1、Designation: A 568/A 568M 09Standard Specification forSteel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, General Requirementsfor1This standard is issued under the fixed designationA 568/A 568M; the number immediately following the designation indicates the ye
2、arof 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 Departm
3、ent 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 sheet:
4、 Specifications A 414/A 414M,A 424, A 606, A 659/A 659M, A 794, A 1008/A 1008M,A 1011/A 1011M, and A 1039/A 1039M.1.2 This specification is not applicable to hot-rolled heavy-thickness carbon sheet coils (Specification A 635/A 635M).1.3 In case of any conflict in requirements, the requirementsof the
5、 individual 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 expressi
6、ng the limiting 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 rationalize
7、d values. Conformance 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. Th
8、e 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 applicable material specifica-tions are expressed in both inc
9、h-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 Definitions for Mechanical Testingof Steel ProductsA 414/A 414
10、M Specification for Steel, Sheet, Carbon, forPressure VesselsA 424 Specification for Steel, Sheet, for Porcelain Enamel-ingA 606 Specification for Steel, Sheet and Strip, High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, withImproved Atmospheric Corrosion ResistanceA 635/A 635M Specification for
11、 Steel, Sheet and Strip,Heavy-Thickness Coils, Hot-Rolled, Alloy, Carbon, Struc-tural, High-Strength Low-Alloy, and High-Strength Low-Alloy with Improved Formability, General RequirementsforA 659/A 659M Specification for Commercial Steel (CS),Sheet and Strip, Carbon (0.16 Maximum to 0.25 Maxi-mum Pe
12、rcent), Hot-RolledA 700 Practices for Packaging, Marking, and LoadingMethods for Steel Products for ShipmentA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel ProductsA 794 Specification for Commercial Steel (CS), Sheet,Carbon (0.16 % Maximum to 0.25 % Maximum), Cold-Rolled
13、A 941 Terminology Relating to Steel, Stainless Steel, Re-lated Alloys, and FerroalloysA 1008/A 1008M Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy,1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloy
14、s and is the direct responsibility of SubcommitteeA01.19 on Steel Sheet and Strip.Current edition approved May 1, 2009. Published May 2009. Originallyapproved in 1966. Last previous edition approved in 2007 as A 568/A 568M 07a.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orc
15、ontact 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 section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, W
16、est Conshohocken, PA 19428-2959, United States.High-Strength Low-Alloy with Improved Formability, So-lution Hardened, and Bake HardenableA 1011/A 1011M Specification for Steel, Sheet and Strip,Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy,High-Strength Low-Alloy with Improved Formability,
17、andUltra-High StrengthA 1030/A 1030M Practice for Measuring Flatness Charac-teristics of Steel Sheet ProductsA 1039/A 1039M Specification for Steel, Sheet, HotRolled, Carbon, Commercial and Structural, Produced bythe Twin-Roll Casting ProcessE11 Specification for Wire Cloth and Sieves for TestingPur
18、posesE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE59 Practice for Sampling Steel and Iron for Determina-tion of Chemical Composition3E 290 Test Methods for Bend Testing of Material forDuctility2.2 Military Standards:4MIL-STD-129 Marking for Shipm
19、ent and Storage2.3 Federal Standards:4Fed. Std. No. 123 Marking for Shipments (Civil Agencies)3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 Steel Types:3.1.2 carbon steeldesignation for steel when no minimumcontent is specified or required for aluminum, chromium,cobalt, colu
20、mbium, molybdenum, nickel, titanium, tungsten,vanadium, 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: mangan
21、ese 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-terials are sometimes found which are not specified or required,such as copper, nickel, molybdenum, chromium, etc. Theseelements are considered
22、as incidental and are not normallydetermined or reported.3.1.3 high-strength, low-alloy steelspecific group of steelsin which higher strength, and in some cases additional resis-tance to atmospheric corrosion or improved formability, areobtained by moderate amounts of one or more alloyingelements.3.
