ASTM B240-2007e1 Standard Specification for Zinc and Zinc-Aluminum (ZA) Alloys in Ingot Form for Foundry and Die Castings.pdf
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1、Designation: B 240 071Standard Specification forZinc and Zinc-Aluminum (ZA) Alloys in Ingot Form forFoundry and Die Castings1This standard is issued under the fixed designation B 240; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,
2、 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.1NOTESummary of Changes was corrected editorially in March 2009.1. Scope*1.1 This specification covers commercial zin
3、c 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:Common Traditional ASTMAUNSAAlloy 3 Zamak 3 AG 40
4、A Z33521Alloy 7 Zamak 7 AG 40B Z33522Alloy 5 Zamak 5 AC 41A Z35530Alloy 2 Zamak 2 AC 43A Z35540ZA-8 ZA-8 . Z35635ZA-12 ZA-12 . Z35630ZA-27 ZA-27 . Z35840_ASee Table 1, footnote B.1.2 Zinc alloys Z33521, Z33522, Z35530, and Z35540 areused primarily for remelting in the manufacture of pressure diecast
5、ings. Zinc-aluminum alloys Z35635, Z35630, and Z35840are 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 val
6、ues stated in inch-pound units are to be regardedas standard.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 th
7、eresponsibility 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 applicabilit
8、y 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 Cast
9、ingsB 275 Practice for Codification of Certain Nonferrous Met-als and Alloys, Cast and WroughtB 897 Specification for the Configuration of Zinc and ZincAlloy Jumbo and Block IngotB 899 Terminology Relating to Non-ferrous Metals andAlloysB 908 Practice for the Use of Color Codes for Zinc CastingAlloy
10、 IngotE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE47 Test Methods for Chemical Analysis of Zinc Die-Casting Alloys3E88 Practice for Sampling Nonferrous Metals and Alloysin Cast Form for Determination of Chemical CompositionE 527 Practice for Num
11、bering Metals and Alloys in theUnified Numbering System (UNS)E 536 Test Methods for ChemicalAnalysis of Zinc and ZincAlloysE 634 Practice for Sampling of Zinc and Zinc Alloys forOptical Emission Spectrometric Analysis2.3 Other ASTM Document:1This specification is under the jurisdiction of ASTM Commi
12、ttee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.04 on Zinc and Cadmium.Current edition approved July 1, 2007. Published August 2007. Originallyapproved in 1949. Last previous edition approved in 2006 as B 240 - 06.2For referenced ASTM standards, visit the
13、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.3Withdrawn.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM Internatio
14、nal, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Methods for Emission Spectrochemical Analysis42.4 ISO Standard5ISO 301 Zinc Alloy Ingots Intended for CastingISO 38151 Zinc and zinc alloys Part 1:Analysis of solidsamples by optical emission spectrometry.ISO 38
15、152 Zinc and zinc alloys Part 2: Analysis byinductively coupled plasma optical emission spectrometry.3. Terminology3.1 Terms shall be defined in accordance with TerminologyB 899.3.2 Definitions of Terms Specific to This Standard:3.2.1 continuous casting, na casting technique in which acast is contin
16、uously 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
17、 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 includethe following information:4.1.1 Quantity in pounds,4.1.2
18、 Alloy (Table 1),4.1.3 Size, if not manufacturers standard (see Section 7),4.1.4 Specification number and date,4.1.5 Source inspection (Section 10),4.1.6 Marking (Section 12), and4.1.7 Whether certification is required (Section 13).5. Materials and Manufacturer5.1 The material covered by this specif
19、ication shall be ofuniform quality and reasonably free from dross, adheringforeign matter, and surface oxide.6. Chemical Requirements6.1 The ingots shall conform to the requirements as tochemical composition prescribed in Table 1. Conformanceshall be determined by the manufacturer by analyzing sampl
20、estaken at the time the ingots are poured or samples taken fromthe ingots. Unless otherwise agreed in the contact or purchaseorder, sampling procedure will be the manufacturers choice.7. Ingot Sizes and Shapes7.1 Zinc casting alloy ingots are typically supplied in ingotbundles weighing 1700 to 2400
21、lb.7.2 Ingots and bundles vary in size and weight depending onthe alloy and supplier.7.2.1 Standard ingots have a nominal weight in the range of17 to 24 lb. and are generally 24 to 26 in. long.7.2.2 Margash bars or ingots come in two sizes with anominal weight in the range of either 12 to 14 lb. or
22、20 to 24lb.7.3 Zinc casting alloy ingot may be ordered in jumbos orblocks, as specified in Specification B 897.7.4 Zinc casting alloy ingot may also be ordered in othershapes.4Methods for Emission Spectrochemical Analysis: General Practices, Nomen-clature, Standard Methods, Proposed Methods, Suggest
23、ed Methods, ASTM Inter-national, 1982 .5Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.TABLE 1 Chemical and North American Color Code RequirementsAlloy 3A,B,C,DAlloy 7A,B,C,DAlloy 5A,B,C,DAlloy 2A,B,C,DZA-8B,C,EZA-12B,C,E
24、ZA-27B,C,EZamak 3 Zamak 7 Zamak 5 Zamak 2 ZA-8 ZA-12 ZA-27(AG40A) (AG40B) (AC41A) (AC43A)Z33521 Z33522 Z35530 Z35540 Z35635 Z35630 Z35840Color CodeFNone Brown Black Green Blue Orange PurpleElementAluminum 3.9-4.3 3.9-4.3 3.9-4.3 3.9-4.3 8.2-8.8 10.8-11.5 25.5-28.0Magnesium 0.03-0.06 0.010-0.020 0.03
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