1、Designation: A 635/A 635M 09Standard 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 designationA 635/A
2、 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 reapp
3、roval.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 d
4、escribed 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 All WidthsAAll Widths0.230 to 1.000, inclfrom 6.0 through 25AHot-rolled heavy thickness sheet in coils less than 12 in. 300 mm and
5、 less inwidth must have slit edges. Hot-rolled heavy thickness coils 12 in. 300 mm andwider with mill edge is considered hot-rolled heavy thickness strip.NOTE 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
6、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 conflict in requirements, the requirementsof the individual material specif
7、ication 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 inch-pound tables,but instead are rounded or rationalized values. Conf
8、ormance 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 inch-pound unitsare to be regarded separately as standard. The values stat
9、ed 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 applicable material specifica-tions are expressed in both inch-pound units
10、 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 Definitions for Mechanical Testingof Steel ProductsA 700 Practices for Pack
11、aging, 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, Practices, and Terminology forChemical Analysis of Steel ProductsA 94
12、1 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 Low-Alloy, High-Strength Low-Alloy with Improved Formability, andUltra-Hi
13、gh 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 Significant Digits in Test Data toDetermine Conformance with Specifications1Thi
14、s 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 May 1, 2009. Published May 2009. Originallyapproved in 1970. Last previous edition appr
15、oved in 2008 as A 635/A 635M 08.2For 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 Summary page onthe ASTM website.1*A Summary of Changes sectio
16、n appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.2.2 Federal Standards:3Fed. Std. No. 123 Marking for Shipment (Civil Agencies)2.3 Military Standards:3MIL-STD-129 Marking for Shipment and Storage3.
17、 Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 Steel 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
18、 obtain a desiredalloying effect; when the specified minimum for copper 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 quanti
19、ties ofcertain residual elements unavoidably retained from raw ma-terials 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 st
20、eela specific group ofsteels in which higher strength, and in some cases 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 contin
21、uous mill to the required thickness; however,the product classification 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 t
22、he conversion of that steel into semifinished steel productsknown as slabs 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 certifi
23、cation.3.5 hot roll manufacturer, nthe organization that directlycontrols, 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, h
24、eat treating, coating,packaging, marking, loading for shipment, and certification.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, col
25、d rolling, heat treating, coating,packaging, marking, loading for shipment, 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 or is responsible (or both) forthe hot rolling and p
26、rocessing operations, that organization istermed the hot roll manufacturer. If more than one organizationcontrols or is responsible (or both) for hot rolling and process-ing operations, the organization that controls and is responsiblefor the hot rolling is termed the manufacturer and the organi-zat
27、ion or organizations controlling and responsible for theprocessing operations is/are termed the coil processor or coilprocessors.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
28、Tables for Dimensions, Tolerances, and AllowancesDimensions Table No.Inch-PoundUnitsSI 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 thic
29、kness sheet andstrip coils are normally produced from rimmed, capped, orsemi-killed steel. 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
30、 cast,identification and separation of the transition material isrequired.5.3 The steel 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 a
31、ppropriate requirement.The analysis shall be from a test sample preferably takenduring 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 weld
32、ingprocess and its effect on altering the properties.6.2 Product, Check, or Verification 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 Ta
33、ble 1 do not apply. Productanalysis is appropriate on these types of steel only whenmisapplication 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 fro
34、m the limits specified by more than3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.A 635/A 635M 092the amounts in Table 1. The several determinations of anyelement in a cast shall not vary both
35、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, from aminimum number of pieces as follows: three
36、 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 test specimensthemselves, or as covered in 6.2.3.3.6.2.3.3 When
37、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 strip. The sampling may be facilitated by folding the sheetboth
38、 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 chipstaken from the steel in the condition in which it is re
39、ceivedfrom 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 overheated during cutting to theextent of causing decarburization.
40、 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 analysis is required andagreed upon to resolve a dispute conc
41、erning 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 and the purchaser.7. Mechanical Properties7.1 The mechanical p
42、roperty 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 must be prepared in accordancewith Test Methods and Definitions
43、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 yield point or yield strength, and to thenearest unit in the r
44、ight 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 applicable limits specified in Tables 2-6 for hot-TABLE 1 Tol
45、erances 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 to 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.
46、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-Strength Low-Alloy Steel)38-in.(Cut Edge) and34-in. (Mill Edge) Minimum Edge Distance (Coils Only)NOTE 1Thic
47、kness 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.NOTE 2Micrometers used for measurement of thickness shall be constructed with anvils and spindles having min
48、imum 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 with pointed tips are not suitable for thickness measurements.NOTE 3The thickness of material 1 in. wide shal
49、l be measured at mid-width.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 UnderBTo 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 0.032 0.036 0.038 0.040AThe specified t
