1、Designation: A568/A568M 15A568/A568M 17Standard 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 indica
2、tes 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 reapproval.This standard has been approved for use by agencies of t
3、he U.S. Department of Defense.1. Scope*1.1 This specification covers the general requirements for steel sheet in coils and cut lengths. It applies to the followingspecifications that describe carbon steel, structural steel, and high-strength, low-alloy steel (HSLA) furnished as hot-rolled sheetand c
4、old-rolled sheet: Specifications A414/A414M, A424, A606, A659/A659M, A794, A1008/A1008M, A1011/A1011M, andA1039/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 requirements of
5、 the individual material specification shall prevail over those ofthis general specification.1.4 For the purposes of determining conformance with this and the appropriate product specification referenced in 1.1, valuesshall be rounded to the nearest unit in the right hand place of figures used in ex
6、pressing the limiting values in accordance withthe rounding method of Practice E29.1.5 Annex A1 lists permissible variations in dimensions and mass (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 ra
7、tionalized values. Conformance toAnnex A1 is mandatory when the “M” specification is used.NOTE 1The term weight is used when inch-pound units are the standard. However, under SI the preferred term is mass.1.6 The values stated in either SI units or inch-pound units are to be regarded separately as s
8、tandard. The values stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.1.7 This specification and the applicable material specifications are expressed
9、 in both inch-pound units and SI units. However,unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished to inch-poundunits.1.8 This international standard was developed in accordance with internationally recognized principles on standardiza
10、tionestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A370 Test Methods and Definitions for Mechanical Testi
11、ng of Steel ProductsA414/A414M Specification for Steel, Sheet, Carbon, and High-Strength, Low-Alloy for Pressure VesselsA424 Specification for Steel, Sheet, for Porcelain Enameling1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is t
12、he direct responsibility of Subcommittee A01.19on Steel Sheet and Strip.Current edition approved Nov. 1, 2015Sept. 1, 2017. Published November 2015September 2017. Originally approved in 1966. Last previous edition approved in 20142015as A568/A568M 14.A568/A568M 15. DOI: 10.1520/A0568_A0568M-15.10.15
13、20/A0568_A0568M-17.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and
14、is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only th
15、e current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1A606 Specification for St
16、eel, Sheet and Strip, High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, with ImprovedAtmospheric Corrosion ResistanceA635/A635M Specification for Steel, Sheet and Strip, Heavy-Thickness Coils, Hot-Rolled, Alloy, Carbon, Structural,High-Strength Low-Alloy, and High-Strength Low-Alloy with Improve
17、d Formability, General Requirements forA659/A659M Specification for Commercial Steel (CS), Sheet and Strip, Carbon (0.16 Maximum to 0.25 Maximum Percent),Hot-RolledA700 Guide for Packaging, Marking, and Loading Methods for Steel Products for ShipmentA751 Test Methods, Practices, and Terminology for
18、Chemical Analysis of Steel ProductsA794 Specification for Commercial Steel (CS), Sheet, Carbon (0.16 % Maximum to 0.25 % Maximum), Cold-RolledA941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and FerroalloysA1008/A1008M Specification for Steel, Sheet, Cold-Rolled, Carbon, Structur
19、al, High-Strength Low-Alloy, High-StrengthLow-Alloy with Improved Formability, Solution Hardened, and Bake HardenableA1011/A1011M Specification for Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Stren
20、gthA1030/A1030M Practice for Measuring Flatness Characteristics of Steel Sheet ProductsA1039/A1039M Specification for Steel, Sheet, Hot Rolled, Carbon, Commercial, Structural, and High-Strength Low-Alloy,Produced by Twin-Roll Casting ProcessA1073/A1073M Practice for Using Hand Micrometers to Measure
21、 the Thickness of Uncoated Steel Sheet and Nonmetallic andMetallic-Coated Steel SheetE11 Specification for Woven Wire Test Sieve Cloth and Test SievesE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE59 Practice for Sampling Steel and Iron for Determ
22、ination of Chemical Composition (Withdrawn 1996)3E290 Test Methods for Bend Testing of Material for Ductility2.2 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 Speci
23、fic to This Standard:3.1.1 Steel Types:3.1.2 carbon steel, ndesignation for steel when no minimum content is specified or required for aluminum, chromium, cobalt,columbium, molybdenum, nickel, titanium, tungsten, vanadium, zirconium, or any element added to obtain a desired alloyingeffect; when the
24、specified minimum for copper does not exceed 0.40 %; or when the maximum content specified for any of thefollowing elements does not exceed the percentages noted: manganese 1.65, silicon 0.60, or copper 0.60.3.1.2.1 DiscussionIn all carbon steels small quantities of certain residual elements unavoid
25、ably retained from raw materials are sometimes foundwhich are not specified or required, such as copper, nickel, molybdenum, chromium, and so forth. These elements are consideredas incidental and are not normally determined or reported.3.1.3 high-strength, low-alloy steel, nspecific group of steels
26、in which higher strength, and in some cases additional resistanceto atmospheric corrosion or improved formability, are obtained by moderate amounts of one or more alloying elements.3.1.4 Product Types:3.1.5 hot-rolled sheet, nmanufactured by hot rolling slabs in a continuous mill to the required thi
27、ckness and can be suppliedin coils or cut lengths as specified.(1) Hot-rolled carbon steel sheet is commonly classified by size as follows:Coils and Cut LengthsWidth, in. Thickness, in.All WidthsA 0.027 to 0.230, exclA Hot-rolled sheet in coils and cut lengths less than 12 in. in width must have cut
28、 edges. Hot-rolled material with mill edges 12 in. and less in width is considered hot-rolledstrip.3 The last approved version of this historical standard is referenced on www.astm.org.4 Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia,
