1、Designation: B354 16Standard Terminology Relating toUninsulated Metallic Electrical Conductors1This standard is issued under the fixed designation B354; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A n
2、umber in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.INTRODUCTIONThese terminologies relate only to interpretations as applied to uninsulated metallic electricalconductors in specifications under the j
3、urisdiction ofASTM Committee B01 on Electrical Conductors,and do not necessarily correspond to the definitions used in other fields.1. Scope1.1 This terminology standard defines abbreviations andterms specific to uninsulated electrical conductors. For termsrelating to superconductors, see Terminolog
4、y B713.2. Referenced Documents2.1 ASTM Standards:2B193 Test Method for Resistivity of Electrical ConductorMaterialsB713 Terminology Relating to Superconductors (Withdrawn2001)3E8/E8M Test Methods for Tension Testing of Metallic Ma-terials3. AbbreviationsAAACall aluminum alloy conductorAACaluminum co
5、nductorAACSRaluminum alloy conductor, steel reinforcedACARaluminum conductor, aluminum alloy reinforcedACSRaluminum conductor, steel reinforcedACSSaluminum conductor steel supportedAMCaluminum matrix compositeAWold designation for what is now termed AW2AW2aluminum-clad steel core wire, normal streng
6、thAW3aluminum-clad steel core wire, high strengthAZold designation (aluminized)CCAcopper-clad aluminumCCScopper-clad steelCOMPcompact constructionEHSextra high strengthGAold designation for what is now termed GA2GA2zinc coated (galvanized) steel wire, coating class AGA3zinc coated (galvanized) high
7、strength steel wire,coating class AGA4zinc coated (galvanized) extra high strength steelwire, coating class AGA5zinc coated (galvanized) ultra high strength steelwire, coating class AGBobsolete designation, class B galvanizing is no longerofferedGCold designation for what is now termed GC2GC2zinc co
8、ated (galvanized) steel wire, coating class CHShigh strengthIACSinternational annealed copper standard, which is1/58 Ohm-mm2/m at 20C for 100 % conductivityLSElow stress elongationMAold designation for what is now termed MA2MA2zinc-5 % aluminum-mischmetal alloy coated steelwire, coating class AMA3zi
9、nc-5 % aluminum-mischmetal alloy coated highstrength steel wire, coating class AMA4zinc-5 % aluminum-mischmetal alloy coated extrahigh steel wire, coating class AMA5zinc-5 % aluminum-mischmetal alloy coated ultrahigh steel wire, coating class AMBobsolete designation, class B galvanizing is no longer
10、offeredMCold designation for what is now termed MC2MC2zinc-5 % aluminum-mischmetal alloy coated steelwire, coating class CMSold designation for what is now termed MA3MMmischmetalNSnon-specularSDself dampening constructionSIWsingle input wire construction1This terminology is under the jurisdiction of
11、 ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommittee B01.01 onEditorial and Records.Current edition approved Sept. 1, 2016. Published September 2016. Originallyapproved in 1960. Last previous edition approved in 2012 as B354 12. DOI:10.1520/B0354-16.2For refer
12、enced 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.3The last approved version of this historical standard is referenced on
13、www.astm.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1TPtwisted pairTWtrapezoidal shaped wireUHSultra high strengthUNSunified numbering systemZn-5Al-MMzinc-5 % aluminum-mischmetal alloy coat-ing4. Terminology4.1 Definitions:aeo
14、lian vibrationresonant vibration of a conductor causedby the alternate shedding of wind-induced vortices fromopposite sides of the conductor. (Frequency is usually lessthan 200 Hz and amplitude rarely exceeds one conductordiameter.)anneal (annealing), na thermal treatment to change theproperties or
15、grain structure of the product. When applied toa cold-worked product having a single phase: to producesoftening by recystallization or recrystallization and graingrowth with the accompanying changes in properties. Whenapplied to a product having two or more phases: to producesoftening by changes in
16、the phase relationship that mayinclude recrystallization and grain growth.annealed wiresee soft wire.area densitymass per unit area.bare conductora conductor having no nonmetallic cover-ing.brazingthe joining of ends of two wires, rods, or groups ofwires with a nonferrous filler metal at temperature
17、s above800F (427C).breaking strengththe maximum load that a conductorattains when tested in tension to rupture.bunch-stranded conductora conductor composed of wirestwisted together with a given length and direction of lay insuch manner that the respective wires at successive crosssections along the
