1011M 12b25.1.11 A report of heat analysis will be supplied, if requested, for CS and DS. For materials wit
27、h required mechanical properties,SS, HSLAS, HSLAS-F, and UHSS, a report is required of heat analysis and mechanical properties as determined by the tensiontest, 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 (s
28、ee SupplementaryRequirement in Specification A568/A568M), this requirement shall be specified in the purchase order or contract.NOTE 2A typical ordering description is as follows: ASTM A1011-XX, hot rolled steel sheet, CS Type A, pickled and oiled, cut edge, 0.075 by 36by 96 in., 100 000 lb, for par
29、t no. 6310, for shelf bracket.or:ASTM A1011M-XX, hot rolled steel sheet, CS Type B, pickled and oiled, cut edge, 3.7 by 117 mm by coil, ID 600 mm, OD 1500 mm, max weight 10 000kg, 50 000 kg, for upper control arm.6. General Requirements for Delivery6.1 Material furnished under this specification sha
30、ll conform to the applicable requirements of the current edition ofSpecification A568/A568M for sheets and Specification A749/A749M for strip, unless otherwise provided for herein.7. Chemical Composition7.1 The heat analysis of the steel shall conform to the chemical composition requirements of the
31、appropriate designation shownin Table 1 for CS and DS and Table 2 for SS, HSLAS, HSLAS-F, and UHSS.7.1.1 A report of heat analysis will be supplied, if requested, for CS and DS. For materials with required mechanical properties,SS, HSLAS, HSLAS-F, and UHSS, a report of heat analysis is required.7.2
32、Each of the elements listed in Tables 1 and 2 shall be included in the report of the heat analysis. When the amount of copper,nickel, chromium, or molybdenum is less than 0.02 %, report the analysis as 0.02 % or the actual determined value. When theamount of vanadium, columbium, or titanium is less
33、than 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 analysis as 0.0005 % or the actual determined value.7.3 Sheet steel grades defined by this specification are suitable for welding if appropriate welding conditions a
34、re selected. 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 and DS:8.1.1 Typical, nonmandatory mechanical properties for CS and DS are found in Tabl
35、e 3.8.1.2 The material shall be capable of being bent at room temperature in any direction through 180 flat on itself withoutcracking on the outside of the bent portion (see the section on bend test in Test Methods and Definitions A370). The bend test isnot a requirement of delivery. However, if tes
36、ting is performed by the purchaser, material not conforming to the requirement shallbe subject to rejection.8.2 SS, HSLAS, HSLAS-F, and UHSS:8.2.1 The available grades and corresponding mechanical properties for SS, HSLAS, HSLAS-F, and UHSS are shown in Table4.8.2.1.1 For SS, HSLAS, HSLAS-F, and UHS
37、S, a report is required of mechanical properties as determined by the tension test.TABLE 1 Chemical CompositionAFor Hot Rolled Steel Sheet and Strip Designations CS and DSComposition, % Heat AnalysisElement maximum unless otherwise shownC Mn P S Al Si Cu Ni CrB Mo V Cb TiC N BCS Type AD,E,F,G 0.10 0
38、.60 0.030 0.035 . . . . . . 0.20H 0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .CS Type BF 0.02 to 0.15 0.60 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 . . . . . .CS Type DF 0.10 0.7
39、0 0.030 0.035 . . . . . . 0.20H 0.20 0.15 0.06 0.008 0.008 0.008 . . . . . .DS Type AD,E,G 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 to 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 . . . . . .A Where an ellipsis
40、 (. . .) appears in the table, 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 % carbon or more, titanium is permitted at the produ
41、cers option, to the lesser of 3.4N + 1.5S or 0.025 %.D Specify Type B to avoid carbon levels below 0.02 %.E For carbon levels less than or equal to 0.02 %, it is permissible to use vanadium, columbium, or titanium, or combinations thereof, as stabilizing elements at the producersoption. In such case
42、, the limits for these elements are 0.10 % for vanadium or columbium and 0.15 % for titanium.F When an aluminum deoxidized steel is required, it is permissible to order a minimum of 0.01 % total aluminum.G It is permissible to furnish as a vacuum degassed or chemically stabilized steel, or both, at
43、producers option.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.A1011/A1011M 12b38.2.2 Tension Tests:8.2.2.1 RequirementsMaterial as represented by the test specimen shall conform to the mecha
44、nical property requirementsspecified in Table 4. These requirements do not apply to the uncropped ends of unprocessed coils.8.2.2.2 Number of TestsTwo tension tests shall be made from each heat or from each 50 tons 45 000 kg. When the amountof finished material from a heat is less than 50 tons 45 00
45、0 kg, one tension test shall be made. When material rolled from oneheat differs 0.050 in. 1.27 mm or more in thickness, one tension test shall be made from the thickest and thinnest materialregardless of the weight represented.8.2.2.3 Tension test specimens shall be taken at a point immediately adja
46、cent to the material to be qualified.8.2.2.4 Tension test specimens shall be taken from the full thickness of the sheet as-rolled.TABLE 2 Chemical CompositionAFor Hot Rolled Steel Sheet and Strip Designations SS, HSLAS, HSLAS-F, and UHSS% Heat Analysis, Element Maximum unless otherwise shownDesignat
47、ion C Mn P S Al Si CuB Ni Cr Mo V Cb Ti NSS:CGrade 30 205 0.25 0.90 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .Grade 33 230 0.25 0.90 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .Grade 36 250 Type 1 0.25 0.90 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.00
48、8 0.008 0.025 . . .Grade 36 250 Type 2D 0.25 1.35 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .Grade 40 275 0.25 0.90 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .Grade 45 310 Type 1D 0.25 1.35 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . .
49、 .Grade 45 310 Type 2 0.020.080.301.000.0300.0700.025 0.020.080.60 0.20 0.20 0.15 0.06 0.008 0.008 0.008 0.0100.030Grade 50 340D 0.25 1.35 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .Grade 55 380D 0.25 1.35 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .Grade 60 410 0.25 1.35 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .Grade 70 480 0.25 1.35 0.035 0.04 . . . . . . 0.20 0.20 0.15 0.06 0.008 0.008 0.025 . . .Grade 80
