1、Designation: A 1018/A 1018M 08Standard 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 fixed designa
2、tion A 1018/A 1018M; 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 rev
3、ision or reapproval.1. Scope*1.1 This specification covers hot-rolled, heavy-thicknesscoils beyond the size limits of Specification A 1011/A 1011M.1.2 The product is available in six designations: Commer-cial Steel, Drawing Steel, Structural Steel, High-StrengthLow-Alloy Steel, High-Strength Low-All
4、oy Steel with Im-proved Formability, and Ultra-High Strength Steel.1.3 This material is available only in coils described asfollows:Product Size Limits, Coils OnlyWidth, in. mm Thickness, in. mmStrip Over 8 to 12, inclOver 200 to 3000.230 to 1.000, inclFrom 6.0 through 25Sheet Over 12Over 3000.230 t
5、o 1.000, inclFrom 6.0 through 25NOTE 1The changes in width limits with the publication of A 635/A 635M 06a result in a change in tensile testing direction for materialfrom 0.180 in. 4.5 mm to 0.230 in. exclusive 6.0 mm exclusive over 48in. 1200 mm wide as that material is now covered by Specificatio
6、nA 568/A 568M 06a. The purchaser is advised to discuss this change withthe supplier.1.4 Sheet and strip in coils of sizes noted in 1.3 are coveredby this specification only with the following provisions:1.4.1 The material is to be fed directly from coils into ablanking press, drawing or forming oper
7、ation, tube mill, rollingmill, or sheared or slit into blanks for subsequent drawing orforming.1.4.2 The material is not to be converted into steel plates forstructural or pressure vessel use unless tested in completeaccordance with the appropriate sections of SpecificationsA 6/A 6M (plates provided
8、 from coils) or A 20/A 20M (platesproduced from coils). Plate converted from coils is no longergoverned by this sheet steel specification and since thismaterial is now a plate, the requirements of the appropriateplate specification shall apply, except in cases where there is aconflict between the re
9、quirements of the plate specification andthis specification. In these cases, the more restrictive limits ofeither specification shall apply.1.4.3 The dimensional tolerances of Specification A 635/A 635M are applicable to material produced to this specifica-tion.1.4.4 Not all strength levels are avai
10、lable in all thicknesses.The user should consult the producer for appropriate sizelimitations.1.5 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used indep
11、endently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.2. Referenced Documents2.1 ASTM Standards:2A 6/A 6M Specification for General Requirements forRolled Structural Steel Bars, Plates, Shapes, and SheetPilingA 20/A 20M Specification for General R
12、equirements forSteel Plates for Pressure VesselsA 370 Test Methods 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 572/A 572M Specification for Hi
13、gh-Strength Low-AlloyColumbium-Vanadium Structural SteelA 635/A 635M Specification for Steel, Sheet and Strip,Heavy-Thickness Coils, Hot-Rolled, Carbon, Structural,High-Strength Low-Alloy, and High-Strength Low-Alloywith Improved Formability, General Requirements forA 751 Test Methods, Practices, an
14、d Terminology forChemical Analysis of Steel Products1This 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 July 1, 2008. Published July 20
15、08. Originally approvedin 2001. Last previous edition approved in 2007 as A 1018/A 1018M 07.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document S
16、ummary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.A 941 Terminology Relating to Steel, Stainless Steel, Re-lated Alloys, and FerroalloysA
17、1011/A 1011M Specification for Steel, Sheet and Strip,Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy,High-Strength Low-Alloy with Improved Formability, andUltra-High StrengthE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsG 101 Guide for Est
18、imating the Atmospheric CorrosionResistance of Low-Alloy Steels3. Terminology3.1 DefinitionsFor definitions of other terms used in thisspecification refer to Terminology A 941.3.2 Definitions of Terms Specific to this Standard3.2.1 inclusion control, nthe process of reducing thevolume fraction of in
19、clusions or modifying the shape ofinclusions to improve formability, weldability, and machinabil-ity.3.2.1.1 DiscussionInclusions, especially those elongatedduring the rolling process, create the conditions for initiatingand/or propagating cracks when the material is stretched orbent during the manu