18、length of the conductor do not necessarilyform a symmetrical geometric pattern, nor necessarily oc-cupy the same positions relative to each other.casting, continuous, na casting produced by the continuouspouring and solidification of molten metal through a water-cooled mold which determines the cros
19、s-sectional shape.The length of the product is not restricted by mold dimen-sions.circular mil (cmil)a unit of area equal to the area of a circleone mil (0.001 in., 0.0254 mm) in diameter. The area of acircle in circular mils is equal to the square of the diameterin mils (area(cmils) = diameter(mils
20、)2), 1 cmil = 7.854 107in.2(5.067 1010m2).clad wirewire comprised of a given metal covered with arelatively thick application of a different metal. The bondingprocess is normally a combination of heat and pressure andresults in a metallurgical bond.coated wirewire comprised of a given metal covered
21、with arelatively thin application of a different metal. The coatingprocess is normally electroplating or dip coating.coil, na length of the product wound into a series ofconnected turns. The unqualified term “coil” as applied totube usually refers to a bunched coil.cold-drawingreducing the cross sec
22、tion by pulling througha die or dies, at a temperature lower than the recrystallizationtemperature.cold work, ncontrolled mechanical operations for changingthe form or cross section of a product and for producing astrain-hardened product at temperatures below the recrystal-lization bination stranded
23、 conductora conductor constructedwith wires of different diameters with such differencesoccurring either within a single layer or from layer to pact stranded conductora unidirectional or unilay orconventional concentric conductor, constructed with a cen-tral core surrounded by one or more layers of
24、helically laidwires and formed into final shape by rolling, drawing, orother means; and manufactured to a specified nominaldiameter, approximately 8 to 10 % below the nominaldiameter of a conventional non-compact conductor of thesame cross-sectional pressed stranded conductora unidirectional or unil
25、ayor conventional concentric conductor manufactured to aspecified nominal diameter 3 % less than the calculateddiameter of non-compressed conductor of the same con-struction and cross-sectional posite conductora conductor consisting of two or moretypes of wire, each type of wire being plain, clad, o
26、r coated;stranded together to operate mechanically and electrically asa single conductor.concentric-lay conductorconductor constructed with a cen-tral core surrounded by one or more layers of helically laidwires. Several types are as follows:compact round conductorsee compact stranded conduc-tor.con
27、ventional concentric conductorconductor constructedwith a round central core surrounded by one or more layers ofhelically laid round wires. The direction of lay is reversed insuccessive layers, and generally with an increase in length oflay for successive layers.equilay conductorconductor constructe
28、d with a centralcore surrounded by more than one layer of helically laid wires,all layers having a common length of lay, direction of lay beingreversed in successive layers.parallel core conductorconductor constructed with a cen-tral core of parallel-laid wires surrounded by one layer ofhelically la
29、id wires.rope-lay conductorconductor constructed of a bunch-stranded or a concentric-stranded member or members, as acentral core, around which are laid one or more helical layersof such members.unidirectional conductorconductor constructed with a cen-tral core surrounded by more than one layer of h
30、elically laidB354 162wires, all layers having a common direction of lay, withincrease in length of lay for each successive layer.unilay conductorconductor constructed with a central coresurrounded by more than one layer of helically laid wires. Alllayers having a common direction of lay and essentia
31、lly similarlength of lay, which is a multiple of the outer diameter of thefinished conductor, for each successive layer. The lay length ofthe inner layers shall not vary by more than 610 % of the laylength of the outer layer.conductivitythe measure of a materials ability to conductan electric curren
32、t between two points. Conductivity isinversely related to resistivity and typically expressed as %IACS. Annealed copper is defined as 100 % IACS and otherconductivity values are reported relative to annealed copper.conductora wire or combination of wires not insulated fromone another, suitable for c
33、arrying an electric current.conductor corethe center strand or member about whichone or more layers of wires or members are laid helically toform a concentric-lay.continuous cast drawing stockthe as-rolled section, nor-mally round, produced by a continuous casting and rollingprocess.coresee conducto
