1、Designation: B943 09Standard Specification forZinc and Tin Alloy Wire Used in Thermal Spraying forElectronic Applications1This standard is issued under the fixed designation B943; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、 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. Scope*1.1 This specification covers zinc and tin alloy wire, includ-ing zinc-aluminum, zinc-aluminum-copper, zinc-tin,
3、 zinc-tin-copper and tin-zinc, used as thermal spray wire in the elec-tronics industry.1.1.1 Certain alloys specified in this standard are also usedas solders for the purpose of joining together two or moremetals at temperatures below their melting points, and for otherpurposes (as noted in Annex A1
4、). Specification B907 coversZinc, Tin and Cadmium BaseAlloys Used as Solders which areused primarily for the purpose of joining together two or moremetals at temperatures below their melting points and for otherpurposes (as noted in the Annex part of Specification B907).Specification B833 covers Zin
5、c and Zinc Alloy Wire forThermal Spraying (Metallizing) used primarily for the corro-sion protection of steel (as noted in the Annex part ofSpecification B833).1.1.2 Tin base alloys are included in this specificationbecause their use in the electronics industry is similar to the useof certain zinc a
6、lloys but different than the major use of the tinand lead solder compositions specified in Specification B32.1.1.3 These wire alloys have a nominal liquidus temperaturenot exceeding 850F (455C).1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses a
7、re mathematicalconversions to SI units that are provided for information onlyand are not considered 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 become familiarwith all hazar
8、ds including those identified in the appropriateMaterial Safety Data Sheet (MSDS) for this product/materialas provided by the manufacturer, to establish appropriatesafety and health practices, and determine the applicability ofregulatory limitations prior to use.2. Referenced Documents2.1 ASTM Stand
9、ards:2B32 Specification for Solder MetalB833 Specification for Zinc and Zinc Alloy Wire for Ther-mal Spraying (Metallizing) for the Corrosion Protection ofSteelB899 Terminology Relating to Non-ferrous Metals andAlloysB907 Specification for Zinc, Tin and Cadmium Base AlloysUsed as SoldersE29 Practice
10、 for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE46 Test Methods for Chemical Analysis of Lead andTin-Base Solder3E51 Method for Spectrographic Analysis of Tin Alloys bythe Powder Technique3E87 Methods for Chemical Analysis of Lead, Tin, Anti-mony, and Their All
11、oys (Photometry Method)3B527 Test Method for Determination of Tap Density ofMetallic Powders and CompoundsE536 Test Methods for Chemical Analysis of Zinc and ZincAlloys2.2 Federal Standard:4Fed. Std. No. 123 Marking for Shipment (Civil Agencies)2.3 ISO Standards:5ISO 3815-1 Zinc and zinc alloys Part
12、 1:Analysis of solidsamples by optical emission spectrometry1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.04 on Zinc and Cadmium.Current edition approved Oct. 1, 2009. Published November 2009. Or
13、iginallyapproved in 2005. Last previous edition approved in 2005 as B943 - 05. DOI:10.1520/B0943-09.2For 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 Do
14、cument Summary page onthe ASTM website.3Withdrawn.4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.5Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York
15、, NY 10036, http:/www.ansi.org.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ISO 3815-2 Zinc and zinc alloys Part 2: Analysis byinductively coupled plasma optical em
16、ission spectrometry2.4 Military Standard:4MIL-STD-129 Marking for Shipment and Storage3. Terminology3.1 Terms shall be defined in accordance with TerminologyB899.4. Classification4.1 Type DesignationThe type designation uses the fol-lowing symbols to properly identify the material:4.1.1 Alloy Compos
17、itionThe composition is identified bya two or four-letter symbol and a number. The letters typicallyindicate the chemical symbol for the critical element(s) in thewire and the number indicates the nominal percentage, byweight, of the primary element in the wire (see Table 1).5. Ordering Information5
18、.1 Orders for material under this specification indicate thefollowing information, as required, to adequately describe thedesired material.5.1.1 Type designation (see 4.1),5.1.2 Detailed requirements for special forms,5.1.3 Dimensions of wire (see 9.2),5.1.4 Unit weight,5.1.5 Packaging (see Section
19、17),5.1.6 Marking (see Section 16),5.1.7 ASTM Specification number and issue, marked on (a)purchase order and (b) package or spool, and5.1.8 Special requirements, as agreed upon between sup-plier and purchaser.6. Materials and Manufacture6.1 The producer shall have each lot of wire as uniform inqual