20、facture of a part. The adverse effects ofinclusions are minimized by reducing the content of inclusionsin the steel and/or by altering the shape of inclusions throughthe use of additions during the steelmaking process that changethe elongated shape of the inclusions to less harmful small,well disper
21、sed globular inclusions.4. General Requirements for Delivery4.1 Material furnished under this specification shall con-form to the applicable requirements of the current edition ofSpecification A 635/A 635M, unless otherwise providedherein.5. Classification5.1 Heavy thickness coils are available in t
22、he followingdesignations:5.1.1 Commercial Steel (CS Types A and B, and StandardSteel Designations)5.1.2 Drawing Steel (DS Types A and B, and Standard SteelDesignations)5.1.3 Structural Steel(SS Grades 30205, 33230,36250 Types 1 and 2, and 40275).5.1.4 High-Strength Low-Alloy Steel(HSLAS Grades45310,
23、 50340, 55380, 60410, 65450, 70480) inClasses 1 and 2.5.1.4.1 This material is intended for miscellaneous applica-tions where greater strength and savings in weight are impor-tant. The material is available in two classes. They are similarin strength level, except that Class 2 offers improved weldab
24、il-ity and more formability than Class 1. Atmospheric corrosionresistance of these steels is equivalent to plain carbon steels.With copper specified, the atmospheric corrosion is somewhatenhanced.5.1.5 High-Strength Low-Alloy Steel with ImprovedFormability(HSLAS-F Grades 50340, 60410, 70480,80550).5
25、.1.5.1 This material has improved formability when com-pared with HSLAS. The steel is killed and made to a fineferritic grain practice and includes microalloying elementssuch as columbium, titanium, vanadium, zirconium, etc. Thesteel shall be treated to achieve inclusion control. The materialis inte
26、nded for miscellaneous applications where higherstrength, savings in weight, improved formability, and weld-ability are important.Atmospheric corrosion resistance of thesesteels is equivalent to plain carbon steels. With copper speci-fied, the atmospheric corrosion resistance is somewhat en-hanced.N
27、OTE 2For methods of establishing the atmospheric corrosion resis-tance of low-alloy steels, see Guide G 101.5.1.6 Ultra-High Strength Steel(UHSS Grades 90 620and 100 690, Types 1 and 2).5.1.6.1 This material has increased strength compared withHSLAS-F. The steel is killed and made to a fine ferritic
28、 grainpractice, and includes microalloying elements such as colum-bium (niobium), titanium, vanadium, molybdenum, and soforth. The steel shall be treated to achieve inclusion control.The material is intended for miscellaneous applications wherehigher strength, savings in weight, and weldability are
29、impor-tant.Atmospheric corrosion resistance of these steels is equiva-lent to plain carbon steels. With copper specified, the atmo-spheric corrosion resistance is somewhat enhanced.5.1.7 When required for HSLAS, HSLAS-F, and UHSSsteels, limitations on the use of one or more of the microalloyelements
30、 shall be specified on the order.5.2 The limits for copper, chromium, nickel, and molybde-num are available in two levels, Limits A and Limits B (seeTable 1).6. Ordering Information6.1 Orders for material under this specification shall includethe following information, as required, to describe adequ
31、atelythe desired material.6.1.1 ASTM specification number and year of issue.6.1.2 Name of material and designation (hot-rolled steelsheet or hot-rolled strip) (include grade and, as appropriate,type and class for CS, DS, SS, HSLAS, HSLAS-F, and UHSS)(see 5.1).6.1.2.1 For CS and DS, when a type is no
32、t specified, Type Bwill be furnished.6.1.2.2 For SS Grade 36, when a type is not specified, Type1 will be furnished (see 5.1).6.1.2.3 For UHSS, when a type is not specified, Type 1 shallbe furnished.6.1.2.4 For HSLAS, when a class is not specified, Class 1will be furnished (see 5.1),6.1.3 Copper bea
33、ring, (if required),6.1.4 For SS, HSLAS, and HSLAS-F and selected CSsteels, specify the limits for chemical requirements listed inTable 1 (elements Cu, Cr, Ni, and Mo). When Limits A orLimits B is not specified, Limits A shall be furnished.6.1.5 ConditionMaterial in accordance with this specifi-cati
34、on is furnished in the hot rolled condition. Pickled (or blastcleaned) must be specified if required. Material ordered aspickled (or blast cleaned) will be oiled unless ordered dry,A 1018/A 1018M 0826.1.6 Type of edge must be specified for hot rolled sheetcoils and strip coils, either mill edge or c
