ASTM_B_792_-_16.pdf

Designation:B79216Standard Specification forZinc Alloys in Ingot Form for Slush Casting1This standard is issued under the fixed designation B792;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()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers commercial zinc alloys iningot form for remelting for the manufacture of castings fromthe alloys as specified and designated as shown in Table 1.1.2 Slush casting alloys are used primarily for the manufac-ture of hollow castings such as lighting fixtures,lamp bases,and small statues.1.3 This specification covers two zinc alloys which arespecified and designated as follows:UNSASTMZ34510Slush Casting Alloy AZ30500Slush Casting Alloy B1.4 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to become familiarwith all hazards including those identified in the appropriateSafety Data Sheet(SDS)for this product/material as providedby the manufacturer,to establish appropriate safety and healthpractices,and determine the applicability of regulatory limi-tations prior to use.2.Referenced Documents2.1 The following documents of the issue in effect on dateof order acceptance form a part of this specification to theextent referenced herein:2.2 ASTM Standards:2B899 Terminology Relating to Non-ferrous Metals and Al-loysB908 Practice for the Use of Color Codes for Zinc CastingAlloy IngotB949 Specification for General Requirements for Zinc andZinc Alloy ProductsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE88 Practice for Sampling Nonferrous Metals and Alloys inCast Form for Determination of Chemical CompositionE527 Practice for Numbering Metals and Alloys in theUnified Numbering System(UNS)E536 Test Methods for Chemical Analysis of Zinc and ZincAlloys2.3 ISO Standards:3ISO 3815-1 Zinc and zinc alloys Part 1:Analysis of solidsamples by optical emission spectrometryISO 3815-2 Zinc and zinc alloys Part 2:Analysis byinductively coupled plasma optical emission spectrometry3.Terminology3.1 Terms shall be defined in accordance with TerminologyB899.3.2 Definitions of Terms Specific to This Standard:3.2.1 slush casting,na process for producing hollowcastings by pouring special molten alloys into a mold,allowingthe metal in contact with the mold to solidify,and then pouringout the still molten metal in the center.4.Ordering Information4.1 See appropriate requirements in Specification B949.5.Chemical Requirements5.1 LimitsThis alloy shall conform to the requirements asto chemical composition Table 1.5.2 Chemical requirement proceduressee appropriate re-quirements in Specification B949.6.Sampling for Determination of Chemical Composition6.1 See appropriate requirements in Specification B949.1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.04 on Zinc and Cadmium.Current edition approved May 1,2016.Published May 2016.Originallyapproved in 1988.Last previous edition approved in 2015 as B792 15.DOI:10.1520/B0792-16.2For 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.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*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 States1 7.Method of Chemical Analysis7.1 The determination of chemical composition shall bemade in accordance with Test Methods E536,or ISO 3815-1,or ISO 3815-2 or other methods.In case of dispute,the resultssecured by Test Methods E536,or ISO 3815-1,or ISO 3815-2shall be the basis of acceptance.NOTE1Test Methods E536 is directly applicable,in an unmodifiedform,only to alloys 3,5,and 7.ISO 3815-1 and ISO 3815-2 are genericmethods applied to zinc and zinc alloys.Each of the methods may bemodified and formatted for the alloy to be assayed.An experiencedchemist,using suitable and/or traceable standards along with valid qualityassurance techniques,will be able to perform and validate the methodsand demonstrate acceptable precision and accuracy.8.Materials and Manufacture8.1 The alloys may be made by any approved process.8.2 The material covered by this specification shall be ofuniform quality a