1、Designation: B792 16Standard 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
2、 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
3、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 AZ3
4、0500 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 thesaf
5、ety 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 he
6、althpractices, 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 t
7、o 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 N
8、onferrous 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 soli
9、dsamples 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 p
10、rocess 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
11、 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
12、 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:10.1
13、520/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 Inst
14、itute (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 States17. Method of Chemical Analysis7.1 The dete
15、rmination 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.NOTE 1Test Methods E536 is directly applicable,
16、 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 qualityassu
17、rance 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 and shall be free from dross, s
18、lag, or otherharmful contamination. The ingot shall also be reasonably freeof surface corrosion and adhering foreign matter.9. Physical Properties NA10. Mechanical Properties NA11. Dimensions, Mass, and Permissible Variation, andShapes and Sizes NA12. Workmanship, Finish, and Appearance NA13. Inspec
19、tion13.1 See appropriate requirements in Specification B949.14. Rejection and Rehearing14.1 See appropriate requirements in Specification B949.15. Certification15.1 See appropriate requirements in Specification B949.16. Product and Package Marking, Packaging andPreparation for Delivery16.1 See appro
20、priate requirements in Specification B949.17. Keywords17.1 casting; casting alloys; gravity casting; permanentmold casting; slush casting; zinc; zinc alloysSUMMARY OF CHANGESCommittee B02 has identified the location of selected changes to this standard since the last issue (B79215)that may impact th
21、e use of this standard. (Approved May 1, 2016.)(1) The references to specific sections in Specification B949were removed.(2) Several sections added to conform to a standard templateand reference Specification B949.Committee B02 has identified the location of selected changes to this standard since t
22、he last issue (B79213)that may impact the use of this standard. (Approved May 1, 2015.)(1) The definition for slush casting was added to TerminologySection 3.TABLE 1 Chemical and North American Color CodeRequirementsA,BComposition, %UNS Z34510Slush Casting Alloy AUNS Z30500Slush Casting Alloy BColor
23、 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 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 p
24、urposes ofdetermining conformance with this specification, the observed or calculated valueobtained from analysis shall be rounded 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 desig
25、nations were established in accordance with Practice E527.CRefer to Practice B908. (Note: Colors indicated are for North Americanapplications.)B792 162ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Use
26、rs of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement 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
27、 five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technic
28、al committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views 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
29、, 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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 163
