ASTM_B_479_-_06.pdf

Designation:B 479 06Standard Specification forAnnealed Aluminum and Aluminum-Alloy Foil for FlexibleBarrier,Food Contact,and Other Applications1This standard is issued under the fixed designation B 479;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers annealed aluminum andaluminum-alloy foil containing 98.00%minimum aluminumand in thicknesses 0.00025 in.(0.0064 mm)to,but notincluding,0.006 in.(0.15 mm).Alloys(see Note 1)covered bythis specification include,but are not limited to 1100,1145,1235,8011,8079,and 8111,which conform to the require-ments of 6.1 and Table 1.Unless otherwise specified by thepurchaser,the alloy to be supplied shall be left to the discretionof the producer.1.2 The foil is for use in packaging,which includes foodhandling and processing applications,requiring flexible barriermaterials,and other general applications.The foil may be usedas supplied or laminated to other materials,such as paper orplastic films.1.3 For acceptance criteria for inclusion of new aluminumand aluminum alloys in this specification,see Annex A1.1.4 The values stated in inch-pound units are to be regardedas the standard.The SI values in parentheses are for informa-tion only.1.5 The following precautionary caveat pertains only to thetest method portion of this specification:This standard doesnot purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.NOTE1Throughout this specification,use of the term alloy in thegeneral sense includes aluminum as well as aluminum alloy.NOTE2If the alloy is specified by the purchaser,its designation shallbe in accordance with ANSI H35.1.The equivalent Unified NumberingSystem alloy designations are those shown in 1.1 preceded by A9,forexample,A91100 for aluminum 1100 in accordance with Practice E 527.2.Referenced Documents2.1 The following documents of the date of issue in effecton date of material procurement form a part of this specifica-tion to the extent referenced herein.2.2 ASTM Standards:2B 926 Method for Pinhole Determination in Aluminum andAluminum Alloy Plain Foil by Means of a Light TableE 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE 34 Test Methods for ChemicalAnalysis ofAluminum andAluminum-Base AlloysE 55 Practice for Sampling Wrought Nonferrous Metals andAlloys for Determination of Chemical CompositionE 96/E 96M Test Methods for Water Vapor Transmission ofMaterialsE 252 Test Method for Thickness of Thin Foil,Sheet,andFilm by Mass MeasurementE 345 Test Methods of Tension Testing of Metallic Foil1This specification is under the jurisdiction of ASTM Committee B07 on LightMetals and Alloys and is the direct responsibility of Subcommittee B07.03 onAluminum Alloy Wrought Products.Current edition approved May 1,2006.Published May 2006.Originallyapproved in 1969.Last previous edition approved in 2000 as B 47900.2For 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 Document Summary page onthe ASTM website.TABLE 1 Chemical Composition LimitsA,B,CSi+Fe1.8Ti0.08Cu0.20OtherseachD0.05E,FMn0.10OtherstotalD0.15Mg0.05Al,min.98.00GZn0.10ALimits are in percent maximum unless otherwise noted.BAnalysis shall be made for the elements for which limits are shown in this table.CFor purposes of determining conformance to these limits,an observed valueor a calculated value obtained from analysis shall be rounded to the nearest unitin the last right-hand place or figures used in expressing the specified limit,inaccordance with the rounding method of Practice E 29.DOthers includes all unlisted metallic elements.The producer may analyzesamples for trace elements not specified in the specification.However,suchanalysis is not required and may not cover all metallic Others elements.Shouldany analysis by the producer or the purchaser establish that an Others elementexceeds the limit of Each or that the aggregate of several Others elementsexceeds the limit of Total,the material shall be considered non-conforming.EFor food applications,lead,arsenic,and cadmium shall be less than 0.01%each.For purposes of determining conformance to the limits of these threeelements,an observed value or a calculated value obtained from analysis shall beconsidered significant,in accordance with the absolute method of Practice E 29.FFood packaging,in accordance with CONEG Model Legislation,shall have amaximum total of less than 100 ppm for the combined total of lead,me