1、Designation: A568/A568M 17aStandard Specification forSteel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, General Requirementsfor1This standard is issued under the fixed designation A568/A568M; the number immediately following the designation indicates the year
2、of 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 reapproval.This standard has been approved for use by agencies of the U.S. Depa
3、rtment of Defense.1. Scope*1.1 This specification covers the general requirements forsteel sheet in coils and cut lengths. It applies to the followingspecifications that describe carbon steel, structural steel, andhigh-strength, low-alloy steel (HSLA) furnished as hot-rolledsheet and cold-rolled she
4、et: Specifications A414/A414M,A424, A606, A659/A659M, A794, A1008/A1008M, A1011/A1011M, and A1039/A1039M.1.2 This specification is not applicable to hot-rolled heavy-thickness carbon sheet coils (Specification A635/A635M).1.3 In case of any conflict in requirements, the requirementsof the individual
5、 material specification shall prevail over thoseof this general specification.1.4 For the purposes of determining conformance with thisand the appropriate product specification referenced in 1.1,values shall be rounded to the nearest unit in the right handplace of figures used in expressing the limi
6、ting values inaccordance with the rounding method of Practice E29.1.5 AnnexA1 lists permissible variations in dimensions andmass (see Note 1) 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. C
7、onformance toAnnex A1 is mandatory when the “M” specification is used.NOTE 1The 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 st
8、ated 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 uni
9、ts and SI units.However, unless the order specifies the applicable “M” speci-fication designation (SI units), the material shall be furnishedto inch-pound units.1.8 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in
10、the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A370 Test Methods and Definitions for Mechanical Testingof Steel Products
11、A414/A414M Specification for Steel, Sheet, Carbon, andHigh-Strength, Low-Alloy for Pressure VesselsA424 Specification for Steel, Sheet, for Porcelain EnamelingA606 Specification for Steel, Sheet and Strip, High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, withImproved Atmospheric Corrosion Resis
12、tanceA635/A635M Specification for Steel, Sheet and Strip,Heavy-Thickness Coils, Hot-Rolled, Alloy, Carbon,Structural, High-Strength Low-Alloy, and High-StrengthLow-Alloy with Improved Formability, General Require-ments forA659/A659M Specification for Commercial Steel (CS),Sheet and Strip, Carbon (0.
13、16 Maximum to 0.25 Maxi-mum Percent), Hot-RolledA700 Guide for Packaging, Marking, and Loading Methodsfor Steel Products for ShipmentA751 Test Methods, Practices, and Terminology for Chemi-cal Analysis of Steel Products1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stai
14、nless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.19 on Steel Sheet and Strip.Current edition approved Nov. 1, 2017. Published November 2017. Originallyapproved in 1966. Last previous edition approved in 2017 as A568/A568M 17.DOI: 10.1520/A0568_A0568M-17A2For referen
15、ced 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.*A Summary of Changes section appears at the end of this standardCopyrigh
16、t ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International
17、 Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1A794 Specification for Commercial Steel (CS), Sheet, Car-bon (0.16 % Maximum to 0.25 % Maximum), Cold-RolledA941 Terminology Relating to Steel, Stainless Steel, RelatedAlloys, a
18、nd FerroalloysA1008/A1008M Specification for Steel, Sheet, Cold-Rolled,Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, SolutionHardened, and Bake HardenableA1011/A1011M Specification for Steel, Sheet and Strip,Hot-Rolled, Carbon, Structural, High-Stren
19、gth Low-Alloy, High-Strength Low-Alloy with ImprovedFormability, and Ultra-High StrengthA1030/A1030M Practice for Measuring Flatness Character-istics of Steel Sheet ProductsA1039/A1039M Specification for Steel, Sheet, Hot Rolled,Carbon, Commercial, Structural, and High-Strength Low-Alloy, Produced b
