Standard Specification for Steel, Sheet, Carbon, …

1 Designation: A568/A568M 09 Standard Specification forSteel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, General Requirementsfor1 This Standard is issued under the fixed designation A568/A568M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last superscript epsilon ( ) indicates an editorial change since the last revision or Standard has been approved for use by agencies of the Department of Scope* 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: SpecificationsA414/A414M,A424,A606,A659/ A659M,A794,A1008/A1008M,A1011/A1011M, andA1039 This specification is not applicable to hot-rolled heavy-thickness carbon sheet coils (SpecificationA635/A635M).

2 In case of any conflict in requirements, the requirementsof the individual material specification shall prevail over thoseof this general For the purposes of determining conformance with thisand the appropriate product specification referenced ,values shall be rounded to the nearest unit in the right handplace of figures used in expressing the limiting values inaccordance with the rounding method of A1lists permissible variations in dimensions andmass (seeNote 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. Conformance toAnnex A1is mandatory when the M specification is The termweightis used when inch-pound units are thestandard. However, under SI the preferred term The values stated in either SI units or inch-pound unitsare to be regarded separately as Standard .

3 The 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 This specification and the applicable material specifica-tions are expressed in both inch-pound units and SI , unless the order specifies the applicable M speci-fication designation (SI units), the material shall be furnishedto inch-pound Referenced standards :2A370 Test Methods and Definitions for Mechanical Testingof steel ProductsA414/A414 MSpecification for steel , Sheet, Carbon, forPressure 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/A635 MSpecification 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/A659 MSpecification for Commercial steel (CS),Sheet and Strip, Carbon ( Maximum to Maxi-mum Percent)

4 , 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 ( % Maximum to % Maximum), Cold-RolledA941 Terminology Relating to steel , Stainless steel , Re-lated alloys , and FerroalloysA1008/A1008 MSpecification for steel , Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy,High-Strength Low-Alloy with Improved Formability, So-lution Hardened, and Bake HardenableA1011/A1011 MSpecification for steel , Sheet and Strip,1 This specification is under the jurisdiction of ASTM CommitteeA01on Steel, Stainless steel and Related alloys and is the direct responsibility of steel Sheet and edition approved May 1, 2009.

5 Published May 2009. Originallyapproved in 1966. Last previous edition approved in 2007 as A568/A568M : referenced ASTM standards , visit the ASTM website, , orcontact ASTM Customer Service at ForAnnual Book of ASTMS tandardsvolume information, refer to the Standard s Document Summary page onthe ASTM *A Summary of Changes section appears at the end of this ASTM International, 100 Barr Harbor Dr. PO box C-700 West Conshohocken, Pennsylvania 19428-2959, United StatesCopyright by ASTM Int'l (all rights reserved); Sun Nov 29 21:45:21 EST 2009 Downloaded/printed byUniversity of Ottawa pursuant to License Agreement. No further reproductions , Carbon, Structural, High-Strength Low-Alloy,High-Strength Low-Alloy with Improved Formability, andUltra-High StrengthA1030/A1030 MPractice for Measuring Flatness Character-istics of steel Sheet ProductsA1039/A1039 MSpecification for steel , Sheet, Hot Rolled,Carbon, Commercial, Structural, and High-Strength Low-Alloy, Produced by Twin-Roll Casting ProcessE11 Specification 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 standards :4 MIL-STD-129 Marking for Shipment and standards :4 Fed.

6 Std. No. 123 Marking for Shipments (Civil Agencies)3. of Terms Specific to This steel designation 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 %; or when the maximum content specified forany of the following elements does not exceed the percentagesnoted: manganese , silicon , or copper In 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 as incidental and are not normallydetermined or , low-alloy steel specific 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 sheet manufactured by hot rolling slabs ina continuous mill to the required thickness and can be suppliedin coils or cut lengths as specified.

7 (1)Hot-rolled carbon steel sheet is commonly classified bysize as follows:Coils and Cut LengthsWidth, , to , 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 and Cut LengthsWidth, mmThickness, mmAll to , 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 follows:Coils and Cut LengthsWidth, , to , 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.

8 And less in width is consideredhot-rolled and Cut LengthsWidth, , mmAll to , 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 The changes in width limits with the publication of A568/A568M 06a result in a change in tensile testing direction for materialfrom in. [ mm] to in. exclusive [ 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 the sheet manufactured from hot-rolled des-caled coils by cold reducing to the desired thickness, generallyfollowed by annealing to recrystallize the grain structure.

9 If thesheet is not 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, , WidthsA,BThrough , mmThickness, mmAll WidthsA,BThrough sheet coils and cut lengths, slit from wider coils with cut edge (only)and in thicknesses through in. [ mm] carbon % maximum by 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:Width, , through and overWidth, mmThickness, mmTo 300, inclAOver to , and OverACold-rolled sheet coils and cut lengths, slit from wider coils with cut edge (only)and in thicknesses in.

10 [ mm] through in. [ mm] carbon %maximum by cast 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 steel products are available in variousthickness, width, and length combinations depending upon3 Withdrawn. The last approved version of this historical Standard is referencedon from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, 092 Copyright by ASTM Int'l (all rights reserved); Sun Nov 29 21:45:21 EST 2009 Downloaded/printed byUniversity of Ottawa pursuant to License Agreement. No further reproductions 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.