1、Designation: A1018/A1018M 10Standard 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 designati
2、on 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 the last revisio
3、n or reapproval.1. Scope*1.1 This specification covers hot-rolled, heavy-thicknesscoils beyond the size limits of Specification A1011/A1011M.1.2 The product is available in six designations: Commer-cial Steel, Drawing Steel, Structural Steel, High-StrengthLow-Alloy Steel, High-Strength Low-Alloy Ste
4、el 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 to 1.00
5、0, 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 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 SpecificationA568/A5
6、68M 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 operation, tub
7、e 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 SpecificationsA6/A6M (plates provided from coils)
8、 or A20/A20M (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 requirements of
9、the plate specification andthis specification. In these cases, the more restrictive limits ofeither specification shall apply.1.4.3 The dimensional tolerances of Specification A635/A635M are applicable to material produced to this specifica-tion.1.4.4 Not all strength levels are available in all thi
10、cknesses.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 independently of the
11、other. Combiningvalues from the two systems may result in non-conformancewith the standard.2. Referenced Documents2.1 ASTM Standards:2A6/A6M Specification for General Requirements for RolledStructural Steel Bars, Plates, Shapes, and Sheet PilingA20/A20M Specification for General Requirements forStee
12、l Plates for Pressure VesselsA370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA568/A568M Specification for Steel, Sheet, Carbon, Struc-tural, and High-Strength, Low-Alloy, Hot-Rolled andCold-Rolled, General Requirements forA572/A572M Specification for High-Strength Low-AlloyC
13、olumbium-Vanadium Structural SteelA635/A635M Specification for Steel, Sheet and Strip,1This 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 approv
14、ed June 1, 2010. Published July 2010. Originally approvedin 2001. Last previous edition approved in 2009 as A1018/A1018M 09. DOI:10.1520/A1018_A1018M-10.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMSt
15、andards volume information, refer to the standards Document Summary 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.Heavy-Thickness Coils, Hot-
16、Rolled, Alloy, Carbon, Struc-tural, High-Strength Low-Alloy, and High-Strength Low-Alloy with Improved Formability, General RequirementsforA751 Test Methods, Practices, and Terminology for Chemi-cal Analysis of Steel ProductsA941 Terminology Relating to Steel, Stainless Steel, Re-lated Alloys, and F
17、erroalloysA1011/A1011M 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 SpecificationsG101 Guid
18、e for Estimating the Atmospheric CorrosionResistance of Low-Alloy Steels3. Terminology3.1 DefinitionsFor definitions of other terms used in thisspecification refer to Terminology A941.3.2 Definitions of Terms Specific to this Standard3.2.1 inclusion control, nthe process of reducing thevolume fracti
19、on of inclusions 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
20、the manufacture 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,wel
21、l dispersed 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 A635/A635M, unless otherwise provided herein.5. Classification5.1 Heavy thickness coils are availab
22、le in the 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 Grade
23、s45310, 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
24、 weldabil-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, 70480,8
25、0550).5.1.5.1 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 material
26、is intended 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-h
27、anced.NOTE 2For methods of establishing the atmospheric corrosion resis-tance of low-alloy steels, see Guide G101.5.1.6 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 fe
28、rritic 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 weldabilit
29、y are 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 microalloyel
30、ements 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
31、 adequatelythe 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
32、 is not 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 Copp
33、er bearing, (if required),6.1.4 For SS, HSLAS, and HSLAS-F and selected CSsteels, specify the limits for chemical requirements listed inA1018/A1018M 102Table 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
34、with this specifi-cation 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,6.1.6 Type of edge must be specified for hot rolled sheetcoils and strip coils, either mill edge
35、or cut edge (sheet), milledge or slit edge (strip),6.1.7 Dimensions (decimal thickness and width of material),NOTE 3Not all producers are capable of meeting all the limitations ofthe thickness tolerance tables in Specification A635/A635M. The pur-chaser should contact the producer regarding possible
36、 limitations prior toplacing an order.6.1.8 Coils size and weight requirements (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 the
37、applicable ASTM plate specification.6.1.11 A report is required of heat analysis and mechanicalproperties as determined by the tension test, and6.1.12 Special requirements (if any).6.1.12.1 When the purchaser requires a limit on “carbonequivalent” (see Supplementary Requirement S1), this require-men
38、t shall be specified in the purchase order or contract.6.1.12.2 When the purchaser requires thickness tolerancesfor38 in. 10 mm minimum edge distance (see SupplementaryRequirement in Specification A635/A635M), this requirementshall be specified in the purchase order or contract.NOTE 4A typical order
39、ing description is as follows: (inch poundunits) ASTM A1018/A1018M: Grade 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 sha
40、pes; (SI units)ASTM A1018/A1018M: Grade 340, High-Strength Low-Alloy 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-po
41、und units) ASTM A1018/A1018M: Grade 50, High-Strength Low-Alloy Steel, 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 A572/A572M Grade 50; (S
42、I units) ASTM A1018/A1018M: Grade 340, Structural Steel, hot-rolled sheet coils, as rolled, milledge; 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 to plate,Specification A572/A572M Grade 340.7. Chemical Composition7.1 The heat anal
43、ysis of commercial steel and drawing steelshall conform to 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 the
44、requirements of Table 2 and Table 3.7.3 Table 1 describes the 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 con
45、ducted in accordancewith Test Methods, Practices, and Terminology A751.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 Otherwi
46、se 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 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 0.3
47、0 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 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
48、%. 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 ap
49、ply; in which case, only the individual limits on the remaining elements shall apply.CFor 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 sumdoes not apply; in which case, only the individual limits on the remaining elements shall apply.A1018/A1018M 1037.5 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 mol
