1、Designation:A1011/A1011M10 Designation: A1011/A1011M 12Standard 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
2、; the 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
3、.1. Scope*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 i
4、n 4.1.1.3 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 i
5、ndependently 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
6、-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,General Requirements for A569/A569MSpecification for Steel, Carbon (0.15 Maximum, Percent), Hot-Rolled Sheet and StripCommercialA622/A622MSpecification for Drawing Steel (DS), Sheet and Strip, Carbon, Hot-Rolled3A635/A635M Specification for Steel, She
7、et 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 Specification for Steel, Strip, Carbon and High-Strength, Low-Alloy, Hot-Rolled, General Requirements forA941
8、Terminology Relating to Steel, Stainless Steel, Related Alloys, and FerroalloysE18 Test Methods for Rockwell Hardness of Metallic Materials3. Terminology3.1 DefinitionsFor definitions of other terms used in this specification refer to Terminology A941.3.2 Definitions of Terms Specific to This Standa
9、rd: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 for some time.3.2.1.1 DiscussionAging also increases the tendency toward stretcher strains and fluting.3
10、.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 DiscussionInclusions, especially those elongated during the rolling process, create the conditions for initiating orpr
11、opagating cracks when the material is stretched or bent during the manufacture of a part (or both). The adverse effects ofinclusions are minimized by reducing the content of inclusions in the steel or by altering the shape of inclusions through the useof additions during the steelmaking process that
12、 change the elongated shape of the inclusions to less harmful small, well dispersedglobular inclusions (or both).3.2.3 stabilizationaddition of one or more nitride or carbide forming elements, or both, such as titanium and columbium, tocontrol the level of the interstitial elements carbon and nitrog
13、en in the steel.1This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.19on Steel Sheet and Strip.Current edition approved AprilMarch 1, 2010.2012. Published April 2010.March 2012. Original
14、ly approved in 2000. Last previous edition approved in 20092010 asA1011/A1011M 109b. DOI: 10.1520/A1011_A1011M-102.2For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to
15、the standards Document Summary page on the ASTM website.1This 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
16、 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 standard.Copyright ASTM International, 100 Barr
17、Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.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 removi
18、ng 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 product p
19、reviously included, respectively, in Specifications A569/A569M andA622/A622M.4.1.3 Structural Steel (SS grades 30205, 33230, 36250 Types 1 and 2, 40275, 45310, 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, 654
20、50, 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 as c
21、olumbium, 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,and i
22、ncludes 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. Atmospheri
23、c 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 on
24、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 issue
25、,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 HSLAS, C
26、lass 1 will be furnished (see 4.1),5.1.2.3 When a type is not specified for SS Grade 36, 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 required (see
27、 9.2),5.1.6 Dimensions (thickness, width, and whether cut lengths or coils),NOTE 2Not all producers are capable of meeting all the limitations of the thickness tolerance tables in SpecificationsA568/A568M andA749/A749M.The purchaser should contact the producer prior to placing an order.5.1.7 Coil si
28、ze (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 Areport of heat analysis will be supplied, if requested, for CS and DS. For materials with required mechanical properties
29、,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 for38 in. 10 mm minimum edge distance (see SupplementaryRequirement in Sp
30、ecification A568/A568M), this requirement shall be specified in the purchase order or contract.NOTE 3A 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 part no. 6310, for shelf bracket.or:
31、ASTMA1011M-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.A1011/A1011M 1226. General Requirements for Delivery6.1 Material furnished under this specification shall conform to the
32、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 appropriate design
33、ation shownin Table 1 for CS and DS and Table 2 for SS, HSLAS, HSLAS-F, and UHSS.7.2 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
34、 actual determined value. When theamount of vanadium, columbium, or titanium is less 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 defin
35、ed by this specification are suitable for welding if appropriate welding conditions are 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
36、 DS:8.1.1 Typical, nonmandatory mechanical properties for CS and DS are found in Table 3.8.1.2The8.1.2 The material shall be capable of being bent at room temperature in any direction through 180 flat on itselfwithout cracking on the outside of the bent portion (see the section on bend test in Test
37、Methods and Definitions A370). The bendtest is not a requirement of delivery. However, if testing is performed by the purchaser, material not conforming to the requirementshall be subject to rejection.8.2 SS, HSLAS, HSLAS-F, and UHSS:8.2.1 The available grades and corresponding mechanical properties
38、 for SS, HSLAS, HSLAS-F, and UHSS are shown in Table4.8.2.2 Tension Tests:8.2.2.1 RequirementsMaterial as represented by the test specimen shall conform to the mechanical property requirementsspecified in Table 4. These requirements do not apply to the uncropped ends of unprocessed coils.8.2.2.2 Num
39、ber 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 45 000 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 tes
40、t 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 adjacent 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.8.2.2
41、.5 Tension test specimens shall be taken from a location approximately halfway between the center of sheet and the edgeof the material as-rolled.8.2.2.6 Tension test specimens shall be taken with the lengthwise axis of the test specimen parallel to the rolling direction(longitudinal test).8.2.2.7 Te
42、st MethodYield strength shall be determined by either the 0.2 % offset method or the 0.5 % extension under loadmethod unless otherwise specified.8.2.3 Bending Properties:TABLE 1 Chemical CompositionAFor Hot Rolled Steel Sheet and Strip Designations CS and DSComposition, % Heat AnalysisElement maximu
43、m unless otherwise shownCMnPSAlSiCuNiCrBMo V 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 BF0.02 to 0.15 0.60 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 . . . . .
44、. 0.20H0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .CS Type DF0.10 0.70 0.030 0.035 . . . . . . 0.20H0.20 0.15 0.06 0.008 0.008 0.008 . . . . . .DS Type AD,E,G0.08 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
45、.20 0.20 0.15 0.06 0.008 0.008 0.025 . . . . . .AWhere an ellipsis (. . .) appears in the table, there is no specified limit, but the analysis shall be reported.BChromium is permitted, at the producers option, to 0.25 % maximum when the carbon content is less than or equal to 0.05 %.CFor steels cont
46、aining 0.02 % carbon or more, titanium is permitted at the producers option, to the lesser of 3.4N + 1.5S or 0.025 %.DSpecify Type B to avoid carbon levels below 0.02 %.EFor carbon levels less than or equal to 0.02 %, it is permissible to use vanadium, columbium, or titanium, or combinations thereof
47、, as stabilizing elements at theproducers option. In such case, the limits for these elements are 0.10 % for vanadium or columbium and 0.15 % for titanium.FWhen an aluminum deoxidized steel is required, it is permissible to order a minimum of 0.01 % total aluminum.GIt is permissible to furnish as a
48、vacuum degassed or chemically stabilized steel, or both, at producers option.HWhen 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 1238.2.3.1 The suggested minimum inside radii for cold b
49、ending are listed in Appendix X1 and is discussed in more detail inSpecifications A568/A568M (6.6) and A749/A749M (7.6). Where a tighter bend radius is required, where curved or offset bendsare involved, or where stretching or drawing are also a consideration, the producer shall be consulted.9. Finish and Appearance9.1 Surface Finish:9.1.1 Unless otherwise specified, the material shall be furnished as rolled, that is, without removing the hot-rolled oxide or scale.9.1.2 When required, it is permissible to sp
