1、Designation: A1018/A1018M 16aA1018/A1018M 18Standard Specification forSteel, Sheet and Strip, Heavy-Thickness Coils, Hot-Rolled,Carbon, Commercial, Drawing, Structural, High-StrengthLow-Alloy, High-Strength Low-Alloy with ImprovedFormability, and Ultra-High Strength1This standard is issued under the
2、 fixed designation A1018/A1018M; 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
3、the last revision or reapproval.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This specification covers hot-rolled, heavy-thickness coils beyond the size limits of Specification A1011/A1011M.1.2 The product is available in six designations: Commer
4、cial Steel, Drawing Steel, Structural Steel, High-Strength Low-AlloySteel, High-Strength Low-Alloy Steel with Improved Formability, and Ultra-High Strength Steel.1.3 This material is available only in coils described as follows:Product Size Limits, Coils OnlyWidth, in. mm Thickness, in. mmStrip Over
5、 8 to 12, inclOver 200 to 3000.230 to 1.000, inclFrom 6.0 through 25Sheet Over 12Over 3000.230 to 1.000, inclFrom 6.0 through 25NOTE 1The changes in width limits with the publication of A635/A635M 06a result in a change in tensile testing direction for material from 0.180in. 4.5 mm to 0.230 in. excl
6、usive 6.0 mm exclusive over 48 in. 1200 mm wide as that material is now covered by Specification A568/A568M 06a.The purchaser is advised to discuss this change with the supplier.1.4 Sheet and strip in coils of sizes noted in 1.3 are covered by this specification only with the following provisions:1.
7、4.1 The material is to be fed directly from coils into a blanking press, drawing or forming operation, tube mill, rolling mill,or sheared or slit into blanks for subsequent drawing or forming.1.4.2 The material is not to be converted into steel plates for structural or pressure vessel use unless tes
8、ted in completeaccordance with the appropriate sections of Specifications A6/A6M (plates provided from coils) or A20/A20M (plates producedfrom coils). Plate converted from coils is no longer governed by this sheet steel specification and since this material is now a plate,the requirements of the app
9、ropriate plate specification shall apply, except in cases where there is a conflict between therequirements of the plate specification and this specification. In these cases, the more restrictive limits of either specification shallapply.1.4.3 The dimensional tolerances of Specification A635/A635M a
10、re applicable to material produced to this specification.1.4.4 Not all strength levels are available in all thicknesses. The user should consult the producer for appropriate sizelimitations.1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The va
11、lues stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.1.6 This international standard was developed in accordance with internationally recognized pr
12、inciples on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.1 This specification is under the jurisdiction ofASTM Committee A01 on Ste
13、el, Stainless Steel and RelatedAlloysand is the direct responsibility of Subcommittee A01.19on Steel Sheet and Strip.Current edition approved Sept. 1, 2016May 15, 2018. Published September 2016June 2018. Originally approved in 2001. Last previous edition approved in 2016 asA1018/A1018M 16.A1018/A101
14、8M 16a. DOI: 10.1520/A1018_A1018M-16A. 10.1520/A1018_A1018M-18.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 version. Becauseit may not be technically possible to adequately depict all c
15、hanges 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 standardCopyright ASTM International, 100
16、Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12. Referenced Documents2.1 ASTM Standards:2A6/A6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet PilingA20/A20M Specification for General Requirements for Steel Plates
17、for Pressure VesselsA370 Test Methods and Definitions for Mechanical Testing of Steel ProductsA568/A568M Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled,General Requirements forA572/A572M Specification for High-Strength Low-Alloy Columbium
18、-Vanadium Structural SteelA635/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 forA751 Test Methods, Practices, and Terminology for Chemic
19、al Analysis of Steel ProductsA941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and FerroalloysA1011/A1011M Specification for Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High StrengthE
