1、Designation:B803/B803M08(Reapproved 2016)Standard Specification forHigh-Strength Zinc5%Aluminum-Mischmetal Alloy-CoatedSteel Core Wire for Use in Overhead Electrical Conductors1This standard is issued under the fixed designation B803/B803M;the number immediately following the designation indicates t
2、he yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers round,high strength,zinc5%alu
3、minum-mischmetal(Zn5AlMM)alloy-coated,steel corewire with one class of Zn5AlMM coating(MA3)for use inoverhead electrical conductors.1.2 This specification covers wire of diameter from 0.0500to 0.1900 in.inclusive or 1.27 to 4.82 mm inclusive.1.3 The values stated in either SI units or inch-pound uni
4、tsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.2.Referenced Documents2.1 The following documents
5、 of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein.2.2 ASTM Standards:2A90/A90M Test Method for Weight Mass of Coating onIron and Steel Articles with Zinc or Zinc-Alloy CoatingsA370 Test Methods and Definitions for Mechanical Testingo
6、f Steel ProductsA751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsB193 Test Method for Resistivity of Electrical ConductorMaterialsB750 Specification for GALFANE47 Test Methods for Chemical Analysis of Zinc Die-Casting Alloys(Withdrawn 1997)3E1277 Test Method for An
7、alysis of Zinc-5%Aluminum-Mischmetal Alloys by ICP Emission SpectrometryE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.3 Other Standard:GF-1 Standard Practice for Determination of Cerium andLanthanum Compositions in GalfanAlloy(5%Al-0.04%La-0.04%C
8、e-Bal SHG Zn)43.Terminology3.1 Abbreviations:3.1.1 MMmischmetal3.1.2 Zn5AlMMzinc5%aluminum mischmetal alloy3.2 Definitions:3.2.1 lotunless otherwise specified in the contract ororder,a lot shall consist of all coils of wire of the samediameter and unit lengths submitted for inspection at the sametim
9、e.3.2.2 product codeDefines product coating type,coatingclass and strength grade.This specification covers only HighStrength ClassAZn5AlMM coated products and identified asproduct code MA3.4.Ordering Information4.1 Orders for material under this specification shall includethe following information:4
10、.1.1 Quantity of each size,4.1.2 Wire diameter in inches or millimeters(Section 13),4.1.3 Certification,if required(Section 18),4.1.4 Test report,if required(Section 18),and4.1.5 Package Size(Section 19).4.1.6 Product Code(Paragraph 3.2.2).4.1.7 Order Example:five multiple lengths of 12 000 ft.each,
11、0.1327 in.MA3 wire,packaged onto wooden non-returnable reels,with certified test report.5.Materials and Manufacture5.1 The base metal shall be steel produced by the open-hearth,electric furnace,or basic oxygen process.1This specification is under the jurisdiction of ASTM Committee B01 onElectrical C
12、onductors and is the direct responsibility of Subcommittee B01.05 onConductors of Ferrous Metals.Current edition approved Oct.1,2016.Published October 2016.Originallyapproved in 1989.Last previous edition approved in 2008 as B803/B803M 081.DOI:10.1520/B0803_B0803M-08R16.2For referenced ASTM standard
13、s,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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available
14、from International Lead Zinc Research Organization(ILZRO),1822NC Highway 54 East,Suite 120,Durham,NC 27713,http:/www.ilzro.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.2 The wire shall be cold drawn and coated withZn5AlMM alloy t
15、o produce the desired properties.6.Chemical Composition6.1 The steel shall conform to the requirements prescribedin Table 1.6.2 Chemical analysis of the steel shall be conducted inaccordance with Test Methods,Practices,and TerminologyA751.6.3 The ingot form of zinc-5%aluminum-mischmetal alloyshall c
16、onform to Specification B750.6.3.1 For a two-step coating operation where the firstcoating is zinc(hot-dip galvanized or electrogalvanized),thefinal bath may have an aluminum content of up to 7.2%,toprevent depletion of the aluminum content of the bath.6.3.2 Method of AnalysisThe determination of chemicalcomposition shall be made in accordance with suitable chemi-cal(Test Methods E47 for Tin),ICP Argon Plasma Spectro-metric(Practice E1277),or other methods.In case of dispute,the results secured
