1、Designation: B960 12Standard Specification forPrime Western Grade-Recycled (PWG-R) Zinc1This standard is issued under the fixed designation B960; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number i
2、n 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 prime western grade-recycled(PWG-R) zinc made by recycling zinc secondary materialsincluding but not limited to dros
3、ses and skimmings.1.2 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.1.3 This standard does not purport to address all of thesafety conc
4、erns, 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 h
5、ealth practices, and determine the applicability ofregulatory limitations prior to use.2. Referenced Documents2.1 The following documents of the issue in effect on thedate of material purchase form a part of this specification to theextent referenced herein.2.2 ASTM Standards:2B6 Specification for Z
6、incB897 Specification for Configuration of Zinc and ZincAlloy Jumbo Block and Half Block IngotB899 Terminology Relating to Non-ferrous Metals andAlloysB914 Practice for Color Codes on Zinc and Zinc AlloyIngot for Use in Hot-Dip Galvanizing of SteelB949 Specification for General Requirements for Zinc
7、 andZinc Alloy ProductsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE88 Practice for Sampling Nonferrous Metals and Alloys inCast Form for Determination of Chemical CompositionE527 Practice for Numbering Metals and Alloys in theUnified Numbering S
8、ystem (UNS)E536 Test Methods for Chemical Analysis of Zinc and ZincAlloys2.3 ISO Standards:3ISO 3815-1 Zinc and zinc alloysPart 1: Analysis of solidsamples by optical emission spectrometryISO 3815-2 Zinc and zinc alloysPart 2: Analysis byinductively coupled plasma optical emission spectrometry3. Ter
9、minology3.1 Terms shall be defined in accordance with TerminologyB899.3.2 Definitions of Terms Specific to This Standard:3.2.1 Prime Western Grade-Recycled, na grade of zinccontaining 0.5 to 1.4 % lead, a minimum or 98.5 % zinc, withcontrolled impurity levels as specified in Table 1 made byrecycling
10、 zinc secondary materials.3.3 Abbreviations:3.3.1 PWG-RPrime Western Grade-Recycled Zinc4. Ordering Information4.1 Orders for zinc alloy ingot under this specification shallinclude information as specified in Specification B949, Section4.5. Materials and Manufacture5.1 The manufacturer shall use car
11、e to have each lot of zincmetal be as uniform in quality as possible.6. Chemical Composition6.1 The zinc metal shall conform to the requirementsprescribed in Table 1.7. Sizes and Shapes7.1 Slabs varying in weight from 40 to 60 pounds (18 to 27kg) are all considered standard slabs.7.2 PWG-R Zinc meta
12、l may be ordered in jumbos or blocksas specified in Specification B897.7.3 Other shapes and sizes as may be agreed upon betweenthe producer and the customer if they are cast to the chemicalcomposition requirements prescribed in Table 1.1This specification is under the jurisdiction of ASTM Committee
13、B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.04 on Zinc and Cadmium.Current edition approved May 1, 2012. Published August 2012. Originallyapproved in 2008. Last previous edition approved in 2008 as B960 - 08. DOI:10.1520/B0960-12.2For referenced ASTM standa
14、rds, 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,
15、New York, NY 10036, http:/www.ansi.org.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.8. Appearance8.1 The PWG-R Zinc metal shall be reasonably free ofsurface corrosi
16、on and adhering foreign material.9. Sampling for Chemical Analysis9.1 Sampling procedures shall be in compliance with theprovisions of Specification B949, Section 6.10. Methods of Chemical Analysis10.1 The chemical compositions enumerated in this speci-fication shall, in case of disagreement, be det
17、ermined by themethods mutually agreed upon and approved for refereepurposes by Test Methods E536, ISO 3815-1,orISO 3815-2.NOTE 1Test Methods E536 is directly applicable, 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. Ea
18、ch of the methods may bemodified and formatted for the alloy to be assayed. An experiencedchemist, using suitable and/or traceable standards along with valid qualityassurance techniques, will be able to perform and validate the methodsand demonstrate acceptable precision and accuracy.11. Rejection a
19、nd Rehearing11.1 Claims to be considered in accordance with the provi-sions of Specification B949, Section 8.12. Investigation of Claims12.1 Claims shall be investigated in accordance with theprovisions of Specification B949, Section 8.13. Settlement of Claims13.1 Claims shall be settled in accordan
20、ce with the provi-sions of Specification B949, Section 8.14. Product Identification Marking and Packaging14.1 Each slab, block, jumbo, or ingot shall be marked foridentification in accordance with Specification B949, Section10.15. Keywords15.1 prime western grade-recycled zinc; prime westernzinc; PW
21、G-R; recycled zinc; secondary zinc; zinc; zinc metalSUMMARY OF CHANGESCommittee B02 has identified the location of selected changes to this standard since the last issue (B960 - 08)that may impact the use of this standard. (Approved May 1, 2012.)(1) Revisions have been made to Sections 2, 4, 9, 11,
22、12, 13and 14 to reference Specification B949 and delete certainportions of these sections formerly a part of this standard.(2) The titles of Sections 4 and 14 have been revised to be inagreement with a standard format for Subcommittee B02.04standards.TABLE 1 Chemical RequirementsNOTE 1The following
23、applies to all specified limits in this table: For purposes of determining conformance with this specification, an observed valueobtained from analysis shall be rounded off “to the nearest unit” in the last right-hand place of figures used in expressing the limiting value, in accordancewith the roun
24、ding method of Practice E29.Composition, %AGrade(UNS)BColorCodeCLeadIronmaxCadmimummaxAluminummaxCoppermaxTotalNon-ZincmaxDZinc,min. bydifferencePrimeWesternGrade-Recycled,(PWG-R)(Z18004)Black 0.51.4 0.05 0.20 0.01 0.10 1.5 98.5AThis composition will remain the same as specified in B6 for Prime West
25、ern Grade.BUNS designations were established in accordance with Practice E527.CRefer to Practice B914.DPWG-R may contain small amounts of Bi, Ni, and Sn which could affect the galvanizing process or product. The maximum limits for these elements may be agreedupon by written agreement between the pro
26、ducer and consumer.B960 122ASTM 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 infri
27、ngement 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 standar
28、d or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your view
29、s 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).B960 123
