1、Designation: A 111 99a (Reapproved 2004)e1Standard Specification forZinc-Coated (Galvanized) “Iron” Telephone and TelegraphLine Wire1This standard is issued under the fixed designation A 111; the number immediately following the designation indicates the year oforiginal adoption or, in the case of r
2、evision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.e1NOTEEditorially changed paragraph 6.1 in May 2004.1. Scope1.1 This specification covers “iron” wire with C
3、lass A, ClassB, and Class C zinc coatings, suitable for use in telephone,telegraph, and signal transmission.1.2 The values stated in inch-pound units are to be regardedas the standard. The values given in brackets are for informa-tion only.2. Referenced Documents2.1 ASTM Standards:2A 90/A 90M Test M
4、ethod for Weight Mass of Coating onIron and Steel Articles with Zinc or Zinc-Alloy CoatingsA 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 902 Terminology Relating to Metallic Coated Steel Prod-uctsB 6 Specification for ZincB 193 Test Method for Resistivity of Electrical
5、ConductorMaterials3. Terminology3.1 DefinitionsFor definitions of terms used in this speci-fication, see Terminology A 902.4. Ordering Information4.1 Orders for wire under this specification shall include thefollowing:4.1.1 Size (in decimal fractions of an inch or millimetre),4.1.2 Grade,4.1.3 Class
6、 of zinc coating (A, B, or C),4.1.4 Mandrel test for zinc coating (as desired, mandrelsNos. 1 to 12 for Class A or as desired, mandrels Nos. 3 to 12for Classes B and C), and4.1.5 ASTM designation and year of issue.NOTE 1ExampleA typical order including the necessary informa-tion to guide the manufac
7、turer, is as follows:5000 lb of 0.109-in. Grade BB wire, Class A coating, mandrel No. 3,ASTM Specification A 111.5. Zinc for Coating5.1 The zinc used for the coating shall be any grade of zincconforming to Specification B 6.6. Base Metal6.1 The base metal shall be made by any commercially-accepted s
8、teel-making process of such quality and purity that,when processed and zinc coated, the finished wire will have theproperties prescribed in this specification for its size and grade.7. Joints7.1 The wire shall be furnished in coils of one continuouslength. Welds made prior to the final wire drawing
9、shall bepermitted.8. Sampling8.1 The inspector shall select at random during the visualexamination specified in Section 18, 1 sample coil from every10 coils in the first 100 coils of the lot, and 1 sample coil forevery additional 35 coils but not less than 3 coils from theentire lot. From each coil
10、of galvanized wire thus selected, asample of suitable length shall be taken for the weight ofcoating, the mechanical and the electrical tests as specified inSections 9-14, inclusive.9. Weight of Coating9.1 The weight of zinc coating, in ounces per square foot orgrams per square metre of uncoated wir
11、e surface, shall be notless than that specified in Table 1.1This specification is under the jurisdiction of ASTM Committee A05 onMetallic Coated Iron and Steel Products and is the direct responsibility ofSubcommittee A05.12 on Wire Specifications.Current edition approved May 1, 2004. Published June
12、2004. Originallyapproved in 1926. Last previous edition approved in 1999 as A 111 - 99a.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 Summa
13、ry page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.9.2 Weight of Coating TestThe zinc coating shall be testedfor weight by a stripping test in accordance with Test MethodA 90/A 90M.10. Adherence of Coating10.1
14、 The zinc coating shall remain adherent when the wireis wrapped at a rate of not more than 15 turns per minute in aclose helix of at least two turns around a cylindrical mandrel ofthe diameter specified. The mandrel diameter shall be approxi-mately an even multiple of the diameter of the wire tested
15、. Themandrel shall be specified by the number corresponding to thisdiameter ratio. For example, mandrel No. 1 and mandrel No.12 designate mandrel diameters respectively one and twelvetimes the wire diameter.NOTE 2The coatings on all commercially available wire manufac-tured to meet this specificatio
16、n will pass a wrap test on mandrel No. 12.Coatings are available for passing wrap tests on mandrels as small as No.1 for Class A, and No. 3 for Classes B and C. Coatings passing wrap testson mandrels of intermediate sizes may be specified.10.2 The zinc coating shall adhere firmly to the wire andshal
17、l be considered as meeting this requirement if, due towrapping about the specified mandrel, it does not flake andnone of the coating can be removed from the wire by rubbingwith the bare fingers. Loosening or detachment during theadhesion test of superficial, small particles of zinc formed bymechanic
18、al polishing of the surface of zinc-coated wire shallnot be considered cause for rejection.11. Breaking Strength11.1 The breaking strength of the galvanized wire shall notbe less than that specified in Table 2 when tested in accordancewith Test Methods and Definitions A 370.12. Elongation12.1 The el
19、ongation of the galvanized wire shall be not lessthan 10 % in 10 in. 254 mm when tested in accordance withTest Methods and Definitions A 370. The elongation shall bedetermined as the permanent increase in length after failure ofa marked section of the wire originally 10 in. 254 mm inlength.13. Ducti
20、lity13.1 The base metal of the galvanized wire of each gradeshall not fracture when the wire is wrapped at a rate of notmore than 15 turns per minute in a close helix of at least twoturns around a cylindrical mandrel of a diameter equal to thenominal diameter of the wire tested.14. Resistivity14.1 T
21、he weight resistivity of the wire expressed in ohmpound per square mile ohm gram per square metre at 68F20C shall conform to the requirements specified in Table 3.14.2 Resistivity Test The resistivity shall be determined inaccordance with Test Method B 193.15. Size and Permissible Variations15.1 Siz
22、eThe size of the galvanized wire shall be ex-pressed as the diameter of the wire in decimal fractions of aninch or millimetre.15.2 Permissible VariationsThe permissible variations ofthe galvanized wire from the nominal diameter shall be asfollows:Nominal Diameter of Wire, in. mmPermissible Variation
23、s, plus or minus,in. mm0.109 2.77 and over0.083 2.110.004 0.100.003 0.0815.3 GagingThe wire of each coil selected for purpose oftest (Section 8) shall be gaged in three places; one near eachend of the coil and one approximately at the middle. A coilshall be rejected if the diameter, at any point, is
24、 not within thelimits specified in 15.2.16. Workmanship, Finish, and Appearance16.1 The galvanized wire shall be free of splints, scales,inequalities, flaws, and other imperfections not consistent withgood commercial practice. The coating shall be continuous andreasonably uniform.17. Inspection17.1
25、The manufacturer shall afford the inspector represent-ing the purchaser all reasonable facilities, without charge, tosatisfy him that the material is being furnished in accordancewith this specification. All tests and inspection shall be made atthe place of manufacture, prior to shipment, and shall
26、be soconducted as not to interfere unnecessarily with the operationof the works.TABLE 1 Minimum Weights of Zinc CoatingNominal Diameterof Coated Wire,in. mmMinimum Weight of Zinc Coating, oz/ft2g/m2of Uncoated Wire SurfaceClass A Class B Class C0.109 2.77 and over0.083 2.110.80 2450.70 2151.60 4901.