34、r core.cored, annular, conductora conductor in which one ormore layers of wires are laid helically around a central coreof metallic or nonmetallic material. The core is used as amandrel for the application of subsequent layers of wire tomaintain consistent spacing of these members around theconducto
35、r axis.direction of laythe lateral direction, designated as left-handor right-hand, in which the wires of a member or units of aconductor run over the top of the member or conductor asthey recede from an observer looking along the axis of themember or conductor.drawing stockthe as-rolled or extruded
36、 section, normallyround, made from any of a variety of manufacturingprocesses, intended as feed stock for subsequent drawingoperations.drawn wire, nwire stock brought to final dimensions by colddrawing through a die, regardless of temper or prior opera-tions.electric-butt, cold-upset welda weld betw
37、een two preparedends of adjacent lengths of work-hardenable material that ispressed together in a resistance welding apparatus whichmelts the abutting ends to unite them and form the weld. Inturn, the resulting weld zone is forced out in the form of flashby a cold-upsetting operation which, through
38、cold-working,restores the material substantially to its original tensilestrength.equilay conductorsee concentric-lay conductor.fill factorthe ratio of the weight of a given length of astranded conductor to the weight of the solid conductor ofthe same diameter, length, and material. It may also beexp
39、ressed by the ratio of the nominal area of the conductortimes (1 plus the stranding factor) and the area of the circlethat encloses the strands of the conductor.flat wire, na product up to and including 0.188 in. (4.78 mm)in thickness and up to and including 114 in. (31.8 mm) inwidth.galvanized stee
40、l wiresteel wire coated with zinc.half-hard wireas applied to aluminum, wire that has beenprocessed so as to produce a strength approximately midwaybetween that of soft wire and that of hard-drawn wire.hard-drawn wireas applied to aluminum and copper, wirethat has been cold drawn to final size so as
41、 to approach themaximum tensile strength obtainable.hot-rolled drawing stockthe as-rolled section, normallyround, produced by hot rolling in a rod mill from a billet orwire bar.intermediate temperas applied to aluminum, any temperbetween soft and hard drawn.jointthat portion of the conductor where t
42、he ends of twowires, rods, or groups of wires are joined by brazing,soldering, welding, or by mechanical means.lay, n4one turn of the helix of a wire or member of a standardconductor. See also direction of lay and length of lay.lay, vto arrange the wires or members of a conductor eitherby twisting t
43、hem or by forming them into one or more layershelically applied.lay factorthe ratio of the length of lay to the externaldiameter of the corresponding layer of wires or members inthe stranded conductor.length of laythe axial length of one turn of the helix of awire or member.lengths, nstraight pieces
44、 of the product.linear densitymass per unit length.liquor-finished wirewire, usually of ferrous material, drawnthrough a wet solution of metallic salts, that is, tin or copper,to facilitate drawing and to enhance the appearance andsurface characteristics of the finished wire, and not toprovide the p
45、roperties of a coated wire.magnet wire, na nonferrous electrical core conductor con-taining an insulating film or dielectric that creates a magneticfield for converting electrical energy into useful mechanicalwork.medium-hard drawn wireas applied to copper wire, havingtensile strength less than the
46、minimum for hard-drawn wire,but greater than the maximum for soft wire.4From or adapted from American National Standard Definitions of ElectricalTerms (ANSI C42.351957) published by the Institute of Electrical and ElectronicsEngineers, Inc. (IEEE), 445 Hoes Ln., P.O. Box 1331, Piscataway, NJ 08854-1
47、331.B354 163membera group of wires stranded together for combinationwith other stranded groups into a multiple-membered con-ductor.messenger wirea metallic supporting member either solid orstranded which may also perform the function of a conduc-tor.mila unit of length equal to11000 of an inch 0.025
48、4 mm.nominal, adjname or identifying value of a measurableproperty by which a conductor or component or property ofa conductor is identified, and to which tolerances are applied.non-specular (NS)nonreflective matte grey surface finishfor aluminum conductors.oxygen free copper, na highly conductivity
49、 copper that hasbeen produced in such manner as to contain no oxide orresidual deoxidants. It has very high resistance to hydrogenembrittlement (Copper Nos. C10200, C10300)parallel-core conductorsee concentric-lay conductor.percent conductivitythe ratio of the resistivity of theInternational Annealed Copper Standard (IACS) at 20C tothe resistivity of a material at 20C, expressed in percent.Results are calculated on a wei
