ASTM_A_620_-_A_620M_-_97.pdf

Designation:A 620/A620M 97Standard Specification forDrawing Steel(DS),Sheet,Carbon,Cold-Rolled1This standard is issued under the fixed designation A 620/A620M;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 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 Department of Defense.1.Scope1.1 This specification covers cold-rolled carbon drawingsteel(DS)sheet in coils or cut lengths.This material isintended for fabricating identified parts where particularlysevere drawing or forming may be involved or essentialfreedom from aging is required.1.2 This specification is applicable for orders in eitherinch-pound units(as A 620)or SI units(as A 620M).2.Referenced Documents2.1 ASTM Standards:A 568/A 568MSpecification for Steel,Sheet,Carbon,andHigh-Strength,Low-Alloy,Hot-Rolled and Cold-Rolled,General Requirements for2A 619/A 619MSpecification for Non-Killed,FormingSteel(NKFS)Sheet,Carbon,Cold-Rolled23.Terminology3.1 Definitions:3.1.1 agingloss of ductility with an increase in hardness,yield point,and tensile strength that occur when steel,whichhas been slightly cold worked(such as by temper rolling),isstored for some time.Aging also increases the tendency towardstretcher strains and fluting.3.1.2 drawing steel(DS)sheet manufactured from spe-cially produced or selected killed steels(normally aluminumkilled)specially processed to have good uniform drawingproperties for use in fabricating an identified part havingextremely severe deformations and to be essentially free fromaging.4.Classification4.1 Cold-rolled sheet is supplied for either exposed orunexposed applications.Within the latter category,cold-rolledsheet is specified either“temper rolled”or“annealed last.”Fordetails on processing,attributes and limitations,and inspectionstandards,refer to Specifications A 568/A 568M.5.Ordering Information5.1 It is the purchasers responsibility to specify in thepurchase order all ordering information necessary to purchasethe needed material.Examples of such information include butare not limited to the following:5.1.1 ASTM specification number and year of issue,5.1.2 Name of material(cold-rolled drawing steel(DS)sheet),5.1.3 Type-When a type is not specified,Type B will befurnished,5.1.4 Classification(either exposed,unexposed,temperrolled,or annealed last)(see 4.1),5.1.5 Finish(matte finish will be supplied on exposed,unless otherwise specified,and on unexposed)(see 10.1),5.1.6 Oiling(material will be oiled unless ordered not oiled)(see 10.2),5.1.7 Dimensions(thickness,width,and whether cut lengthsor coils),5.1.7.1 As agreed upon between the purchaser and theproducer,material ordered to this specification will be suppliedto meet the appropriate standard or restricted thickness toler-ance table shown in Specification A 568/A 568M.NOTE1Not all producers are capable of meeting all of the limitationsof the thickness tolerance tables in Specification A 568/A 568M.Thepurchaser should contact the producer regarding possible limitations priorto placing an order.5.1.8 Coil size(must include inside diameter,outside diam-eter,and maximum mass),5.1.9 Quantity,5.1.10 Application(show part identification and descrip-tion),5.1.11 Special requirements(if required),and5.1.12 Cast or heat analysis report(request,if required).NOTE2A typical ordering description is as follows:“ASTM A 620-XX or A 620M-XX,Cold-Rolled Drawing Steel(DS)Sheet.Type B,exposed,oiled,0.035 by 53 in.or 0.8 by 1340 mmStandard Thickness Tolerances,by coil ID 24 in.,OD 48 in.,max,weight1This specification is under the jurisdiction of ASTM Committee A-1 on Steel,Stainless Steel and Related Alloys,and is the direct responsibility of SubcommitteeA01.19 on Steel Sheet and Strip.Current edition approved June 10,1997.Published November 1997.Originallypublished as A 620 68.Last previous edition A 620/A 620M 96.2Annual Book of ASTM Standards,Vol 01.03.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.NOTICE:This standard has either been superseded and replaced by a new version or withdrawn.Contact ASTMInternational(www.astm.org)for the latest information.15 000 lb.max or coil ID 6000 mm,OD 1200 mm,max,weight 10 000kg,max 100 000 lb or 45 000 kg,for instrument panel6.General Requirements6.1 Material furnished under this specification shall con-form to the applicable requirements of the current edition ofSpecifications A 568/A 568M unless otherwise providedherein.7.Manufacture7.1 Melting PracticeThe sheet shall be produced fromspecial killed steel.It is normally produced from aluminumkilled steel but may be otherwise deoxidized provided thematerial is capable of meeting the specified requirements.8.Chemical Composition8.1 The cast or heat analysis of the steel shall conform to