1、Designation: B 965 09Standard Specification forHigh Performance Tin-Coated Annealed Copper WireIntended for Electrical and Electronic Application forSolderability1This standard is issued under the fixed designation B 965; the number immediately following the designation indicates the year oforiginal
2、 adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers tin-coated annealed copperwire intended f
3、or electrical and electronic applications wheresolderability is a requirement.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.2.1 E
4、xceptionsThe SI values for density, resistivity, andvolume are to be regarded as standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practic
5、es and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B49 Specification for Copper Rod Drawing Stock forElectrical PurposesB 193 Test Method for Resistivity of Electrical ConductorMaterialsB 258 Specification for Nominal Diameters and C
6、ross-Sectional Areas of AWG Sizes of Solid Round Wires Usedas Electrical Conductors2.2 Other Standards:IPC/ECA J-STD-002 Solderability Test for ComponentLeads, Lugs, Terminals and Wires3NBS Handbook 100 Copper Wire Tables43. Ordering Information3.1 Orders for material under this specification shall
7、includethe following information:3.1.1 Quantity of each size,3.1.2 Wire size-diameter in inches (see 5.3 and Table 1),3.1.3 Type of copper, if special (see 4.2),3.1.4 Package size (see 10.1),3.1.5 Special packaging marking, if required, and3.1.6 Place of inspection (see 7.1).4. Material4.1 Tin for C
8、oatingThe tin shall be electroplated for thecoating and shall be commercially pure (Explanatory Note 1).For purposes of this specification, the tin shall be consideredcommercially pure if the total of other elements, exclusive ofcopper, does not exceed 1 %. Not withstanding the previoussentence, che
9、mical analysis of the tin coating or of the tin usedfor coating shall not be required under this specification.4.2 Copper-Base MetalThe base metal shall be copper ofsuch quality and purity that the finished product shall haveproperties and characteristics prescribed in this specification.NOTE 1Speci
10、fication B49defines copper suitable for use.5. General Requirements (See Section 8)5.1 Tensile Strength and Elongation (Explanatory Note4)The tinned wire shall conform to the requirements forelongation prescribed in Table 1. No requirements for tensilestrength are specified. For wire whose nominal d
11、iameter ismore than 0.001 in. (0.025 mm) greater than a size listed inTable 1, but less than that of the next larger size, therequirements of the next larger size shall apply.5.2 Resistivity (Explanatory Note 1 and Note 3)Theelectrical resistivity of tinned wire at a temperature of 20Cshall not exce
12、ed the values prescribed in Table 2.5.3 Dimensions and Permissible Variations (ExplanatoryNote 2)The wire sizes shall be expressed as the diameter ofthe wire in decimal fractions of an inch to the nearest 0.0001 in.1This test method is under the jurisdiction of ASTM Committee B01 onElectrical Conduc
13、tors and is the direct responsibility of Subcommittee B01.04 onConductors of Copper and Copper Alloys.Current edition approved April 1, 2009. Published May 2009.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book o
14、f ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from IPC, 3000 Lakeside Drive, Suite 309S, Bannockburn, IL 60015,and ECA 2500 Wilson Blvd., Arlington, VA 22201.4Available from National Technical Information Service (NTIS), 5285 PortRoyal
15、 Rd., Springfield, VA 22161, http:/www.ntis.gov.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.(0.0025 mm). The tin-coated wire shall not vary from thespecified diameter by more than the amounts prescribed inTable 3.5.4 Continuity o
16、f CoatingThe tin coating shall be con-tinuous. The continuity of coating on the wire shall bedetermined on representative samples taken before stranding orinsulating. The continuity of tinning shall be determined by thehydrochloric acid-sodium polysulfide test in accordance with6.4.5.5 Thickness of
17、CoatingThe wire shall have adequatefree tin (Explanatory Note 1) to insure meeting solderabilityrequirements as prescribed in 5.8. The thickness of coatingshall be at the manufacturers discretion or as agreed uponbetween the manufacturer and purchaser to insure complianceto 5.8 and further processin
18、g for solderability performanceafter insulation.5.6 Adherence of CoatingThe tin coating shall be firmlyadherent to the surface of the copper. The adherence of coatingon the wire shall be determined on representative samplestaken after electroplating and prior to final drawing. Theadherence of coatin