29、PA 19111-5098, http:/www.dodssp.daps.mil.A568/A568M 172Coils and Cut LengthsWidth, mm Thickness, mmAll WidthsA 0.7 to 6.0, exclA Hot-rolled sheet in coils and cut lengths less than 300 mm. in width must have cut edges. Hot-rolled material with mill edges 300 mm and less in width is consideredhot-rol
30、led strip.(2) Hot-rolled high-strength low-alloy steel sheet is commonly classified by size as follows:Coils and Cut LengthsWidth, in. Thickness, in.All WidthsA 0.031 to 0.230, exclA Hot-rolled sheet in coils and cut lengths less than 12 in. in width must have cut edges. Hot-rolled material with mil
31、l edges 12 in. and less in width is considered hot-rolledstrip.Coils and Cut LengthsWidth, in. Thickness, mmAll WidthsA 0.8 to 6.0, exclA Hot-rolled sheet in coils and cut lengths less than 300 mm in width must have cut edges. Hot-rolled material with mill edges 300 mm and less in width is considere
32、dhot-rolled strip.NOTE 2The changes in width limits with the publication of A568/A568M 06a result in a change in tensile testing direction for material from 0.180in. 4.5 mm to 0.230 in. exclusive 6.0 mm exclusive over 48 in. 1200 mm wide. Material formerly tested in the transverse direction will be
33、testedin the longitudinal direction. This is expected to result in some changes in reported properties. The purchaser is advised to discuss this change with thesupplier.3.1.6 cold-rolled sheet, nmanufactured from hot-rolled descaled coils by cold reducing to the desired thickness, generallyfollowed
34、by annealing to recrystallize the grain structure. If the sheet is not annealed after cold reduction it is known as full hardwith a hardness of 84 HRB minimum and can be used for certain applications where ductility and flatness are not required.(1) Cold-rolled carbon sheet is commonly classified by
35、 size as follows:Width, in. Thickness, in.All WidthsA,B Through 0.142Width, mm Thickness, mmAll WidthsA,B Through 4.0A Cold-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 cast analysis.B When no spec
36、ial edge or finish (other than matte, commercial bright, or luster finish) or single strand rolling of widths, or both under 24 in. 600 mm is not specified orrequired.(2) Cold-rolled high-strength low-alloy sheet is commonly classified by size as follows:Width, in. Thickness, in.Through 12 A 0.019 t
37、hrough 0.082Over 12 B 0.020 and overWidth, mm Thickness, mmTo 300, inclAOver 300B0.5 to 2.0, incl0.5 and OverA Cold-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 carbon 0.25 % maximumby cast analysis.B When
38、 no special edge or finish (other than matte, commercial bright, or luster finish) or single strand rolling of widths, or both under 24 in. 600 mm is not specified orrequired.3.1.6.1 DiscussionSteel products are available in various thickness, width, and length combinations depending upon equipment
39、and processingcapabilities of various manufacturers and processors. Historic limitations of a product based upon dimensions (thickness, width,and length) do not take into account current production and processing capabilities. To qualify any product for a particular productspecification requires all
40、 appropriate and necessary tests be performed and that the results meet the limits prescribed in that productspecification. If the necessary tests required by a product specification cannot be conducted, the product cannot be qualified to thatspecification. This general requirements specification co
41、ntains permitted variations for the commonly available sizes. Permittedvariations for other sizes are subject to agreement between the customer and the manufacturer or processor, whichever isapplicable.3.1.7 retests, nadditional test, or tests, made from the original material when the original test
42、did not meet the appropriateacceptance criteria required by a product specification and the failure was mechanical in natures as described in Section 11.A568/A568M 1733.1.8 resample, nadditional test or tests made when the test on the original sample did not meet the appropriate acceptancecriteria r
43、equired by the product specification, but possibly requiring that the material in question have an appropriate amountdiscarded prior to securing the new sample or samples.3.1.9 steel manufacturer, nthe organization that directly controls or is responsible for the melting and refining of steel and th
44、econversion of that steel into semifinished steel products known as slabs either through continuous casting, conventional or compactmethods, or ingot casting and subsequent conversion of the ingots to slabs, and for one or more additional operations such astesting, marking, loading for shipment, and
45、 certification.3.1.10 coil processor, nthe organization that directly controls or is responsible for operations involved in processing the coilsuch as leveling, cutting to length, testing, inspection, blanking, slitting, pickling, cold rolling (cold reduction), heat treating,temper rolling, coating,
46、 packaging, marking, loading for shipment, and certification.3.1.10.1 DiscussionThe processing operations need not be controlled by the organization that hot rolls the slab into a coil. If only one organizationcontrols or is responsible for (or both) the hot rolling and processing operations, that o
47、rganization is termed the manufacturer. Ifmore than one organization controls or is responsible for (or both) hot rolling and processing operations, the organization thatcontrols and is responsible for the hot rolling is termed the hot roll manufacturer and the organization or organizations controll
48、ingand responsible for the processing operations is/are termed the processor or processors. Likewise, one organization may be themanufacturer of the hot roll coil and another the manufacturer of the cold roll coil. In such case, the organization responsible forthe conversion of the hot roll coil to
49、a cold roll coil and other processing operations will also be termed the cold roll manufacturerand organizations performing additional processing operations to the cold roll coil will be termed the coil processor or coilprocessors.3.1.11 hot roll manufacturer, nthe organization that directly controls or is responsible for the conversion of steel slabs, by hotrolling into coils, and for one or more additional operations such as leveling, cutting to length, testing, inspection, blanking, slitting,pickling, cold rolling, heat treating, coating,
