1、Designation: A 635/A 635M 08Standard Specification forSteel, Sheet and Strip, Heavy-Thickness Coils, Hot-Rolled,Alloy, Carbon, Structural, High-Strength Low-Alloy, andHigh-Strength Low-Alloy with Improved Formability, GeneralRequirements for1This standard is issued under the fixed designation A 635/
2、A 635M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reap
3、proval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification covers the general requirements forhot-rolled, heavy-thickness sheet and strip in coils.1.2 It applies to Specification A 1018/A 1018M.1.3 This material is available only in coils
4、described asfollows:Size Limits, Coils OnlyProduct Width, in. mm Thickness, in. mmStrip over 8 to 12, inclover 200 through 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 A 635/A 635M 06a
5、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 SpecificationA 568/A 568M 06a. The purchaser is advised to discuss this change withthe supplier.1.4 In case of any conf
6、lict in requirements, the requirementsof the individual material specification shall prevail over thoseof this general specification.1.5 Annex A1 lists permissible variations in dimensions andmass (see Note 2) in SI metric units. The values listed are notexact conversions of the values listed in the
7、 inch-pound tables,but instead are rounded or rationalized values. Conformance toAnnex A1 is mandatory when the “M” specification is used.NOTE 2The term weight is used when inch-pound units are thestandard. However, under SI, the preferred term is mass.1.6 The values stated in either SI units or inc
8、h-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 other. Combiningvalues from the two systems may result in non-conformancewith the standard.1.7 This specification and the app
9、licable material specifica-tions are expressed in both inch-pound units and SI units.However, unless the order specifies the applicable “M” speci-fication designation (SI units), the material shall be furnishedto inch-pound units.2. Referenced Documents2.1 ASTM Standards:2A 370 Test Methods and Defi
10、nitions for Mechanical Testingof Steel ProductsA 700 Practices for Packaging, Marking, and LoadingMethods for Steel Products for ShipmentA 568/A 568M Specification for Steel, Sheet, Carbon,Structural, and High-Strength, Low-Alloy, Hot-Rolled andCold-Rolled, General Requirements forA 751 Test Methods
11、, Practices, and Terminology forChemical Analysis of Steel ProductsA 941 Terminology Relating to Steel, Stainless Steel, Re-lated Alloys, and FerroalloysA 1018/A 1018M Specification for Steel, Sheet and Strip,Heavy-Thickness Coils, Hot-Rolled, Carbon, Commercial,Drawing, Structural, High-Strength Lo
12、w-Alloy, High-Strength Low-Alloy with Improved Formability, andUltra-High StrengthA 1031 Specification for Steel, Sheet and Strip, Heavy-Thickness Coils, Alloy, Drawing Steel and StructuralSteel, Hot-RolledE11 Specification for Wire Cloth and Sieves for TestingPurposesE29 Practice for Using Signific
13、ant Digits in Test Data toDetermine Conformance with Specifications2.2 Federal Standards:31This 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 ap
14、proved Nov. 1, 2008. Published January 2009. Originallyapproved in 1970. Last previous edition approved in 2007 as A 635/A 635M 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 informa
15、tion, refer to the standards Document Summary page onthe ASTM website.3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.1*A Summary of Changes section appears at the end of this standard.Copyright
16、 ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Fed. Std. No. 123 Marking for Shipment (Civil Agencies)2.3 Military Standards:3MIL-STD-129 Marking for Shipment and Storage3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 S
17、teel Types:3.1.2 carbon steelthe designation for steel when no mini-mum content is specified or required for aluminum, chromium,cobalt, columbium, molybdenum, nickel, titanium, tungsten,vanadium, zirconium, or any element added to obtain a desiredalloying effect; when the specified minimum for coppe
18、r doesnot exceed 0.40 %; or when the maximum content specified forany of the following elements does not exceed the percentagesnoted: manganese 1.65, silicon 0.60, or copper 0.60.3.1.2.1 DiscussionIn all carbon steels small quantities ofcertain residual elements unavoidably retained from raw ma-teri
19、als are sometimes found which are not specified or required,such as copper, nickel, molybdenum, chromium, etc. Theseelements are considered as incidental and are not normallydetermined or reported.3.1.3 high-strength, low-alloy steela specific group ofsteels in which higher strength, and in some cas