23、1.4 Product Types:3.1.5 hot-rolled sheetmanufactured by hot rolling slabs ina continuous mill to the required thickness and can be suppliedin 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
24、 WidthsA0.027 to 0.230, exclAHot-rolled 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
25、coils and cut lengths less than 300 mm. 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.
26、All WidthsA0.031 to 0.230, exclAHot-rolled 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
27、 in coils and cut lengths less than 300 mm in width must havecut edges. Hot-rolled material with mill edges 300 mm and less in width isconsidered hot-rolled strip.NOTE 2The changes in width limits with the publication of A 568/A 568M 06a result in a change in tensile testing direction for materialfr
28、om 0.180 in. 4.5 mm to 0.230 in. exclusive 6.0 mm exclusive over 48in. 1200 mm wide. Material formerly tested in the transverse directionwill be tested in the longitudinal direction. This is expected to result insome changes in reported properties. The purchaser is advised to discussthis change with
29、 the supplier.3.1.6 cold-rolled sheetmanufactured from hot-rolled des-caled coils by cold reducing to the desired thickness, generallyfollowed by annealing to recrystallize the grain structure. If thesheet is not annealed after cold reduction it is known as fullhard with a hardness of 84 HRB minimum
30、 and can be used forcertain applications where ductility and flatness are not re-quired.(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, sl
31、it from wider coils with cut edge (only)and in thicknesses through 0.142 in. 4.0 mm carbon 0.25 % maximum by castanalysis.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
32、.(2) Cold-rolled high-strength low-alloy sheet is commonlyclassified by size as follows: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 coil
33、s with cut edge (only)and in thicknesses 0.019 in. 0.5 mm through 0.082 in. 2.0 mm carbon 0.25 %maximum by cast analysis.3Withdrawn. The last approved version of this historical standard is referencedon www.astm.org.4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700
34、 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.A 568/A 568M 092BWhen 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 ar
35、e available in variousthickness, width, and length combinations 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 processin
36、g capabilities. Toqualify any product for a particular 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 produc
37、t cannot bequalified to that specification. This general 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 rete
38、sts, nadditional test, or tests, made from theoriginal 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
39、on the original sample did not meet the appropriateacceptance 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 directlyco
40、ntrols or is responsible for the melting and refining 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 add
41、itionaloperations such as testing, marking, loading for shipment, andcertification.3.1.10 coil processorthe 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
42、 rolling (cold reduction), heattreating, temper rolling, coating, packaging, marking, loadingfor shipment, and certification.3.1.10.1 DiscussionThe processing operations need notbe controlled by the organization that hot rolls the slab into acoil. If only one organization controls or is responsible
43、for (orboth) the hot rolling and processing operations, that organiza-tion is termed the manufacturer. If more than one organizationcontrols or is responsible for (or both) hot rolling and process-ing operations, the organization that controls and is responsiblefor the hot rolling is termed the hot
44、roll manufacturer and theorganization or organizations 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 orga
45、nization responsible for the conver-sion of the hot 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
46、 hot roll manufacturer, nthe organization that di-rectly 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, inspec-tion, blanking, slitting, pickling, cold rolling, heat treati
47、ng,coating, packaging, marking, loading for shipment, and certi-fication.3.1.12 cold roll manufacturer, nthe organization thatdirectly 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 rol
48、ling, slitting,cutting to length, testing, inspection, blanking, coating, pack-aging, marking, loading for shipment, and certification.3.2 Refer to TerminologyA 941 for additional definitions ofterms used in this standard.4. Materials and Manufacture4.1 Unless otherwise specified, hot-rolled materia
49、l shall befurnished hot-rolled, not annealed, not pickled.4.2 Coil breaks, stretcher strains, and fluting can occurduring the users processing of hot-rolled or hot-rolled pickledsheet. When any of these features are detrimental to theapplication, the manufacturer shall be notified at time ofordering in order to properly process the sheet.4.3 Cold-rolled carbon steel sheet is available as discussedin 10.2, 10.3, and in Table 1.4.4 Unless specified as a full-hard product, cold-rolled sheetis annealed after being cold reduced to thickness. The an-ne
