1、Designation: B907 09B907 13Standard 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 revis
2、ion. 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 solder metal alloys (commonly known as soft solders), including zinc-aluminum, zinc-aluminum-copper,
3、zinc-tin, zinc-tin-copper, zinc-cadmium-tin, zinc-cadmium, tin-zinc, cadmium-zinc, cadmium-zinc-silver, and cadmium-silver, used as solders for the purpose of joining together two or more metals at temperatures below their melting points.1.1.1 Certain alloys specified in this standard are also used
4、as Thermal Spray Wire in the electronics industry and are coveredfor this purpose in Specification B943. Specification B833 covers Zinc and Zinc Alloy Wire for Thermal Spraying (Metallizing)used primarily for the corrosion protection of steel (as noted in Annex A1 of this specification).1.1.2 Tin ba
5、se alloys are included in this specification because their use in the electronics industry is different than the majoruse of the tin and lead solder compositions specified in Specification B32.1.1.3 These solders include alloys having a nominal liquidus temperature not exceeding 850F (455C).1.1.4 Th
6、is specification includes solder in the form of solid bars, ingots, wire, powder and special forms, and in the form ofsolder paste.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for i
7、nformation only and are not considered standard.1.3 ToxicityWarning: Soluble and respirable forms of cadmium may be harmful to human health and the environment incertain forms and concentrations. Therefore, ingestion and inhalation of cadmium should be controlled under the appropriateregulations of
8、the U.S. Occupational Safety and Health Administration (OSHA). Cadmium-containing alloys and coatings shouldnot be used on articles that will contact food or beverages, or for dental and other equipment that is normally inserted in the mouth.Similarly, if articles using cadmium-containing alloys or
9、coatings are welded, soldered, brazed, ground, flame-cut, or otherwiseheated during fabrication, adequate ventilation must be provided to maintain occupational cadmium exposure below the OSHAPermissible Exposure Level (PEL).1.4 This standard does not purport to address all of the safety concerns, if
10、 any, associated with its use. It is the responsibilityof the user of this standard to become familiar with all hazards including those identified in the appropriate Material Safety DataSheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health
11、 practices, anddetermine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B32 Specification for Solder MetalB833 Specification for Zinc and Zinc Alloy Wire for Thermal Spraying (Metallizing) for the Corrosion Protection of SteelB899 Terminology Rela
12、ting to Non-ferrous Metals and AlloysB943 Specification for Zinc and Tin Alloy Wire Used in Thermal Spraying for Electronic ApplicationsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE46 Test Methods for Chemical Analysis of Lead- and Tin-Base Sold
13、er (Withdrawn 1994)3E51 Method for Spectrographic Analysis of Tin Alloys by the Powder Technique (Withdrawn 1983)3E55 Practice for Sampling Wrought Nonferrous Metals and Alloys for Determination of Chemical Composition1 This specification is under the jurisdiction ofASTM Committee B02 on Nonferrous
14、Metals andAlloys andAlloys and is the direct responsibility of Subcommittee B02.04on Zinc and Cadmium.Current edition approved Oct. 1, 2009Feb. 1, 2013. Published November 2009March 2013. Originally approved in 2000. Last previous edition approved in 20052009 asB907 05.B907 09. DOI: 10.1520/B0907-09
15、. 10.1520/B0907-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 The last approved version of this histor
16、ical standard is referenced on www.astm.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately,
17、ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive,
18、PO Box C700, West Conshohocken, PA 19428-2959. United States1E87 Methods for Chemical Analysis of Lead, Tin, Antimony and Their Alloys (Photometric Method) (Withdrawn 1983)3E88 Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical CompositionE527 Practice for
19、Numbering Metals and Alloys in the Unified Numbering System (UNS)E536 Test Methods for Chemical Analysis of Zinc and Zinc Alloys2.2 Federal Standard:4Fed. Std. No. 123 Marking for Shipment (Civil Agencies)2.3 ISO Standards:5ISO 3815-1 Zinc and zinc alloys Part 1: Analysis of solid samples by optical