35、ut edge (sheet), milledge or slit edge (strip),6.1.7 Dimensions (decimal thickness and width of material),6.1.7.1 As agreed upon between the purchaser and theproducer, material ordered to this specification will be suppliedto meet the appropriate standard or restricted thickness toler-ances shown in
36、 Specification A 635/A 635M,NOTE 3Not all producers are capable of meeting all the limitations ofthe thickness tolerance tables in Specification A 635/A 635M. The pur-chaser should contact the producer regarding possible limitations prior toplacing an order.6.1.8 Coils size and weight requirements (
37、must includeinside diameter (ID), outside diameter (OD), and maximumweight,6.1.9 Quantity (weight),6.1.10 Application (part identification and description). Or-ders for conversion to plate shall include reference to theapplicable ASTM plate specification.6.1.11 Special requirements, if required, and
38、6.1.11.1 If required, a limit on “carbon equivalent” may bespecified (see Supplementary Requirement S1).6.1.12 A report is required of heat analysis and mechanicalproperties as determined by the tension test.NOTE 4A typical ordering description is as follows: (inch poundunits) ASTM A 1018/A 1018M: G
39、rade 50, High-Strength, Low-AlloySteel, Class 2, Limits B, hot rolled sheet coils, pickled and oiled, cut edge,0.500 by 40 in. by coil; ID 24 in., OD 72 in., maximum; coil weight40 000 lb., maximum; 200 000 lb. for roll forming shapes; (SI units)ASTM A 1018/A 1018M: Grade 340, High-Strength Low-Allo
40、y Steel,Class 2, Limits B, hot-rolled sheet coils, pickled and oiled, cut edge; 10mm by 900 mm by coil; ID 600 mm, OD 1800 mm, maximum; coil weight18 000 kg maximum; 90 000 kg for roll forming shapes. For conversion toplate: (inch-pound units) ASTM A 1018/A 1018M: Grade 50, High-Strength Low-Alloy S
41、teel, Class 1, Limits A, hot-rolled sheet coils, asrolled, mill edge, 0.500 in. by 50 in. by coil, ID 24 in., OD 72 in.,maximum; coil weight 40 000 lb., maximum; 200 000 lb. for conversionto plate, Specification A 572/A 572M Grade 50; (SI units) ASTM A 1018/A 1018M: Grade 340, Structural Steel, hot-
42、rolled sheet coils, as rolled,mill edge; 10 mm by 1000 mm by coil; ID 600 mm, OD 1800 mm,maximum; coil weight 18 000 kg maximum; 100 000 kg for conversion toplate, Specification A 572/A 572M Grade 340.7. Chemical Composition7.1 The heat analysis of commercial steel and drawing steelshall conform to
43、the requirements of Table 2, and whereappropriate, Table 3.7.2 The heat analysis of structural steel, high-strength low-alloy steel, high-strength low-alloy steel with improved form-ability, and ultra-high strength steel shall conform to therequirements of Table 2 and Table 3.7.3 Table 1 describes t
44、he heat analysis requirements for twosets of limits (A and B) for the elements copper, chromium,nickel, and molybdenum. The required set of limits (A and B)for these elements shall be specified on the order.7.4 Chemical analysis shall be conducted in accordancewith Test Methods, Practices, and Termi
45、nology A 751.7.5 Each of the elements listed in Tables 2 and 4 shall beincluded in the report of the heat analysis. When the amount ofcopper, nickel, chromium, or molybdenum is less than 0.02 %,report the analysis as 0.02 % or the actual value. When theamount of columbium, titanium, or vanadium is l
46、ess than0.008 %, report the analysis as 0.008 % or the actual deter-mined value. When the amount of boron is less than 0.0005 %,report the analysis as 0.0005 % or the actual determinedvalue.TABLE 1 Chemical Requirements: Cu, Ni, Cr and Mo for Commercial Steels, Structural Steels, High-Strength Low-A
47、lloy Steels, andHigh-Strength Low-Alloy Steels with Improved Formability% Heat Analysis, Element Maximum Unless Otherwise ShownDesignation Limits CuA,BNiBCrB,CMoB,CCS: A 0.20 0.20 0.15 0.06Grades 1015, 1016, 1017, 1018, 1019,1020, 1021, 1022, 1023, 1524B 0.40 0.40 0.30 0.12SS:All grades A 0.20 0.20
48、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 70 480 B 0.40 0.40 0.30 0.12Grade 70 480 Class 1 and Class 2 A 0.20 0.20 0.15 0.16B 0.40 0.40 0.30 0.16HSLAS-F:Grades 50 340 and 60 410 A 0.20 0.20 0.15 0.06B 0.40 0.40 0.30 0.12Grade 70 480 and 80 550 A
49、 0.20 0.20 0.15 0.16B 0.40 0.40 0.30 0.16AWhen copper bearing steel is specified, the minimum limit for copper is 0.20 %. When copper bearing steel is not specified, the maximum limit for copper is as shownin the table.BFor 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 limits on the remaining elements shall apply.CFor Li
