ASTM_B_327_-_16.pdf

Designation:B32716Standard Specification forMaster Alloys Used in Making Zinc Die Casting Alloys1This standard is issued under the fixed designation B327;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 aluminumbase and zincbasemaster alloys used to make zinc die-casting alloys.Alloycompositions specified for aluminumbase master alloys(hard-eners)are designated as shown in Table 1.Alloy compositionsspecified for the zinc-base master alloys are designated asshown in Table 2.1.2 Aluminum alloy hardeners are added to Special HighGrade zinc(per Specification B6)in the proper alloying ratios,as shown in Table 1,to produce zinc alloys for die casting.1.3 Zinc-base master alloy is added to Special High Gradezinc(per Specification B6)in the proper alloying ratio,asshown in Table 3,to produce zinc alloy for die casting.1.4 Master alloys may be supplied in the form of shot,bar,ingot or jumbo ingot as specified by the purchaser.1.5 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.1.6 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:2B6 Specification for ZincB275 Practice for Codification of Certain Zinc,Tin and LeadDie CastingsB899 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 SpecificationsE34 Test Methods for Chemical Analysis of Aluminum andAluminum-Base AlloysE88 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 ZincAlloysE1251 Test Method for Analysis of Aluminum and Alumi-num Alloys by Spark Atomic Emission Spectrometry2.3 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 hardener,nan aluminum-base master alloy added toSpecial High Grade Zinc(SHG)to produce a zinc alloy for diecasting.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 July 2016.Originally approvedin 1958.Last previous edition approved in 2013 as B327 13a.DOI:10.1520/B0327-16.2For 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 4.Ordering Information4.1 Orders for master alloys under this specification shallinclude the following information:4.1.1 Alloy(Table 1 or Table 2),4.1.2 Form:that is,shot,bar,ingot or jumbo ingot,4.1.3 Size:that is,maximum shot size or size of bar,ingot,or jumbo ingot,4.1.4 Unit weight:that is,nominal weight of shot per bag ornominal weight of each bar,ingot,or jumbo ingot,4.1.5 Markings on shot bags,bars,ingot or jumbo ingot,4.1.6 Palletizing,if required:means of palletizing andmaximum weight per pallet load,4.1.7 Place of inspection(Section 8),and4.1.8 For additional information see Specification B949.5.Materials and Manufacture5.1 The material may be made by any suitable process.5.2 The material covered by this specification shall be ofuniform quality and shall be free of dross,flux,or