20、y Twin-Roll Casting ProcessA1073/A1073M Practice for Using Hand Micrometers toMeasure the Thickness of Uncoated Steel Sheet andNonmetallic and Metallic-Coated Steel SheetE11 Specification for Woven Wire Test Sieve Cloth and TestSievesE29 Practice for Using Significant Digits in Test Data toDetermine
21、 Conformance with SpecificationsE59 Practice for Sampling Steel and Iron for Determinationof Chemical Composition (Withdrawn 1996)3E290 Test Methods for Bend Testing of Material for Ductil-ity2.2 Military Standards:4MIL-STD-129 Marking for Shipment and Storage2.3 Federal Standards:4Fed. Std. No. 123
22、 Marking for Shipments (Civil Agencies)3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 Steel Types:3.1.2 carbon steel, ndesignation for steel when no mini-mum content is specified or required for aluminum, chromium,cobalt, columbium, molybdenum, nickel, titanium, tungsten,vana
23、dium, zirconium, or any element added to 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 Dis
24、cussionIn all carbon steels small quantities ofcertain residual elements unavoidably retained from raw ma-terials are sometimes found which are not specified or required,such as copper, nickel, molybdenum, chromium, and so forth.These elements are considered as incidental and are notnormally determi
25、ned or reported.3.1.3 high-strength, low-alloy steel, nspecific 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.3.1.4 Product Types:3.1.5 hot-rolled sheet
26、, nmanufactured by hot-rolling slabsin a continuous mill to the required thickness and can besupplied in coils or cut lengths as specified.(1) Hot-rolled carbon steel sheet is commonly classified bysize as follows:Coils and Cut LengthsWidth, in. Thickness, in.All WidthsA0.027 to 0.230, exclAHot-roll
27、ed sheet in coils and cut lengths less than 12 in. in width must have cutedges. Hot-rolled material with mill edges 12 in. and less in width is consideredhot-rolled strip.Coils and Cut LengthsWidth, mm Thickness, mmAll WidthsA0.7 to 6.0, exclAHot-rolled sheet in coils and cut lengths less than 300 m
28、m. in width must havecut edges. Hot-rolled material with mill edges 300 mm and less in width isconsidered hot-rolled strip.(2) Hot-rolled high-strength low-alloy steel sheet is com-monly classified by size as follows:Coils and Cut LengthsWidth, in. Thickness, in.All WidthsA0.031 to 0.230, exclAHot-r
29、olled sheet in coils and cut lengths less than 12 in. in width must have cutedges. Hot-rolled material with mill edges 12 in. and less in width is consideredhot-rolled strip.Coils and Cut LengthsWidth, in. Thickness, mmAll WidthsA0.8 to 6.0, exclAHot-rolled sheet in coils and cut lengths less than 3
30、00 mm in width must have cutedges. Hot-rolled material with mill edges 300 mm and less in width is consideredhot-rolled strip.NOTE 2The changes in width limits with the publication of A568/A568M 06a result in a change in tensile testing direction for materialfrom 0.180 in. 4.5 mm to 0.230 in. exclus
31、ive 6.0 mm exclusive over48 in. 1200 mm wide. Material formerly tested in the transversedirection will be tested in the longitudinal direction. This is expected toresult in some changes in reported properties. The purchaser is advised todiscuss this change with the supplier.3.1.6 cold-rolled sheet,
32、nmanufactured from hot-rolleddescaled coils by cold reducing to the desired thickness,generally followed by annealing to recrystallize the grainstructure. If the sheet is not annealed after cold reduction it isknown as full hard with a hardness of 84 HRB minimum andcan be used for certain applicatio
33、ns where ductility and flatnessare not required.(1) Cold-rolled carbon sheet is commonly classified by sizeas follows:Width, in. Thickness, in.All WidthsA,BThrough 0.142Width, mm Thickness, mmAll WidthsA,BThrough 4.0ACold-rolled sheet coils and cut lengths, slit from wider coils with cut edge (only)
34、and in thicknesses through 0.142 in. 4.0 mm carbon 0.25 % maximum by castanalysis.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/
35、www.dodssp.daps.mil.A568/A568M 17a2BWhen no special edge or finish (other than matte, commercial bright, or lusterfinish) or single strand rolling of widths, or both under 24 in. 600 mm is notspecified or required.(2) Cold-rolled high-strength low-alloy sheet is commonlyclassified by size as follows