20、es additionalresistance to atmospheric corrosion or improved formability,are obtained by moderate amounts of one or more alloyingelements.3.2 Product Types:3.3 hot-rolled sheet and stripmanufactured by hot rollingslabs in a continuous mill to the required thickness; however,the product classificatio
21、n of sheet and strip is based on acombination of thickness and width (see Specification A 1018/A 1018M).3.4 steel manufacturer, nthe organization that directlycontrols, or is responsible for, the melting and refining of steeland the conversion of that steel into semifinished steel productsknown as s
22、labs either through continuous casting, conventionalor compact, or ingot casting and subsequent conversion of theingots to slabs, and for one or more additional operations suchas testing, marking, loading for shipment, and certification.3.5 hot roll manufacturer, nthe organization that directlycontr
23、ols, or is responsible for, the conversion of steel slabs, byhot rolling into coils, and for one or more additional operationssuch as leveling, cutting to length, testing, inspection, blank-ing, slitting, pickling, cold rolling, heat treating, coating,packaging, marking, loading for shipment, and ce
24、rtification.3.6 coil processor, nthe organization that directly con-trols, or is responsible for, operations involved in processingthe coil such as leveling, cutting to length, testing, inspection,blanking, slitting, pickling, cold rolling, heat treating, coating,packaging, marking, loading for ship
25、ment, and certification.3.6.1 DiscussionThe processing operations need not becontrolled by the organization that hot rolls the slab into a coil.If only one organization controls and/or is responsible for thehot rolling and processing operations, that organization istermed the hot roll manufacturer.
26、If more than one organizationcontrols and/or is responsible for hot rolling and processingoperations, the organization that controls and is responsible forthe hot rolling is termed the manufacturer and the organizationor organizations controlling and responsible for the processingoperations is/are t
27、ermed the coil processor or coil processors.3.7 Refer to Terminology A 941 for additional definitions ofterms used in this standard.4. Index of Tables, Dimensions, and Allowances4.1 See the following table.Index of Tables for Dimensions, Tolerances, and AllowancesDimensions Table No.Inch-PoundUnitsS
28、I UnitsCamberSheet 6 A1.5Strip 11 A1.10CrownStrip 9 A1.8ThicknessSheet 2, 3 A1.1, A1.2Strip 7, 8 A1.6, A1.7WidthSheet 4, 5 A1.3, A1.4Strip 10 A1.95. Materials and Manufacture5.1 Melting PracticeHot-rolled heavy thickness sheet andstrip coils are normally produced from rimmed, capped, orsemi-killed s
29、teel. If either coarse or fine-grain practice isspecified, special soundness steel will be furnished.5.2 Steel may be produced as ingot-cast or strand-cast.When different grades of strand-cast steel are sequentially cast,identification and separation of the transition material isrequired.5.3 The ste
30、el shall be in the hot-rolled condition.6. Chemical Composition6.1 Cast or Heat (Formerly Ladle) AnalysisAn analysisof each heat or cast shall be made by the steel manufacturer todetermine the conformance with the appropriate requirement.The analysis shall be from a test sample preferably takendurin
31、g the pouring of the heat or cast.6.1.1 Where the material is used for fabrication by welding,care must be exercised in selection of chemical composition ormechanical properties to assure compatibility with the weldingprocess and its effect on altering the properties.6.2 Product, Check, or Verificat
32、ion Analysis:6.2.1 Non-killed steels such as capped or rimmed steels arenot technologically suited to product analysis due to thenonuniform character of their chemical composition, andtherefore, the tolerances in Table 1 do not apply. Productanalysis is appropriate on these types of steel only whenm
33、isapplication is apparent, or for copper when copper steel isspecified.6.2.2 For steels other than non-killed (capped or rimmed),product analysis may be made by the purchaser. The chemicalanalysis shall not vary from the limits specified by more thanthe amounts in Table 1. The several determinations
34、 of anyelement in a cast shall not vary both above and below thespecified range.6.2.3 Sampling for Product Analysis:6.2.3.1 To indicate adequately the representative composi-tion of a cast by product analysis, it is general practice to selectsamples to represent the steel, as fairly as possible, fro
