ASTM_B_341_-_B_341M_-_02.pdf

Designation:B 341/B 341M 02Standard Specification forAluminum-Coated(Aluminized)Steel Core Wire forAluminum Conductors,Steel Reinforced(ACSR/AZ)1This standard is issued under the fixed designation B 341/B 341M;the number immediately following the designation indicates the 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(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers round,aluminum-coated steelcore wire used for mechanical reinforcement in the manufac-ture of aluminum conductors,steel reinforced(ACSR).1.2 This specification covers wire of diameter from 0.0500to 0.1900 in.or 1.60 to 4.80 mm,inclusive.1.3 The values stated in inch-pound units or SI units are tobe regarded separately as standard.The values in each systemare not exact equivalents;therefore,each system shall be usedindependently of the other.Combining values from the twosystems may result in nonconformance with this specification.2.Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein.2.2 ASTM Standards:A 370 Test Methods and Definitions for Mechanical Testingof Steel Products2A 428/A 428M Test Method for Weight Mass of Coatingon Aluminum-Coated Iron or Steel Articles3A 751 Test Methods,Practices,and Terminology forChemical Analysis of Steel Products2B 193 Test Method for Resistivity of Electrical ConductorMaterials43.Terminology3.1 Definition:3.1.1 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 sametime.4.Ordering Information4.1 Orders for material under this specification shall includethe following information:4.1.1 Quantity of each size,4.1.2 Wire diameter in inches or millimetres(see 1.2,13.1),4.1.3 Certification,if required(Section 19),4.1.4 Test report,if required(Section19),and4.1.5 Package size(Section 20).5.Materials and Manufacture5.1 The base metal shall be steel produced by the open-hearth,electric-furnace,or basic-oxygen process.5.2 The wire shall be cold drawn and coated with aluminumto produce the desired properties.5.3 The ingot or pig aluminum used for coating shallconform to the following impurity limits:Copper,max,%0.10Iron,max,%0.506.Chemical Composition6.1 The steel shall conform to the requirements prescribedin Table 1.6.2 Chemical analysis shall be conducted in accordancewith Test Methods,Practices,and Terminology A 751.7.Tensile Test7.1 The material,as represented by the test specimens,shallconform to the tensile properties prescribed in Table 2 or Table3.7.2 Tensile tests shall be conducted in accordance with TestMethods and Definitions A 370,using the initial settings fordetermining stress at 1%extension given in Table 4 or Table5 of this specification.1This specification is under the jurisdiction of Committee B01 on ElectricalConductors and is the direct responsibility of Subcommittee B01.05 on Conductorsof Ferrous Metals.Current edition approved Oct.10,2002.Published October 2002.Originallypublished as B 341 88.Last previous edition B 341 00.2Annual Book of ASTM Standards,Vol 01.03.3Annual Book of ASTM Standards,Vol 01.06.4Annual Book of ASTM Standards,Vol 02.03.TABLE 1 Chemical RequirementsElementComposition,%Carbon0.50 to 0.95Manganese0.50 to 1.30Phosphorus,max0.040Sulfur,max0.050Silicon0.10 to 0.351Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.7.3 Test Specimens The test specimens shall be free ofbends or kinks other than the curvature resulting from the usualcoiling operations.Any hand straightening necessary to permitinsertion of the specimen in the jaws of the testing machineshall be performed by drawing between wood blocks or bysome other equally satisfactory means.8.Wrap Test8.1 The material,as represented by the test specimens,shallnot fracture when the aluminized wire is wrapped at a rate notexceeding 15 turns/min in a close helix of at least eight turnsaround a cylindrical mandrel with a diameter equal to twotimes the specified diameter of the wire under test,65%.9.Coating Test9.1 The material,as represented by the test specimens,shallconform to the coating requirements of Table 6 or Table 7,forthe diameter specified.9.2 The coating test shall be conducted in accordance withTest Method A 428/A 428M.10.Adherence of Coating Test10.1 The material,as represented by the samples,shall becapable of being wrapped in a close helix at a rate notexceeding 15 turns/min around a cylindrical mandrel having adiameter as prescribed in Table 8 or Table 9,without crackingor flaking the aluminum coating to such an extent that anyaluminum can be removed by rubbing with the bare fingers.NOTE1Loosening or detachment during the adhesion test of super-ficial,small particles of