1、Designation:B90716Standard Specification forZinc,Tin and Cadmium Base Alloys Used as Solders1This standard is issued under the fixed designation B907;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number
2、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 solder metal alloys(commonlyknown as soft solders),including zinc-aluminum,zinc-aluminum-copper,zinc-tin,zinc-tin-coppe
3、r,zinc-cadmium-tin,zinc-cadmium,tin-zinc,cadmium-zinc,cadmium-zinc-silver,and cadmium-silver,used as solders for the purpose of joiningtogether two or more metals at temperatures below theirmelting points.1.1.1 Certain alloys specified in this standard are also usedas Thermal Spray Wire in the elect
4、ronics industry and arecovered for this purpose in Specification B943.SpecificationB833 covers Zinc and Zinc Alloy Wire for Thermal Spraying(Metallizing)used primarily for the corrosion protection ofsteel(as noted in Annex A1 of this specification).1.1.2 Tin base alloys are included in this specific
5、ationbecause their use in the electronics industry is different than themajor use of the tin and lead solder compositions specified inSpecification B32.1.1.3 These solders include alloys having a nominal liqui-dus temperature not exceeding 850F(455C).1.1.4 This specification includes solder in the f
6、orm of solidbars,ingots,wire,powder and special forms,and in the form ofsolder paste.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
7、.3 ToxicityWarning:Soluble and respirable forms ofcadmium may be harmful to human health and the environmentin certain forms and concentrations.Therefore,ingestion andinhalation of cadmium should be controlled under the appro-priate regulations of the U.S.Occupational Safety and HealthAdministration
8、(OSHA).Cadmium-containing alloys and coat-ings should not be used on articles that will contact food orbeverages,or for dental and other equipment that is normallyinserted in the mouth.Similarly,if articles using cadmium-containing alloys or coatings are welded,soldered,brazed,ground,flame-cut,or ot
9、herwise heated during fabrication,adequate ventilation must be provided to maintain occupationalcadmium exposure below the OSHA Permissible ExposureLevel(PEL).1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of
10、 this standard to become familiarwith all hazards including those identified in the appropriateSafety Data Sheet(SDS)for this product/material as providedby the manufacturer,to establish appropriate safety and healthpractices,and determine the applicability of regulatory limi-tations prior to use.2.
11、Referenced Documents2.1 ASTM Standards: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 and Al-loysB943 Specification for Zinc and Tin Alloy Wire Us
12、ed inThermal Spraying for Electronic ApplicationsB949 Specification for General Requirements for Zinc andZinc Alloy ProductsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE46 Test Methods for Chemical Analysis of Lead-andTin-Base Solder(Withdrawn 19
13、94)3E51 Method for Spectrographic Analysis of Tin Alloys bythe Powder Technique(Withdrawn 1983)3E55 Practice for Sampling Wrought Nonferrous Metals andAlloys for Determination of Chemical CompositionE87 Methods for ChemicalAnalysis of Lead,Tin,Antimonyand Their Alloys(Photometric Method)(Withdrawn19
14、83)3E88 Practice for Sampling Nonferrous Metals and Alloys in1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and Alloys and is the direct responsibility ofSubcommittee B02.04 on Zinc and Cadmium.Current edition approved May 1,2016.Published July 201
15、6.Originally approvedin 2000.Last previous edition approved in 2013 as B907 13.DOI:10.1520/B0907-16.2For 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 Documen
16、t Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Cast Form for Determination of Chemical CompositionE527 Practice for Numbering Metals and Alloys in theUnified Numbering System(UNS)E536 Test Methods for Chemical Analysis of Zinc and ZincAlloys2.2 Federal S