20、ity as practicable and of satisfactory appearance in accor-dance with best industrial practices.7. Chemical Composition7.1 The wire shall conform to the requirements prescribedin Table 1.7.2 The manufacturer shall perform chemical analyses asdirected in Test Methods E536 or by other methods of at le
21、astequal accuracy to confirm that the wire conforms to therequirements of composition. In case of dispute, analysis byTest Methods E536 shall be accepted. Analysis of alloy wiresnot covered by Test Methods E536 shall be agreed uponbetween the manufacturer and the purchaser.NOTE 1By mutual agreement
22、between supplier and purchaser, analy-sis may be required and limits established for elements or compounds notspecified in Table 1.8. Dimensions and Unit Weight8.1 The dimensions and unit weight of wire are specified in5.1.3 and 5.1.4. The tolerance on specified outside diametershall be 65%or60.002
23、in. (0.05 mm), whichever is greater.9. Workmanship, Finish and Appearance9.1 The wire shall be clean and free of corrosion, adheringforeign material, scale, seams, nicks, burrs, and other defectswhich would interfere with the operation of thermal sprayingequipment. The wire shall uncoil readily and
24、be free of bendsor kinks that would prevent its passage through the thermalspray gun.9.2 The wire shall be a continuous length per spool, coil, ordrum. Splices or welds are permitted, provided that they do notinterfere with the thermal spray equipment or coating process.9.3 The starting end of each
25、coil shall be tagged to indicatewinding direction and to be readily identifiable with ASTMdesignation.10. Sampling10.1 Sampling methodology should ensure that the sampleselected for testing is representative of the material. Themethod for sampling consists of one of the following methods:10.1.1 Anal
26、ysis may be performed on finished wire, onmaterial selected when the wire is cast, or on samples takenfrom semi-finished wire.10.1.1.1 If the analysis is performed on finished wire, thefrequency of sampling for determination of chemical compo-sition shall be in accordance with Table 2. For spools an
27、d coils,TABLE 1 Zinc and Zinc Alloy Wire CompositionsComposition %A,B,CTemperatureFCFC UNSDCd Zn Sn Pb Sb Ag Cu Al Bi As Fe Ni Mg Solidus LiquidusZn 98 Z30402 0.005 REM 0.003 0.005 0.10 0.015 0.005 1.52.5 0.02 0.002 0.02 0.005 0.02 720 382 770 410Zn 96 XXXXE0.005 REM 0.003 0.005 0.10 0.015 0.005 3.5
28、4.5 0.02 0.002 0.02 0.005 0.02 720 382 720 382Zn 95 Z30502 0.005 REM 0.003 0.005 0.10 0.015 0.005 4.55.5 0.02 0.002 0.02 0.005 0.02 720 382 720 382Zn 94 XXXXE0.005 REM 0.003 0.005 0.10 0.015 1.31.5 3.54.5 0.02 0.002 0.02 0.005 0.02 730 388 734 390Zn 87 Z30705 0.005 REM 0.003 0.005 0.10 0.015 0.005 1
29、2.513.5 0.02 0.002 0.05 0.005 0.02 720 382 815 435Zn 85 Z30702 0.005 REM 0.003 0.005 0.10 0.015 0.005 14.016.0 0.02 0.002 0.06 0.005 0.02 720 382 842 450Zn/Sn 50 Z56900 0.005 REM 49.051.0 0.05 0.10 0.015 0.005 0.100 0.02 0.002 0.02 0.005 0.02 388 198 680 360Zn/Sn 49 Z56930 0.005 REM 47.550.5 0.05 0.
30、10 0.015 0.81.3 0.100 0.02 0.002 0.02 0.005 0.05 392 200 592 311Sn/Zn 60 XXXXE0.005 REM 59.061.0 0.005 0.10 0.015 0.01 0.100 0.005 0.002 0.02 0.005 0.05 390 199 666 352Sn/Zn 70 XXXXE0.005 REM 69.071.0 0.005 0.10 0.015 0.01 0.100 0.005 0.002 0.02 0.005 0.05 390 199 601 316Sn/Zn 75 XXXXE0.004 REM 74.0
31、76.0 0.20 0.10 0.015 0.05 0.050 0.020 0.020 0.02 0.005 0.05 390 199 572 300Sn/Zn 80 XXXXE0.005 REM 79.081.0 0.05 0.10 0.015 0.01 0.100 0.005 0.002 0.02 0.005 0.05 390 199 536 280AFor purposes of acceptance and rejection, the observed value or calculated value obtained from analysis should be rounded
32、 to the nearest unit in the last right-handplace of figures, used in expressing the specified limit, in accordance with the rounding procedure prescribed in Practice E29.BAll values not given as a range are maximum values unless stated otherwise.CRemainder (REM) determined arithmetically by differen
33、ce.DThe USN designations were established in accordance with Practice B527. The last digit of a UNS number differentiates between alloys of similar composition.EUNS numbers to be added when assigned.B943 092the sample is obtained by cutting back 6 ft (1.8 m) of wire fromthe free end and then taking
34、the next 6 ft for test. In otherforms, an equivalent sample is selected at random from thecontainer.10.1.1.2 If the analysis is performed on material selectedwhile the wire is being cast, at least one sample shall beselected for each source of molten metal.10.1.1.3 If the analysis is performed on sa