35、m aA 635/A 635M 082minimum number of pieces as follows: three pieces for lots upto 15 tons included, and six pieces for lots over 15 tons.6.2.3.2 When the steel is subject to tension test require-ments, samples for product analysis may be taken either bydrilling entirely through the used tension tes
36、t specimensthemselves, or as covered in 6.2.3.3.6.2.3.3 When the steel is not subject to tension test require-ments, the samples for analysis must be taken by milling ordrilling entirely through the sheet in a sufficient number ofplaces so that the samples are representative of the entire sheetor st
37、rip. The sampling may be facilitated by folding the sheetboth ways, so that several samples may be taken at one drilling.Steel subjected to certain heating operations by the purchasermay not give chemical analysis results that properly representits original composition. Therefore, users must analyze
38、 chipstaken from the steel in the condition in which it is receivedfrom the steel manufacturer.6.3 Specimen PreparationDrillings or chips must betaken without the application of water, oil, or other lubricant,and must be free of scale, grease, dirt, or other foreignsubstances. They must not be overh
39、eated during cutting to theextent of causing decarburization. Chips must be well mixedand those too coarse to pass a No. 10 sieve or too fine to remainon a No. 30 sieve are not suitable for proper analysis. Sievesize numbers are in accordance with Specification E11.6.4 Test MethodsIn case a referee
40、analysis is required andagreed upon to resolve a dispute concerning the results of achemical analysis, the procedure for performing the refereeanalysis must be in accordance with the latest issue of TestMethods, Practices, and Terminology A 751, unless otherwiseagreed upon between the manufacturer a
41、nd the purchaser.7. Mechanical Properties7.1 The mechanical property requirements, number ofspecimens, and test locations and specimen orientation shall bein accordance with the applicable product specification.7.2 Unless otherwise specified in the applicable productspecification, test specimens mus
42、t be prepared in accordancewith Test Methods and Definitions A 370.7.3 Mechanical tests shall be conducted in accordance withTest Methods and Definitions A 370.7.4 To determine conformance with the product specifica-tion, a calculated value shall be rounded to the nearest 1 ksitensile strength and y
43、ield point or yield strength, and to thenearest unit in the right hand place of figures used in expressingthe limiting value for other values in accordance with therounding off method given in Practice E29.8. Dimensions and Tolerances8.1 The permissible tolerances for dimensions shall notexceed the
44、applicable limits specified in Tables 2-6 for hot-rolled and hot-rolled, pickled-sheet coils and Tables 7-11 forhot-rolled and hot-rolled, pickled-strip coils (AnnexA1, TablesA1.1-A1.10).9. Workmanship, Finish, and Appearance9.1 The steel shall have a workmanlike appearance and shallnot have defects
45、 of a nature or degree that will be detrimentalto the stamping or fabrication of finished parts.TABLE 1 Tolerances for Product AnalysisElementLimit, or Maximum ofSpecified Element, %ToleranceUnderMini-mumLimitOverMaxi-mumLimitCarbon to 0.15, incl 0.02 0.03over 0.15 to 0.25, incl 0.03 0.04Manganese t
46、o 0.60, incl 0.03 0.03over 0.60 to 1.15, incl 0.04 0.04over 1.15 to 1.65, incl 0.05 0.05Phosphorus . . . 0.01Sulfur . . . 0.01Silicon to 0.30, incl 0.02 0.03over 0.30 to 0.60, incl 0.05 0.05Copper 0.02 . . .TABLE 2 Standard Thickness Tolerances for Heavy-Thickness Hot-Rolled Sheet (Carbon and High-S
47、trength Low-Alloy Steel)38-in.(Cut Edge) and34-in. (Mill Edge) Minimum Edge Distance (Coils Only)NOTE 1Thickness is measured at any point across the width not less than38 in. from a cut edge and not less than34 in. from a mill edge. This tabledoes not apply to the uncropped ends of mill edge coils.N
48、OTE 2Micrometers used for measurement of thickness shall be constructed with anvils and spindles having minimum diameters of 0.188 in. 4.80mm. The tip of the spindle shall be flat, and the tip of the anvil shall be flat or rounded with a minimum radius of curvature of 0.10 in. 2.55 mm.Micrometers wi
49、th pointed tips are not suitable for thickness measurements.Specified Width, in.Specified Ordered Thickness, in.A0.230 to0.313, inclOver 0.313 to0.375, inclOver 0.375 to0.500, inclOver 0.500 to0.625, inclOver 0.625 to1.000, inclThickness Tolerances Over, in., No Tolerance UnderBOver 12 to 20, incl 0.020 0.024 0.028 0.030 0.032Over 20 to 40, incl 0.022 0.024 0.028 0.030 0.032Over 40 to 48, incl 0.024 0.026 0.028 0.030 0.032Over 48 to 60, incl 0.024 0.028 0.030 0.032 0.034Over 60 to 72, incl 0.026 0.030 0.032 0.036 0.038Over 72 0.030 0