36、:Width, in. Thickness, in.Through 12A0.019 through 0.082Over 12B0.020 and overWidth, mm Thickness, mmTo 300, inclAOver 300B0.5 to 2.0, incl0.5 and OverACold-rolled sheet coils and cut lengths, slit from wider coils with cut edge (only)and in thicknesses 0.019 in. 0.5 mm through 0.082 in. 2.0 mm carb
37、on 0.25 %maximum by cast analysis.BWhen no special edge or finish (other than matte, commercial bright, or lusterfinish) or single strand rolling of widths, or both under 24 in. 600 mm is notspecified or required.3.1.6.1 DiscussionSteel products are available in variousthickness, width, and length c
38、ombinations depending uponequipment and processing capabilities of various manufactur-ers and processors. Historic limitations of a product based upondimensions (thickness, width, and length) do not take intoaccount current production and processing capabilities. Toqualify any product for a particul
39、ar product specificationrequires all appropriate and necessary tests be performed andthat the results meet the limits prescribed in that productspecification. If the necessary tests required by a productspecification cannot be conducted, the product cannot bequalified to that specification. This gen
40、eral requirements speci-fication contains permitted variations for the commonly avail-able sizes. Permitted variations for other sizes are subject toagreement between the customer and the manufacturer orprocessor, whichever is applicable.3.1.7 retests, nadditional test, or tests, made from theorigin
41、al material when the original test did not meet theappropriate acceptance criteria required by a product specifi-cation and the failure was mechanical in natures as described inSection 11.3.1.8 resample, nadditional test or tests made when thetest on the original sample did not meet the appropriatea
42、cceptance criteria required by the product specification, butpossibly requiring that the material in question have anappropriate amount discarded prior to securing the new sampleor samples.3.1.9 steel manufacturer, nthe organization that directlycontrols or is responsible for the melting and refinin
43、g of steeland the conversion of that steel into semifinished steel productsknown as slabs either through continuous casting, conventionalor compact methods, or ingot casting and subsequent conver-sion of the ingots to slabs, and for one or more additionaloperations such as testing, marking, loading
44、for shipment, andcertification.3.1.10 coil processor, nthe organization that directly con-trols or is responsible for operations involved in processing thecoil such as leveling, cutting to length, testing, inspection,blanking, slitting, pickling, cold rolling (cold reduction), heattreating, temper r
45、olling, coating, packaging, marking, loadingfor shipment, and certification.3.1.10.1 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 for (or both)the hot-rolling and processing opera
46、tions, that organization istermed the manufacturer. If more than one organization con-trols or is responsible for (or both) hot-rolling and processingoperations, the organization that controls and is responsible forthe hot-rolling is termed the hot roll manufacturer and theorganization or organizati
47、ons controlling and responsible forthe processing operations is/are termed the processor or pro-cessors. Likewise, one organization may be the manufacturerof the hot roll coil and another the manufacturer of the cold rollcoil. In such case, the organization responsible for the conver-sion of the hot
48、 roll coil to a cold roll coil and other processingoperations will also be termed the cold roll manufacturer andorganizations performing additional processing operations tothe cold roll coil will be termed the coil processor or coilprocessors.3.1.11 hot roll manufacturer, nthe organization that di-r
49、ectly controls or is responsible for the conversion of steelslabs, by hot-rolling into coils, and for one or more additionaloperations such as leveling, cutting to length, testing,inspection, blanking, slitting, pickling, cold rolling, heattreating, coating, packaging, marking, loading for shipment,and certification.3.1.12 cold roll manufacturer, nthe organization that di-rectly controls or is responsible for the conversion of hot rollcoils into cold roll coils, and for one or more additionaloperations such as pickling, annealing, temper rolling,