20、 emission spectrometryISO 3815-2 Zinc and zinc alloys Part 2: Analysis by inductively coupled plasma optical emission spectrometry2.4 Military Standard:4Mil-Std-129 Marking for Shipment and Storage3. Terminology3.1 Terms shall be defined in accordance with Terminology B899.4. Classification4.1 Type
21、DesignationThe type designation uses the following symbols to properly identify the material:4.1.1 Alloy CompositionThe composition is identified by a two or four-letter symbol and a number. The letters typicallyindicate the chemical symbol for the critical element in the solder and the number indic
22、ates the nominal percentage, by weight,of the critical element in the solder (see Table 1).4.1.2 FormThe form is indicated by a single letter in accordance with Table 2.4.1.3 Powder Mesh Size (applicable only to solder paste)The powder mesh size is identified by a single letter in accordancewith Tab
23、le 3.5. Ordering Information5.1 Orders for material under this specification indicate the following 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 ribbon and wire solder (see 9.2)
24、,5.1.4 Unit weight,5.1.5 Packaging (see Section 18),5.1.6 Marking (see Section 17),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 supplier and purchaser.6. Materials and Manufacture6.1 The produc
25、er shall have each lot of solder metal as uniform in quality as practicable and of satisfactory appearance inaccordance with best industrial practices. Each bar, ingot, or other form in which the solder is sold must be uniform in compositionwith the entire lot.7. Chemical Composition7.1 Solder Alloy
26、The solder alloy composition is as specified in Table 1.NOTE 1By mutual agreement between supplier and purchaser, analysis may be required and limits established for elements or compounds notspecified in Table 4.8. Physical Properties and Performance Requirements8.1 Solder PasteSolder paste must exh
27、ibit smoothness of texture (no lumps) and the absence of caking and drying duringstorage and application. Some applications may require a fast drying formulation.8.1.1 Powder Mesh SizeThe solder powder mesh size shall be as specified (see Section 4.1.3) when the extracted solderpowder is tested as a
28、greed upon between supplier and purchaser.8.1.2 ViscosityThe viscosity of solder paste and the method used to determine the viscosity must be agreed upon between thesupplier and the purchaser.4 Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philade
29、lphia, PA 19111-5098, http:/www.dodssp.daps.mil.5 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.B907 1328.2 The following variables must be taken into account when relating one viscosity measurement to another: type of
30、viscometerused, spindle size and shape, speed (r/min), temperature and the recent mixing history of the sample, and the use or non-use ofa helipath.TABLE 1 Solder CompositionsTable 1a: Zinc Base AlloysComposition %A,B,C TemperatureUNSD Cd Zn Sn Pb Sb Ag Cu Al Bi As Fe Ni Mg Solidus LiquidusF C F CZn
31、 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 97 Z30505 0.005 REM 0.003 0.005 0.10 0.015 0.005 2.53.5 0.02 0.002 0.02 0.005 0.02 720 382 743 395Zn 96 E 0.005 REM 0.003 0.005 0.10 0.015 0.005 3.54.5 0.02 0.002 0.02 0.005 0.02 720 382 720 382Zn 9
32、6 Z30506 0.005 REM 0.003 0.005 0.10 0.015 0.005 3.54.5 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 E 0.005 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 94
33、 Z34530 0.005 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 90 Z34550 0.004 88.092.0 0.003 0.005 0.10 0.015 3.06.0 3.06.0 0.02 0.002 0.100 0.005 0.05 720 382 797 425Zn 87 Z30705 0.005 REM 0.003 0.005 0.10 0.015 0.005 12.513.5 0.02 0.002 0.05 0.005 0.02 720 382
34、 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 80 Z30800 0.005 REM 0.003 0.005 0.10 0.015 0.005 19.520.5 0.02 0.002 0.08 0.005 0.02 720 382 896 480Zn/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
35、.02 388 198 680 360Zn/Sn 49 Z56930 0.005 REM 47.550.5 0.05 0.10 0.015 0.81.3 0.100 0.02 0.002 0.02 0.005 0.05 392 200 592 311Zn/Sn 27F E 33.0 26.028.0 REM 0.05 0.10 0.015 0.05 0.050 0.02 0.020 0.02 0.005 0.05 351 177 500 260Zn/Sn 27E Z13371 33.0 26.028.0 REM 0.05 0.10 0.015 0.05 0.050 0.02 0.020 0.0