20、29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsG101 Guide for Estimating the Atmospheric Corrosion Resistance of Low-Alloy Steels3. Terminology3.1 DefinitionsFor definitions of other terms used in this specification refer to Terminology A941.3.2 Def
21、initions of Terms Specific to This Standard:3.2.1 inclusion control, nthe process of reducing the volume fraction of inclusions or modifying the shape of inclusions toimprove formability, weldability, and machinability.3.2.1.1 DiscussionInclusions, especially those elongated during the rolling proce
22、ss, create the conditions for initiating or propagating cracks, or both,when 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, or by altering the shape of inclusions through the use of
23、 additions during the steelmakingprocess that change the elongated shape of the inclusions to less harmful small, well dispersed globular inclusions, or both.4. General Requirements for Delivery4.1 Material furnished under this specification shall conform to the applicable requirements of the curren
24、t edition ofSpecification A635/A635M, unless otherwise provided herein.5. Classification5.1 Heavy thickness coils are available in the following designations:5.1.1 Commercial Steel (CS Types A, B, and C):5.1.1.1 Commercial Steel, CS Types A and B combined with chemistry grade in accordance with Spec
25、ification A635/A635MTable X1.3. (CS Type A-1006, CS Type A-1008, and so forth).5.1.1.2 Commercial Steel Designations, in accordance with Specification A635/A635M Table X1.1, with no type specified,(CS-1005, CS-1006, CS-1020, and so forth).5.1.2 Drawing Steel (DS Types A and B):5.1.2.1 Drawing Steel,
26、 DS TypesAand B combined with chemistry grade per Specification A635/A635M Table X1.3. (DS TypeA-1005, DS Type B-1006, and so forth.)5.1.3 Structural Steel(SS Grades 30205, 33230, 36250 Types 1 and 2, 40275 and 45310).5.1.4 High-Strength Low-Alloy Steel(HSLAS Grades 45310, 50340, 55380, 60410, 65450
27、, 70480) in Classes 1 and2.5.1.4.1 This material is intended for miscellaneous applications where greater strength and savings in weight are important. Thematerial is available in two classes. They are similar in strength level, except that Class 2 offers improved weldability and moreformability tha
28、n Class 1. Atmospheric corrosion resistance of these steels is equivalent to plain carbon steels. With copperspecified, the atmospheric corrosion is somewhat enhanced.5.1.5 High-Strength Low-Alloy Steel with Improved Formability(HSLAS-F Grades 50340, 60410, 70480, 80550).5.1.5.1 This material has im
29、proved formability when compared with HSLAS. The steel is killed and made to a fine ferritic grainpractice and includes microalloying elements such as columbium, titanium, vanadium, zirconium, and so forth. The steel shall be2 For referencedASTM standards, visit theASTM website, www.astm.org, or con
30、tactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.A1018/A1018M 182treated to achieve inclusion control. The material is intended for miscellaneous applications where higher strength, sav
31、ings inweight, improved formability, and weldability are important.Atmospheric corrosion resistance of these steels is equivalent to plaincarbon steels. With copper specified, the atmospheric corrosion resistance is somewhat enhanced.NOTE 2For methods of establishing the atmospheric corrosion resist
32、ance of low-alloy steels, see Guide G101.5.1.6 Ultra-High Strength Steel(UHSS Grades 90 620 and 100 690, Types 1 and 2).5.1.6.1 This material has increased strength compared with HSLAS-F. The steel is killed and made to a fine ferritic grainpractice, and includes microalloying elements such as colum
33、bium (niobium), titanium, vanadium, molybdenum, and so forth. Thesteel shall be treated to achieve inclusion control. The material is intended for miscellaneous applications where higher strength,savings in weight, and weldability are important. Atmospheric corrosion resistance of these steels is eq
34、uivalent to plain carbonsteels. With copper specified, the atmospheric corrosion resistance is somewhat enhanced.5.1.7 When required for HSLAS, HSLAS-F, and UHSS steels, limitations on the use of one or more of the microalloy elementsshall be specified on the order.5.2 The limits for copper, chromiu
35、m, nickel, and molybdenum are available in two levels, Limits A and Limits B (see Table 1).6. Ordering Information6.1 Orders for material under this specification shall include the following information, as required, to describe adequately thedesired material.6.1.1 ASTM specification number and year