27、40 4252.40 7302.10 640TABLE 2 Breaking Strength RequirementsNominal Diameter ofCoated Wire,in. mmSize(BirminghamWire Gage)Breaking Strength, min, lbf NGrade BB0.238 6.05 4 2 270 10 1000.203 5.16 6 1 650 7 3400.165 4.19 8 1 090 4 8500.148 3.76 9 880 3 9100.134 3.40 10 720 3 2000.120 3.05 11 575 2 560
28、0.109 2.77 12 475 2 1100.083 2.11 14 275 1 220TABLE 3 Resistivity RequirementsClass of CoatingWeight Resistivity, max, Vlb/mile2Vg/m2Grade BBA 6200 1.092B 6050 1.062C 5900 1.033A 111 99a (2004)e1218. Rejection18.1 The inspector shall visually examine the entire ship-ment of lot of coils for surface
29、imperfections. If, after visualexamination, more than 3 % of the coils in the entire lot arefound defective, the entire lot shall be subject to rejection. Ifmore than 3 % of the samples selected in accordance withSection 8 fail to pass any of the tests specified in Sections 9-15,inclusive, the entir
30、e lot shall be subject to rejection. If not morethan 3 % of the samples fail, a second set of samples,consisting of two specimens from each of the coils from whichthe original nonconforming samples were taken, shall be cutand tested for the nonconforming properties. If any of thesesamples fail, the
31、entire lot shall be subject to rejection.19. Packaging19.1 The finished wire shall be furnished in compact coilsreasonably symmetrical in shape. The diameter of the eye ofeach coil shall be not less than 17 in. 432 mm, nor more than24 in. 610 mm.19.2 The weight of wire in each coil shall conform, wi
32、thina variation of plus or minus 10 %, to the nominal valuesspecified in Table 4.19.3 Each coil shall be securely bound in four separateplaces, equally spaced, with at least two wrappings of galva-nized wire not smaller than 0.080 in. 2.0 mm in diameter. Asan alternative, coils may be securely bound
33、 in three separateplaces, equally spaced, with a zinc-coated steel strap. The steelcrimping seal used to fasten the strap shall be either zinc-coated or painted steel. For bundles with a nominal weight lessthan 100 lb 45.4 kg the steel strap shall be not less than12 in.12.7 mm wide by 0.020 in. 0.51
34、 mm thick. For bundles witha nominal weight of 100 lb 45.4 kg or more, the steel strapshall be not less than58 in. 15.9 mm wide by 0.020 in. 0.51mm thick, and each binder shall be looped around severalstrands of wire and then passed around the coil and tightened.The outer end of each coil shall be b
35、ent back over the bindingwire or strap or else tucked into the coil and shall be identifiedby an appropriate tag to facilitate locating the end.20. Marking20.1 To each coil of wire shall be securely attached adurable tag showing the size, grade, class of coating, ASTMdesignation A 111, and the name
36、or mark of the manufacturer.21. Keywords21.1 iron productszinc-coated; steel wirezinc-coated;telephone/telegraph wireASTM 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
37、advised that determination of the validity of any such patent rights, and the riskof infringement 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, eit
38、her reapproved or withdrawn. Your comments are invited either for revision of this standard 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
39、. If you feel that your comments have not received a fair hearing you shouldmake your views 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. Ind
40、ividual 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).TABLE 4 Nominal Amount of Wire in Each CoilNominal Diameterof Co
41、ated Wire,in. mmSize(BirminghamWire Gage)ApproximateLength, ft mNominal Weightof Wire in EachCoil, lb kg0.238 6.05 4 1 320 402 200 910.203 5.16 6 1 760 536 193 880.165 4.19 8 2 640 805 191 870.148 3.76 9 2 640 805 154 700.134 3.40 10 2 640 805 126 570.120 3.05 11 2 640 805 101 460.109 2.77 12 2 640 805 83 380.083 2.11 14 2 640 805 48 22A 111 99a (2004)e13
