ASTM_B_240_-_13.pdf

Designation:B24013Standard Specification forZinc and Zinc-Aluminum(ZA)Alloys in Ingot Form forFoundry and Die Castings1This standard is issued under the fixed designation B240;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.This standard has been approved for use by agencies of the Department of Defense.1.Scope*1.1 This specification covers commercial zinc and zinc-aluminum(ZA)alloys in ingot form for remelting for themanufacture of pressure die castings,foundry castings andcontinuous cast bar stock as designated and specified in Table1.Seven alloy compositions are specified,designated asfollows:CommonTraditionalASTMAUNSAAlloy 3Zamak 3AG 40AZ33524Alloy 7Zamak 7AG 40BZ33526Alloy 5Zamak 5AC 41AZ35532Alloy 2Zamak 2AC 43AZ35544ZA-8ZA-8.Z35637ZA-12ZA-12.Z35632ZA-27ZA-27.Z35842ASee Table 1,footnote B.1.2 Zinc alloys Z33524,Z33526,Z35532,and Z35544 areused primarily for remelting in the manufacture of pressure diecastings.Zinc-aluminum alloys Z35637,Z35632,and Z35842are used for remelting in the manufacture of both foundry andpressure die castings.Castings made from these ingots arespecified in Specification B86,Standard Specification for Zincand Zinc-Aluminum Alloys for Foundry and Die Castings.1.3 The values stated in inch-pound units are to be regardedas standard.No other units of measurement are included in thisstandard.1.4 Systems of nomenclature used to designate zinc andzinc-aluminum(ZA)alloys used for casting are described inAppendix X1.1.5 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 appropriateMaterial Safety Data Sheet(MSDS)for this product/materialas provided by the manufacturer,to establish appropriatesafety and health practices,and determine the applicability ofregulatory limitations prior to use.2.Referenced Documents2.1 The following documents of the issue in effect on dataof order acceptance form a part of this specification to theextent referenced herein:2.2 ASTM Standards:2B86 Specification for Zinc and Zinc-Aluminum(ZA)AlloyFoundry and Die CastingsB275 Practice for Codification of Certain Nonferrous Metalsand Alloys,Cast and WroughtB897 Specification for Configuration of Zinc and ZincAlloyJumbo Block and Half Block IngotB899 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 SpecificationsE527 Practice for Numbering Metals and Alloys in theUnified Numbering System(UNS)E536 Test Methods for Chemical Analysis of Zinc and ZincAlloys2.3 Other ASTM Document:Methods for Emission Spectrochemical Analysis31This 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 Feb.1,2013.Published March 2013.Originallyapproved in 1949.Last previous edition approved in 2010 as B240 10.DOI:10.1520/B0240-13.2For 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.3Methods for Emission Spectrochemical Analysis:General Practices,Nomenclature,Standard Methods,Proposed Methods,Suggested Methods,ASTMInternational,1982.*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 2.4 ISO Standards:4ISO 301 Zinc Alloy Ingots Intended for CastingISO 38151 Zinc and zinc alloys Part 1:Analysis of solidsamples by optical emission spectrometry.ISO 38152 Zinc and zinc alloys Part 2:Analysis byinductively coupled plasma optical emission spectrometry.3.Terminology3.1 Terms shall be defined in accordance with TerminologyB899.3.2 Definitions of Terms Specific to This Standard:3.2.1 continuous casting,na casting technique in which acast is continuously withdrawn through the bottom of the moldas it solidifies,so that its length is not determined by molddimensions;used chiefly to produce semifinished mill productssuch as billets,blooms,ingots,slabs and tubes;also known asconcast.3.2.2 die casting,na casting process in which moltenmetal is injected under high velocity and pressure into a metaldie and solidified,also a product produced by such a process.Alternately known as pressure die casting.4.Ordering Information4.1 Orders for ingot under this specification shall includeinform