1、Designation: A 568/A 568M 07Standard 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 (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Depart
3、ment 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 th
5、e 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 express
6、ing 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 rationaliz
7、ed 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 inch-pound units or SI unitsare to be regarded as standard. Within the t
8、ext, the SI units areshown in brackets. The values stated in each system are notexact equivalents; therefore, each system must be used inde-pendently of the other. Combining values from the two systemsmay result in nonconformance with the specification.1.7 This specification and the applicable mater
9、ial 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 Definitions for M
10、echanical Testingof Steel ProductsA 414/A 414M 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 Corro
11、sion ResistanceA 635/A 635M Specification for Steel, Sheet and Strip,Heavy-Thickness Coils, Hot-Rolled, Carbon, Structural,High-Strength Low-Alloy, and High-Strength Low-Alloywith Improved Formability, General Requirements forA 659/A 659M Specification for Commercial Steel (CS),Sheet and Strip, Carb
12、on (0.16 Maximum to 0.25 Maxi-mum Percent), 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 % Max
13、imum to 0.25 % Maximum), Cold-RolledA 941 Terminology Relating to Steel, Stainless Steel, Re-lated Alloys, and Ferroalloys1This 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 Sh
14、eet and Strip.Current edition approved Sept. 1, 2007. Published September 2007. Originallyapproved in 1966. Last previous edition approved in 2006 as A 568/A 568M 06a.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual
15、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, West Conshohocken, PA 19428-2959, United States.A 1008/A 1008
16、M Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy,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-St
17、rength Low-Alloy with Improved Formability, 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 Specificat
18、ion for Wire Cloth and Sieves for TestingPurposesE29 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 Milit
19、ary Standards:4MIL-STD-129 Marking for Shipment and Storage2.3 Federal Standards:4Fed. Std. No. 123 Marking for Shipments (Civil Agencies)Fed. Std. No. 183 Continuous Identification Marking of Ironand Steel Products3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 Steel Types:3.
20、1.2 carbon steeldesignation for steel when no minimumcontent 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 copper doesnot exceed 0.
21、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-terials are sometimes f
22、ound 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 steelspecific group of steelsin which higher strength, and in some cases additional resis-t
23、ance to atmospheric corrosion or improved formability, areobtained by moderate 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)
24、 Hot-rolled carbon and high-strength low-alloy (HSLA)steel sheet is commonly classified by size as follows:Coils and Cut LengthsWidth, in. Thickness, in.Over 12 0.031 to 0.230, exclCoils and Cut LengthsWidth, mm Thickness, mmOver 300 0.7 to 6.0, exclNOTE 2The changes in width limits with the publica
25、tion of A 568/A 568M 06a 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. Material formerly tested in the transverse directionwill be tested in the longitudinal direction. This is expected to result ins
26、ome changes in reported properties. The 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
27、annealed after cold reduction it is known 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.Through 12AThrough 0.082Over 1
28、2Bthrough 23 15/16 Through 0.142Over 23 15/16 Through 0.142Width, mm Thickness, mmTo 300, inclAThrough 2.0Over 300BThrough 4.0ACold-rolled sheet coils and cut lengths, slit from wider coils with cut edge (only)and in thicknesses through 0.082 in. 2.0 mm carbon 0.25 % maximum by castanalysis.BWhen no
29、 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:Width, in. Thickness, in.Through 12A0.019
30、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 0.82 in. 2.0 mm carbon 0.25 %maximum by cast analysis.BWhen no s
31、pecial 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 combinations depending uponequipment and proc
32、essing 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 particular product specificationrequires all appropr
33、iate 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 be3Withdrawn.4Available from Standardization Documents Order Desk, Bldg. 4 Section D, 7
34、00Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.A 568/A 568M 072qualified 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 th
35、e manufacturer orprocessor, 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 1
36、1.3.1.8 resample, 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 sampl
37、es.3.1.9 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 slabs either through continuous casting, conventionalor compact methods, or ingot casting and subseque
38、nt conver-sion of 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
39、length, testing, 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 in
40、to acoil. If only 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 con
41、trols and is responsiblefor 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
42、 the manufacturer 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 c
43、oil will be termed 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
44、-tion, blanking, 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 mor
45、e additionaloperations 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 TerminologyA 941 for additional definitions ofterms used in this standard.4. Materials and
46、 Manufacture4.1 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 theappl
47、ication, 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 thickn
48、ess. The an-nealed, cold-rolled sheet can be used as annealed last (deadsoft) for unexposed end-use applications. When cold-rolledsheet is used for unexposed applications and coil breaks are ahazard in uncoiling, it may be necessary to further process thematerial. In this case the manufacturer shoul
49、d be consulted.After annealing, cold-rolled sheet is generally given a lightskin pass to impart shape or may be given a heavier skin passor temper pass to prevent the phenomenon known as stretcherstraining or fluting, when formed. Temper passing also pro-vides a required surface texture.4.5 Temper Rolling:4.5.1 Unless otherwise specified, cold-rolled sheet for ex-posed applications shall be temper rolled and is usuallyspecified and furnished in the strain free condition as shipped.SeeAppendix X1, Effect ofAging of Cold-Rolled Carbon SteelSheet on D