36、 of issue.6.1.2 Name of material and designation (hot-rolled steel sheet or hot-rolled strip) (include grade and, as appropriate, type andclass for CS, DS, SS, HSLAS, HSLAS-F, and UHSS) (see 5.1).6.1.2.1 For CS and DS, when a type is not specified, Type B will be furnished.(1) When a chemistry grade
37、 is specified in accordance with Specification A635/A635M Table X1.3, the grade shall befurnished as CS Type B-1008, DS Type A-1005, and so forth.(2) When only a Steel Designation is specified in accordance with Specification A635/A635M Table X1.1, with no referenceto CS Type A, CS Type B, DS Type A
38、 or DS Type B, the grade shall be furnished as CS-1005, CS-1008, CS-1020, and so forth.6.1.2.2 For SS Grade 36, when a type is not specified, Type 1 will be furnished (see 5.1).6.1.2.3 For UHSS, when a type is not specified, Type 1 shall be furnished.6.1.2.4 For HSLAS, when a class is not specified,
39、 Class 1 will be furnished (see 5.1),6.1.3 Copper bearing, (if required),TABLE 1 Chemical Requirements: Cu, Ni, Cr and Mo for Commercial Steels, Structural Steels, High-Strength Low-Alloy Steels, andHigh-Strength Low-Alloy Steels with Improved Formability% Heat Analysis, Element Maximum Unless Other
40、wise ShownDesignation Limits CuA,B NiB CrB,C MoB,CCS:Grades 10021095, A 0.20 0.20 0.15 0.0615151566 B 0.40 0.40 0.30 0.12SS:All grades A 0.20 0.20 0.15 0.06B 0.40 0.40 0.30 0.12HSLAS:All grades and classes A 0.20 0.20 0.15 0.06except for Grade 70480B 0.40 0.40 0.30 0.12Grade 70 480 Class 1and Class
41、2A 0.20 0.20 0.15 0.16B 0.40 0.40 0.30 0.16HSLAS-F:Grades 50 340 and60 410A 0.20 0.20 0.15 0.06B 0.40 0.40 0.30 0.12Grade 70 480 and 80550A 0.20 0.20 0.15 0.16B 0.40 0.40 0.30 0.16A When copper bearing steel is specified, the minimum limit for copper is 0.20 %. When copper bearing steel is not speci
42、fied, the maximum limit for copper is as shownin the table.B For Limits B steels, the sum of copper, nickel, chromium and molybdenum shall not exceed 1.00 % on heat analysis. When one or more of these elements are specifiedby the purchaser, the sum does not apply; in which case, only the individual
43、limits on the remaining elements shall apply.C For Limits B steels, the sum of chromium and molybdenum shall not exceed 0.32 % on heat analysis. When one or more of these elements are specified, the sum doesnot apply; in which case, only the individual limits on the remaining elements shall apply.A1
44、018/A1018M 1836.1.4 For SS, HSLAS, and HSLAS-F and selected CS steels, specify the limits for chemical requirements listed in Table 1(elements Cu, Cr, Ni, and Mo). When Limits A or Limits B is not specified, Limits A shall be furnished.6.1.5 ConditionMaterial in accordance with this specification is
45、 furnished in the hot rolled condition. Pickled (or blastcleaned) must be specified if required. Material ordered as pickled (or blast cleaned) will be oiled unless ordered dry,6.1.6 Type of edge must be specified for hot rolled sheet coils and strip coils, either mill edge or cut edge (sheet), mill
46、 edge orslit edge (strip),6.1.7 Dimensions (decimal thickness and width of material),NOTE 3Not all producers are capable of meeting all the limitations of the thickness tolerance tables in Specification A635/A635M. The purchasershould contact the producer regarding possible limitations prior to plac
47、ing an order.6.1.8 Coils size and weight requirements (must include inside diameter (ID), outside diameter (OD), and maximum weight),6.1.9 Quantity (weight),6.1.10 Application (part identification and description). Orders for conversion to plate shall include reference to the applicableASTM plate sp
48、ecification.6.1.11 A report is required of heat analysis and mechanical properties as determined by the tension test, and6.1.12 Special requirements (if any).6.1.12.1 When the purchaser requires a limit on “carbon equivalent” (see Supplementary Requirement S1), this requirementshall be specified in
49、the purchase order or contract.6.1.12.2 When the purchaser requires thickness tolerances for 38 in. 10 mm minimum edge distance (see SupplementaryRequirement in Specification A635/A635M), this requirement shall be specified in the purchase order or contract.NOTE 4A typical ordering description is as follows: (inch pound units) ASTM A1018/A1018M: Grade 50, High-Strength, Low-Alloy Steel, Class2, Limits B, hot rolled sheet coils, pickled and oiled, cut edge, 0.500 by 40 in. by coil; ID 24 in., O
