1、Designation:B613American Association of StateHighway and TransportationOfficials StandardAASHTO No:M120-77Standard Specification forZinc1This standard is issued under the fixed designation B6;the number immediately following the designation indicates the year of originaladoption or,in the case of re
2、vision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()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 cover
3、s zinc metal made from ore orother material by a process of distillation or by electrolysis infive grades as follows:1.1.1 LME Grade1.1.2 Special High Grade1.1.3 High Grade1.1.4 Intermediate Grade1.1.5 Prime Western GradeNOTE1Certain continuous galvanizing grades are specified in Speci-fication B852
4、.Other continuous galvanizing and controlled lead gradesare not included in this specification but are covered by specific userpurchasing specifications.1.2 This specification does not cover zinc produced by“sweating”or remelting of secondary zinc.1.3 The values stated in inch-pound units are to be
5、regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user
6、 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 prio
7、r 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:2B852 Specification for Continuous Galvanizing Grade(CGG)Zinc Alloys for Hot-Dip Galvanizing of SheetS
8、teelB897 Specification for Configuration of Zinc and ZincAlloyJumbo Block and Half Block IngotB899 Terminology Relating to Non-ferrous Metals and Al-loysB914 Practice for Color Codes on Zinc and ZincAlloy Ingotfor Use in Hot-Dip Galvanizing of SteelB949 Specification for General Requirements for Zin
9、c 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 ISO Standards:3ISO 3815-1 Zinc
10、and zinc alloys Part 1:Analysis of solidsamples 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 Th
11、is Standard:3.2.1 LME Grade,na grade of zinc containing a minimumof 99.995%zinc,with controlled impurity levels,as specifiedin Table 1.3.2.2 Special High Grade,na high purity grade of zinccontaining a minimum of 99.990%zinc,with controlledimpurity levels,as specified in Table 1.1This specification i
12、s 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 1911.Last previous edition approved in 2012 as B6 12.DOI:10.1520/B00
13、06-13.2For 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.3Available from American National Standards Institute(ANSI),
14、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 States1 3.2.3 High Grade,na grade of zinc containing a minimumof 99.95%z
15、inc,with controlled impurity levels,as specified inTable 1.3.2.4 Intermediate Grade,na grade of zinc containing aminimum of 99.5%zinc,with controlled impurity levels,asspecified in Table 1.3.2.5 Prime Western Grade,na grade of zinc containing0.5 to 1.4%lead,a minimum of 98.5%zinc,with controlledimpu
16、rity levels,as specified in Table 1.3.3 Abbreviations:3.3.1 LMELME Grade Zinc3.3.2 SHGSpecial High Grade Zinc3.3.3 HGHigh Grade Zinc3.3.4 IGIntermediate Grade Zinc3.3.5 PWGPrime Western Grade Zinc4.Ordering Information4.1 Orders for zinc metal under this specification shallinclude information as specified in Specification B949,Section4.5.Materials and Manufacture5.1 The manufacturer shall use care to have each lot of zincmetal be as uniform in quality as possible.6.Chemical Requirements6.1 The z