35、mples taken fromsemi-finished product, at least one sample shall be analyzed foreach 10 000 lb (4500 kg) or fraction thereof.10.2 The manufacturer shall determine the diameter of thewire at the end and the beginning of each continuous wire in aproduction pack, coil, or spool of wire. Each determinat
36、ionshall be the result of at least three measurements.10.3 The buyer reserves the right to reject wire that, duringuse, is found to be defective.11. Specimen Preparation11.1 Each sample of wire is prepared in accordance withSection 10 as applicable.12. Test Methods12.1 Visual and Dimensional Examina
37、tion:12.1.1 The wire must be examined to verify that thedimensions, unit weight, and workmanship are in accordancewith the applicable requirements.12.2 Alloy CompositionIn case of dispute, the chemicalanalysis is made in accordance with Test Methods E46, E51,E87, E536, ISO 3815-1,orISO 3815-2.13. In
38、spection13.1 When specified in the purchase order or contract, thepurchaser shall be furnished certification that samples repre-senting each lot have been tested or inspected as directed in thisspecification and the requirements have been met. Whenspecified in the purchase order to contract, a repor
39、t of the testresults shall be furnished.13.2 An inspection lot shall be defined as a collection ofmaterial of the same kind that has been produced to the samespecification from the same heat by a single supplier at onetime under essentially identical conditions and that are submit-ted for acceptance
40、 or retest as a group.14. Rejection and Rehearing14.1 Material that fails to conform to the requirements ofthis specification may be rejected. Rejection must be reportedto the producer or supplier promptly and in writing. In case ofdissatisfaction with the results of the test, the producer orsupplie
41、r may make claim for a rehearing.15. Certification15.1 When specified in the purchase order or contract aproducers certification must be furnished to the purchaser thatthe material was manufactured, sampled, tested, and inspectedin accordance with this specification and has been found tomeet the req
42、uirements. When specified in the purchase order orcontract, a report of the test results must be furnished.16. Product Marking16.1 Each spool or container must be marked to show thespecification number, type designation, dimensions, and unitweight of wire or other form and lot number. The producersn
43、ame or trademark must be marked on the spool or container.17. Packaging and Package Marking17.1 The material shall be separated by size and preparedfor shipment in such a matter as to ensure acceptance bycommon carrier and to afford protection from the normalhazards of transport.17.2 Packaging mater
44、ials for electric arc spray wire shall benonconductive.17.3 Size(s) of Packaging:17.3.1 Coil inside diameter may range from 12 to 22 in. (30to 56 cm).17.3.2 Coil weight shall be approximately 45 to 55 lb (20 to25 kg).17.3.3 Production pack drums shall measure approximately22 in. (56 cm ) in diameter
45、 and approximately 32 in. (81 cm)high. Each drum shall contain a continuous wire, which iscoiled around a central core.17.3.4 Net weight per drum shall be 450 to 550 lb (205 to250 kg).17.3.5 When special preservation, packaging and packingrequirements are agreed upon between purchaser and supplier,m
46、arking for shipment of such material must be in accordancewith Fed. Std. No. 123 for civil agencies and MIL-STD-129 formilitary agencies.17.4 Each shipping unit shall be legibly marked with thepurchase order number, size, gross, tare, net weights, and thename of the supplier. The specification numbe
47、r shall be shownwhen required.18. Keywords18.1 electronic applications; thermal spray; tin-zinc alloys;wire; zinc-aluminum alloys; zinc-aluminum-copper alloy;zinc-tin-copper alloy; zinc-tin alloyTABLE 2 Frequency of SamplingSize of Lot,lb (kg)Number of Samples(spools, coils, containers or pieces)Up
48、to 1000 (450), incl 3Over 1000 to 10 000 (450 to 4500), incl 5Over 10 000 (4500) 10B943 093SUPPLEMENTARY REQUIREMENTSThe following supplementary requirements apply for all agencies of the United States Governmentor only when specified by the purchaser as part of the purchase order or contract.S1. Re
49、sponsibility for InspectionS1.1 The producer or supplier shall be responsible for theperformance of all inspection requirements as specified herein.Except as otherwise specified in the contract or order, thesupplier may use his own or any other facilities suitable for theperformance of the inspection requirements specified hereinunless disapproved by the purchaser. The purchaser retains theright to perform any of the inspections and tests set forth in thisspecification, where such inspections and tests are deemednecessary, to ensure that the supplies and