19、g shall be determined by the wrapping testin accordance with 6.6.5.7 JointsNecessary joints in the completed wire and inthe wire and rods prior to final drawing shall be made inaccordance with the best commercial practice.5.8 SolderabilityThe solder must cover greater than 95 %of the surface of the
20、specimen and show evidence of goodwetting and of bonding. The solderability shall be tested inaccordance with 6.7.5.9 FinishThe coating shall consist of a smooth continu-ous layer, firmly adherent to the surface of the copper. The wireshall be free of all imperfections not consistent with the bestco
21、mmercial practice.6. Test Methods6.1 Tensile Strength and Elongation (Explanatory Note 4)6.1.1 No test for tensile strength shall be required.6.1.2 The elongation of wire with a nominal diametergreater than 0.0808 in. (2.052 mm) shall be determined as thepermanent increase in length due to the break
22、ing of the wire intension. The elongation shall be measured between gage marksplaced originally 10 in. (242 mm) apart upon the test specimenand expressed in percent of the original length.6.1.3 The elongation of wire with a nominal diameter equalto or less than 0.0808 in. (2.053 mm) may be determine
23、d asdescribed above or by measurements made between the jaws ofthe testing machine. When measurements are made betweenthe jaws, the zero length shall be the distance between the jawsat the start of the tension test and be as near 10 in. (254 mm)as practicable. The final length shall be the distance
24、betweenthe jaws at the time of rupture. The fracture shall be betweengage marks or jaws of the testing machine, depending onmethod used, and not closer than 1 in. (25.4 mm) to either gagemark or jaw.TABLE 1 Tensile RequirementsDiameter Area at 20C Elongation in10 in. (250 mm),%minin. mm cmil in.2mm2
25、0.4600 11.684 211 600 0.1662 107.0 300.4096 10.404 167 800 0.1318 85.0 300.3648 9.266 133 100 0.1045 67.4 300.3249 8.252 105 600 0.08291 53.5 300.2893 7.348 83 690 0.06573 42.4 250.2576 6.543 66 360 0.05212 33.6 250.2294 5.827 52 620 0.04133 26.7 250.2043 5.189 41 740 0.03278 21.2 250.1819 4.620 33
26、090 0.02599 16.8 250.1620 4.115 26 240 0.02061 13.3 250.1443 3.665 20 820 0.01635 10.5 250.1285 3.264 16 510 0.01297 8.37 250.1144 2.906 13 090 0.01028 6.63 250.1019 2.588 10 380 0.008155 5.26 200.0907 2.304 8 230 0.00646 4.17 200.0808 2.052 6 530 0.00513 3.31 200.0720 1.829 5 180 0.00407 2.63 200.0
27、641 1.628 4 110 0.00323 2.08 200.0571 1.450 3 260 0.00256 1.65 200.0508 1.290 2 580 0.00203 1.31 200.0453 1.151 2 050 0.00161 1.04 200.0403 1.024 1 620 0.00128 0.823 200.0359 0.912 1 290 0.00101 0.654 200.0320 0.813 1 020 0.000804 0.517 200.0285 0.724 812 0.000638 0.411 200.0253 0.643 640 0.000503 0
28、.324 200.0226 0.574 511 0.000401 0.259 200.0201 0.511 404 0.000317 0.205 150.0179 0.455 320 0.000252 0.162 150.0159 0.404 253 0.000199 0.128 150.0142 0.361 202 0.000158 0.102 150.0126 0.320 159 0.000125 0.081 150.0113 0.287 128 0.000100 0.065 150.0100 0.254 100 0.0000785 0.051 100.0089 0.226 79.2 0.
29、0000622 0.040 100.0080 0.203 64.0 0.0000503 0.032 100.0071 0.180 50.4 0.0000396 0.026 100.0063 0.160 39.7 0.0000312 0.020 100.0056 0.142 31.4 0.0000246 0.016 100.0050 0.127 25.0 0.0000196 0.013 100.0045 0.114 20.2 0.0000159 0.010 100.0040 0.102 16.0 0.0000126 0.0081 100.0035 0.089 12.2 0.00000962 0.
30、0062 100.0031 0.079 9.61 0.00000755 0.0049 10TABLE 2 Electrical Resistivity RequirementsNominal Diameter Resistivity at 20Cin. mm Vlb/mile2Vg/m20.460 to 0.290, incl 11.7 to 7.4, incl 896.15 0.15695Under 0.290 to 0.103, incl Under 7.4 to 2.6, incl 900.77 0.15776Under 0.103 to 0.0201, incl Under 2.6 t
31、o 0.51, incl 910.15 0.15940Under 0.0201 to 0.0111, incl Under 0.51 to 0.28, incl 929.52 0.16279Under 0.0111 to 0.0030, incl Under 0.28 to 0.076, incl 939.51 0.16454TABLE 3 Permissible Variations in DiameterNominal Diameter of Wire Permissible Variations in Diameterin. mmin. mm plus minus plus minusU
32、nder 0.0100 Under 0.25 0.0003 0.00010 0.0076 0.00250.0100 and over 0.25 and over 3 % 1 % 3 % 1 %B9650926.2 Resistivity (Explanatory Note 3)The electrical resis-tivity of the material shall be determined in accordance withTest Method B 193. The purchaser may accept certification thatthe wire was draw
33、n from rod stock meeting the internationalstandard for annealed copper instead of resistivity tests on thefinished wire.6.3 Dimensional MeasurementsDimensional measure-ments shall be made with a micrometer caliper equipped witha vernier graduated in 0.0001 in. (0.0025 mm). Measurementsshall be made
34、on at least three places on each unit selected forthis test. If accessible, one measurement shall be taken on eachend and one near the middle. The average of the threemeasurements shall determine compliance with the require-ments.6.4 Continuity of Coating:6.4.1 Length of SpecimensTest specimens shal
