1、Designation: B 792 08Standard Specification forZinc Alloys in Ingot Form for Slush Casting1This standard is issued under the fixed designation B 792; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A numb
2、er 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 an
3、d 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:UNS ASTMZ34510 Slush Casting Alloy A
4、Z30500 Slush 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 thes
5、afety 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 appropriatesa
6、fety 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 dateof order acceptance form a part of this specification to theextent referenced herein:2.2 ASTM Standards:2B 899 Terminology
7、 Relating to Non-ferrous Metals andAlloysB 908 Practice for the Use of Color Codes for Zinc CastingAlloy 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
8、Nonferrous Metals and Alloysin Cast Form for Determination of Chemical CompositionE 527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)E 536 Test Methods for ChemicalAnalysis of Zinc and ZincAlloys2.3 ISO Standards:4ISO 3815-1 Zinc and zinc alloys Part 1:Analysis of sol
9、idsamples 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 TerminologyB 899.1This specification is under the jurisdiction of ASTM Committee B02 onNonf
10、errous Metals and Alloys and is the direct responsibility of SubcommitteeB02.04 on Zinc and Cadmium.Current edition approved Nov. 1, 2008. Published December 2008. Originallyapproved in 1988. Last previous edition approved in 2005 as B 792 01 (2005)1.2For referenced ASTM standards, visit the ASTM we
11、bsite, 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.4Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, N
12、Y 10036, http:/www.ansi.org.TABLE 1 Chemical and North American Color CodeRequirementsA,BComposition, %UNS Z34510Slush Casting Alloy AUNS Z30500Slush Casting Alloy BColor CodeCBlack/Red Black/OrangeElementCopper 0.20.3 0.1 maxAluminum 4.505.00 5.255.75Lead 0.007 max 0.007 maxCadmium 0.005 max 0.005
13、maxTin 0.005 max 0.005 maxIron 0.100 max 0.100 maxMagnesium 0.010 max 0.010 maxZinc Remainder RemainderAThe following applies to all specified limits in this table. For purposes ofdetermining conformance with this specification, the observed or calculated valueobtained from analysis shall be rounded
14、 off “to the nearest unit” in the lastright-hand place of figures used in expressing the specified limit, in accordancewith the rounding method of Practice E29.BUNS designations were established in accordance with Practice E 527.CRefer to Practice B 908. (Note: Colors indicated are for North America
15、napplications.)1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4. Ordering Information4.1 Orders for ingots under this specification shall includethe following informa
16、tion:4.1.1 Quantity in pounds,4.1.2 Alloy (Table 1),4.1.3 Size, if not manufacturers standard,4.1.4 Specification number and date,4.1.5 Source inspection (Section 7), and4.1.6 Marking (Section 9).5. Materials and Manufacture5.1 The alloys may be made by any approved process.5.2 The material covered
17、by this specification shall be ofuniform quality and shall be free from dross, slag, or otherharmful contamination. The ingot shall also be reasonably freeof surface corrosion and adhering foreign matter.6. Chemical Requirements6.1 LimitsThis alloy shall conform to the requirements asto chemical com
18、position prescribed in Table 1. Conformanceshall be determined by the producer by analyzing samplestaken at the time the ingots are made. If the producer hasdetermined the chemical composition of the metal during thecourse of manufacture, he shall not be required to sample andanalyze the finished pr
19、oduct.6.2 In case of dispute, the following requirements shallapply:6.2.1 Number of SamplesSamples for verification ofchemical composition shall be taken as follows:6.2.1.1 If the ingots are shipped in carload lots of the samealloy, not less than five ingots shall be taken at random fromthe carload
20、for sampling. If the shipment is less than a carloadlot, one sample ingot shall be taken for each 10 000 lb (4 500kg) or fraction thereof. When it is deemed necessary, a samplemay be taken from each melt of 1 000 lb (450 kg) or more.6.3 Methods of SamplingSamples from ingots for deter-mination of ch
21、emical composition shall be taken in accordancewith one of the following methods:6.3.1 Samples for chemical analysis shall be taken from thematerial by drilling, sawing, milling, turning, or clipping arepresentative piece or pieces to obtain weight of preparedsample not less than 100 g. Sampling sha
22、ll be in accordancewith Practice E88.6.3.2 By agreement, an optional method of sampling foranalysis may be by melting together representative portions ofeach ingot selected, and then sampling the liquid composite bycasting suitable specimens for either spectrographic or chemi-cal analysis.6.3.3 Samp
23、le may also be in the form of a separately castspectrographic specimen taken from the same pour used to castthe ingot.6.4 Method of AnalysisThe determination of chemicalcomposition shall be made in accordance with suitable chemi-cal (Test Methods E 536 or Test Methods E47for tin), suitablespectroche
24、mical methods ISO 3815-1 or ISO 3815-2, or othermethods. In case of dispute, the results should preferably besecured by Test Methods E 536 and Test Methods E47for tinonly, or ISO 3815-1 or ISO 3815-2 and shall be the basis ofacceptance.7. Source Inspection7.1 If the purchaser desires that his repres
25、entative inspect orwitness the inspection and testing of the product prior toshipment, such agreement shall be made by the purchaser andproducer or supplier as part of the contract or purchase order.7.2 When such inspection or witness of inspection andtesting is agreed upon, the producer or supplier
26、 shall afford thepurchasers representative all reasonable facilities to satisfyhim that the product meets the requirements of this specifica-tion. Inspection and tests shall be conducted so there is nounnecessary interference with the producers operations.8. Rejection and Rehearing8.1 Material that
27、fails to conform to the requirements of thisspecification may be rejected. Rejection should be reported tothe producer or supplier promptly and in writing. In case ofdissatisfaction with the results of the test, the producer orsupplier may make claim for a rehearing. If the rehearingestablishes that
28、 the material does not conform to the require-ments of this specification, as much of the rejected originalmaterial as possible shall be returned to the producer orsupplier.9. Identification Marking9.1 All ingots shall be properly marked for identificationwith the producers name or brand.9.2 Each bu
29、ndle or skid shall be identified with the produc-ers heat, lot, or other identification mark.9.3 Each ingot, bundle or skid shall be marked with theappropriate Color Code for the alloy as per North AmericanRequirements in Practice B 908.10. Preparation for Delivery10.1 PackagingUnless otherwise spec
30、ified, the ingot shallbe packaged to provide adequate protection during normalhandling and transportation. Each package shall contain onlyone alloy unless otherwise agreed upon.11. Keywords11.1 casting; casting alloys; gravity casting; permanentmold casting; slush casting; zinc; zinc alloysB792082SU
31、MMARY OF CHANGESCommittee B02 has identified the location of selected changes to this standard since the last issue(B 792 - 01 (2005)1) that may impact the use of this standard. (Approved November 1, 2008.)(1) Revisions have been made to Sections 2.3 and 6.4 to addanalytical spectrochemical methods
32、ISO 3815-1 andISO 3815-2.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infring
33、ement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard
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35、known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).B792083