36、2 0.005 0.05 351 177 500 260Zn/Cd 90F Z50940 REM 89.091.0 0.003 0.05 0.10 0.015 0.05 0.100 0.02 0.002 0.02 0.005 0.05 509 265 738 392Zn/Cd 90E Z50940 REM 89.091.0 0.003 0.05 0.10 0.015 0.05 0.100 0.02 0.002 0.02 0.005 0.05 509 265 738 392Zn/Cd 60F Z50980 REM 59.061.0 0.003 0.05 0.10 0.015 0.05 0.100
37、 0.02 0.002 0.02 0.005 0.05 509 265 648 342Zn/Cd 60E Z50980 REM 59.061.0 0.003 0.05 0.10 0.015 0.05 0.100 0.02 0.002 0.02 0.005 0.05 509 265 648 342Table 1b: Tin Base AlloysComposition %A,B,C TemperatureUNSE Cd Zn Sn Pb Sb Ag Cu Al Bi As Fe Ni Mg Solidus LiquidusUNS Cd Zn Sn Pb Sb Ag Cu Al Bi As Fe
38、Ni Mg Solidus LiquidusF C F CSn/Zn 60 L13281 0.005 REM 59.061.0 0.05 0.10 0.015 0.01 0.100 0.005 0.002 0.02 0.005 0.05 390 199 666 352Sn/Zn 70 L13271 0.005 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 L13261 0.004 REM 74.076.0 0.20 0.10 0.015 0.05 0.05
39、0 0.020 0.020 0.02 0.005 0.05 390 199 572 300Sn/Zn 80 L13251 0.005 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 280Sn/Zn 91 L13241 0.005 REM 90.092.0 0.05 0.10 0.015 0.01 0.100 0.005 0.002 0.02 0.005 0.05 390 199 390 199Table 1c: Cadmium Base AlloysComposition %A,B
40、,C TemperatureUNSE Cd Zn Sn Pb Sb Ag Cu Al Bi As Fe Ni Mg Solidus LiquidusUNS Cd Zn Sn Pb Sb Ag Cu Al Bi As Fe Ni Mg Solidus LiquidusF C F CCd 60 L01181 REM 39.041.0 0.003 0.05 0.10 0.015 0.05 0.100 0.02 0.002 0.02 0.005 0.05 509 265 601 316Cd 70 L01171 REM 29.031.0 0.003 0.05 0.10 0.015 0.05 0.100
41、0.02 0.002 0.02 0.005 0.05 509 265 572 300Cd 78 L01255 REM 11.013.0 0.003 0.05 0.10 4.55.5 0.05 0.100 0.02 0.002 0.02 0.005 0.05 480 249 601 316Cd 83 L01161 REM 16.018.0 0.003 0.05 0.10 0.015 0.05 0.100 0.02 0.002 0.02 0.005 0.05 509 265 509 265Cd 95 L01331 REM 0.007 0.003 0.05 0.10 4.55.5 0.05 0.10
42、0 0.02 0.002 0.02 0.005 0.05 640 338 739 393A For purposes of acceptance and rejection, the observed value or calculated value obtained from analysis should be rounded to the nearest unit in the last right-handplace of figures, used in expressing the specified limit, in accordance with the rounding
43、procedure prescribed in Practice E29.B All values not given as a range are maximum values unless stated otherwise.C Remainder (REM) determined arithmetically by difference.D The USN designations were established in accordance with Practice E527. The last digit of a UNS number differentiates between
44、alloys of similar composition.E UNS numbers to be added when assigned.E These alloys are listed with the zinc base alloys even though they contain significant amounts of cadmium because their use is similar to those of the other alloys inTable 1A.TABLE 2 FormSymbol FormB BarI IngotP PowderR RibbonS
45、SpecialAW WireA Includes pellets, preforms, etc.B907 1339. Dimensions and Unit Weight9.1 Bar and Ingot SolderThe dimensions and unit weight of bar and ingot solder will be as agreed upon between supplier andpurchaser.9.2 Wire SolderThe dimensions and unit weight of wire solder are specified in 5.135
46、.1.3 and 5.1.45.14 The tolerance onspecified outside diameter shall be 6 5 % or 6 0.002 65 % or 60.002 in. (0.05 mm), whichever is greater.9.3 Other forms:9.3.1 Dimension for ribbon and special forms will be agreed upon between supplier and purchaser.9.3.2 The unit weight of solder paste is specifie
47、d in 5.1.4.10. Workmanship, Finish, and Appearance10.1 All forms of solder must be processed in such a manner as to be uniform in quality and free of defects that will affect life,serviceability, or appearance.11. Sampling11.1 Care must be taken to ensure that the sample selected for testing is repr
48、esentative of the material. The method for samplingconsists of one of the following methods:11.1.1 Samples taken from the final solidified cast of fabricated product.11.1.2 Representative samples obtained from the lot of molten metal during casting. The molten sample is poured into a coolmold, formi
49、ng a bar approximately 14 inin. (6.4 mm) thick.11.2 Frequency of SamplingFrequency of sampling for determination of chemical composition shall be in accordance withTable 4. For spools and coils, the sample is obtained by cutting back 6 ft (1.8 m) of wire from the free end and then taking thenext 6 ft for test. In other forms, an equivalent sample is selected at random from the container.11.3 Other aspects of SamplingOther aspects of sampling conforms in the case of bar and ingots, to Practice E88. Forfabricated solders