35、l have alength of about 6 in. (152 mm). They shall be tagged or markedto correspond with the coil, spool, or reel from which they werecut.6.4.2 Treatment of SpecimensThe specimens shall bethoroughly cleaned by immersion in a suitable organic solventfor at least 3 min; then removed and wiped dry with
36、 a clean,soft cloth (Caution: see Explanatory Note 5). The specimensthus cleaned shall be kept wrapped in a clean, dry cloth untiltested. That part of the specimen to be immersed in the testsolution shall not be handled. Care shall be taken to avoidabrasion by the cut ends.6.4.3 Special Solutions Re
37、quired:6.4.3.1 Hydrochloric Acid Solution (HCl) (sp gr 1.088)Commercial HCl (sp gr 1.12) shall be diluted with distilledwater to a specific gravity of 1.088 measured at 15.6C (60F).A portion of HCl solution having a volume of 180 mL shall beconsidered to be exhausted when the number of test specimen
38、sprescribed in Table 4 of a size as indicated in 6.4.3 have beenimmersed in it for two cycles.6.4.3.2 Sodium Polysulfide Solution (sp gr 1.142) (Explana-tory Note 6)A concentrated solution shall be made bydissolving sodium sulfide crystals (cp) in distilled water untilthe solution is saturated at ab
39、out 21C (70F), and addingsufficient flowers of sulfur (in excess of 250 g/L of solution) toprovide complete saturation, as shown by the presence in thesolution of an excess of sulfur after the solution has beenallowed to stand for at least 24 h. The test solution shall bemade by diluting a portion o
40、f the concentrated solution withdistilled water to a specific gravity of 1.135 to 1.145 at 15.6C(60F). The sodium polysulfide test solution should havesufficient strength to blacken thoroughly a piece of cleanuntinned copper wire in 5 s. The test solution used for testingsamples shall be considered
41、exhausted if it fails to blacken apiece of clean copper as described above.6.4.4 Procedure:6.4.4.1 Immersion of SpecimensImmerse a length of atleast 4-1/2 in. (114 mm) from each of the clean specimens, inaccordance with the following cycles, in test solutions main-tained at a temperature between 15.
42、6 and 21C (60 and 70F):(1) Immerse the specimen for 1 min in the HCl solutiondescribed in 6.4.2, wash, and wipe dry; (2) immerse thespecimen for 30 s in the sodium polysulfide solution describedin 6.4.2, wash, and wipe dry; (3) immerse the specimen for 1min in the HCl solution, wash, and dry; (4) im
43、merse thespecimen for 30 s in the sodium polysulfide solution, wash, andwipe dry.6.4.4.2 Washing SpecimensAfter each immersion, imme-diately wash the specimens thoroughly in clean water and wipedry with a clean, soft cloth.6.4.4.3 Examination of SpecimensAfter immersion andwashing, examine the speci
44、mens to ascertain if copper exposedthrough openings in the tin coating has been blackened byaction of the sodium polysulfide. The specimens shall beconsidered to have failed if, by such blackening, exposedcopper is revealed. No attention shall be paid to blackeningwithin 0.5 in. (12.7 mm) of the cut
45、 end. A grayish brownappearance of the coating shall not constitute failure.6.5 Thickness of CoatingConformance to free tin require-ments may be determined in accordance with Test MethodAasprescribed in Appendix X1.6.6 Adherence of Coating:6.6.1 Specimens:6.6.1.1 Length of SpecimensTest specimens sh
46、all be ap-proximately 20 in. (508 mm) prior to wrapping and shall betagged or marked to correspond with the coil, spool, or reelfrom which they are cut.6.6.2 Procedure:6.6.2.1 WrappingSlowly wrap the test specimen in asuitable manner in an open helix around its own diameter. Takecare not to stretch
47、the specimen during the wrapping operation.The spacing of the consecutive turns shall be approximatelyequal to the diameter of the wire. An appropriate number ofwraps shall be made so that a sample no less than eight inchesin length will be obtained.6.6.2.2 Examination of SpecimensVisually examine0.
48、0428 in. (1.09 mm) and smaller test specimens at 320magnification. Test specimens larger than 0.0428 in. (1.09 mm)shall be examined at 310 magnification. Examine the outerperipheral surface of the helically wrapped portion of thespecimen. The test specimens shall be rotated 360 to examineTABLE 4 Lim
49、iting Number of Test Specimens for Coating TestsNominal Diameter Maximum Number of Specimens to be Tested for 2 Cyclesin 180 mL of Acid Solutionin. mm0.460 to 0.141, incl 11.7 to 3.6, incl 2Under 0.141 to 0.0851, incl Under 3.6 to 2.2, incl 4Under 0.0851 to 0.0501, incl Under 2.2 to 1.3, incl 6Under 0.0501 to 0.0381, incl Under 1.3 to 0.97, incl 10Under 0.0381 to 0.0301, incl Under 0.97 to 0.76, incl 12Under 0.0301 to 0.0030, incl Under 0.76 to 0.076, incl 14B965093both the inside and outside of the helix for surfaceimperfections/defects.6.6.2
