1、Designation: A568/A568M 11aStandard 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 Departmen
3、t 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: S
4、pecifications 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 mate
5、rial 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 limiting
6、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. Confor
7、mance 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 stated
8、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 an
9、d 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:2A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA414/A414M Specification for
10、 Steel, Sheet, Carbon, andHigh-Strength, Low-Alloy for Pressure VesselsA424 Specification for Steel, Sheet, for Porcelain Enamel-ingA606 Specification for Steel, Sheet and Strip, High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, withImproved Atmospheric Corrosion ResistanceA635/A635M Specificati
11、on for 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 RequirementsforA659/A659M Specification for Commercial Steel (CS),Sheet and Strip, Carbon (0.16 Maximum to 0.25 Maxi-mu
12、m Percent), Hot-RolledA700 Practices for Packaging, Marking, and Loading Meth-ods for Steel Products for ShipmentA751 Test Methods, Practices, and Terminology for Chemi-cal Analysis of Steel ProductsA794 Specification for Commercial Steel (CS), Sheet, Car-bon (0.16 % Maximum to 0.25 % Maximum), Cold
13、-RolledA941 Terminology Relating to Steel, Stainless Steel, Re-lated Alloys, and FerroalloysA1008/A1008M Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy,High-Strength Low-Alloy with Improved Formability, So-lution Hardened, and Bake HardenableA1011/A1011M Spe
14、cification 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 approved May 1, 2011. Published June 2011. Originallya
15、pproved in 1966. Last previous edition approved in 2011 as A568/A568M 11.DOI: 10.1520/A0568_A0568M-11a.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
16、 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.Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy,High-Strength Low-All
17、oy with Improved Formability, andUltra-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 by Twin-Roll Casting ProcessE11 Speci
18、fication for Woven Wire Test Sieve Cloth and TestSievesE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE59 Practice for Sampling Steel and Iron for Determinationof Chemical Composition3E290 Test Methods for Bend Testing of Material for Duc-tility2.2
19、Military Standards:4MIL-STD-129 Marking for Shipment 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 specifie
20、d 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 copper doesnot exceed 0.40 %; or when the maximum content specified forany of the following elem
21、ents 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-terials are sometimes found which are not specified or required,such as copper, nickel, molybde
22、num, chromium, etc. Theseelements are considered 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 mo
23、derate amounts of one or more alloyingelements.3.1.4 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:
24、Coils and Cut LengthsWidth, in. Thickness, in.All 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, m
25、mAll WidthsA0.7 to 6.0, exclAHot-rolled sheet 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.(2) Hot-rolled high-strength low-alloy steel sheet is com-monly classified by size as follo
26、ws:Coils and Cut LengthsWidth, in. Thickness, in.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. Thicknes
27、s, mmAll WidthsA0.8 to 6.0, exclAHot-rolled sheet 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 A568/A568M 06a result in a cha
28、nge 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. Material formerly tested in the transverse directionwill be tested in the longitudinal direction. This is expected to result insome changes in reported properties. The
29、purchaser is advised to discussthis change with 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 know
30、n as fullhard with a hardness of 84 HRB minimum 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
31、4.0ACold-rolled sheet coils and cut lengths, slit 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
32、under 24 in. 600 mm is notspecified or required.(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 sh
33、eet 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 carbon 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 u
34、nder 24 in. 600 mm is notspecified or required.3.1.6.1 DiscussionSteel products are available in variousthickness, width, and length combinations depending upon3Withdrawn. The last approved version of this historical standard is referencedon www.astm.org.4Available from Standardization Documents Ord
35、er Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.A568/A568M 11a2equipment and processing capabilities of various manufactur-ers and processors. Historic limitations of a product based upondimensions (thickness, width, and length) do not tak
36、e intoaccount current production and processing 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 produc
37、tspecification cannot be conducted, the product 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 o
38、rprocessor, whichever is applicable.3.1.7 retests, 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
39、, nadditional test or tests made when thetest 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 m
40、anufacturer, nthe organization that directlycontrols 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 o
41、f the ingots to slabs, and for one or more additionaloperations 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,
42、 inspection,blanking, slitting, pickling, cold 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 onl
43、y one organization controls or is responsible 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 res
44、ponsiblefor the hot rolling is termed the hot 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 manufacture
45、r of the cold rollcoil. In such case, the organization 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 term
46、ed the coil processor or coilprocessors.3.1.11 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,
47、 slitting, pickling, cold rolling, heat treating,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 additionaloper
48、ations such as pickling, annealing, temper rolling, slitting,cutting to length, testing, inspection, blanking, coating, pack-aging, marking, loading for shipment, and certification.3.2 Refer to Terminology A941 for additional definitions ofterms used in this standard.4. Materials and Manufacture4.1
49、Unless otherwise specified, hot-rolled material 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 af
