ASTM_F_106_-_12.pdf

Designation:F10612Standard Specification forBrazing Filler Metals for Electron Devices1This standard is issued under the fixed designation F106;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers requirements or filler metalssuitable for brazing internal parts and other critical areas ofelectron devices in a nonoxidizing atmosphere(Note 1).1.2 These materials are available in strip or wire or preformsmade by blanking the strip or bending the wire.Powders arealso available.NOTE1Brazing filler metals for general applications are specified inAWS Specification A 5.8.1.3 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.2.Referenced Documents2.1 ASTM Standards:2B214 Test Method for Sieve Analysis of Metal PowdersE11 Specification for Woven Wire Test Sieve Cloth and TestSievesF19 Test Method for Tension and Vacuum Testing Metal-lized Ceramic Seals2.2 American Welding Society:3A 5.8 Specification for Brazing Filler MetalsC 3.2 Method for Evaluating the Strength of Brazed JointsC 3.3 Recommended Practices for Design,Manufacture andInspection of Critical Brazed Components3.Classification3.1 Brazing filler metals which are vacuum grade and areclassified on the basis of chemical composition shown in Table1.The difference between Grade 1 and 2 is the allowableimpurity content.Grade 1 requires generally lower levels ofimpurities.4.Ordering Information4.1 Orders for material to this specification shall include thefollowing information:4.1.1 Quantity,4.1.2 Dimensions and tolerances(Table 2),4.1.3 Form(rod,bar,wire,etc.),4.1.4 AWS classification(Table 1),4.1.5 Grade 1,4.1.6 Special requirements or exceptions,and4.1.7 Certification State if certification is required.5.Materials and Manufacture5.1 The brazing filler metals shall be vacuum grade andfabricated by any method that yields a product conforming tothe requirements of this specification.6.Chemical Composition6.1 The finished brazing filler metal shall conform to thechemical composition shown in Table 1 for Grade 1 material.7.Mechanical Properties7.1 Unless otherwise specified,wire shall be furnished insoft temper most suitable for hand feeding or ring winding onmandrels.A minimum elongation of 10%in 2 in.(50.8 mm)indicates that the wire is annealed.7.2 Unless otherwise specified,strip shall be furnished inhard as-rolled temper to facilitate clean blanking of thin shimsor preforms.A maximum elongation of 5%in 2 in.(50.8 mm)designates the strip as hard.8.Dimensions and Permissible Variations8.1 These materials must conform to the dimensional limi-tations listed in Table 2 for strip,wire,and preforms or to Table3 for the size distribution of powdered brazing filler metals.9.Finish9.1 The surface of strip,wire,or preforms shall be assmooth and free of dirt,oxide,pits,deep scratches,seams,1This specification is under the jurisdiction of ASTM Committee F01 onElectronics and is the direct responsibility of Subcommittee F01.03 on MetallicMaterials.Current edition approved Feb.1,2012.Published March 2012.Originallyapproved in 1969 as F106 69 T.Last previous edition approved in 2006 asF106 06.DOI:10.1520/F0106-12.2For 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 Summary page onthe ASTM website.3Available from American Welding Society(AWS),550 NW LeJeune Rd.,Miami,FL 33126.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 TABLE 1 Chemical Composition Requirements(in Wt.%)for Vacuum Grade Filler Metals for Electron DevicesA,B,CNOTE1All finished material shall be reasonably smooth and bright and free from dirt,oil,grease,or other foreign material.NOTE2 A complete designation of specified material must include the grade designation number(for example,BVAg-6b,Grade 1).NOTE3Single values shown are maximum percentages,except where otherwise specified.AWSClassifi-cationUNSDesigna-tionAgAuCuNiCoSnPdInZnCdPbPCGrade 1-Vacuum grade filler metalsBVAg-0P0701799.95 min.0.05.0.0010.0010.0020.0020.005BVAg-6bP0750749.051.0.Remainder.0.0010.0010.0020.0020.005BVAg-8P0772771.073.0.Remainder.0.0010.0010.0020.0020.005BVAg-8bP0772870.572.5.Remainder0.30.7.0.0010.0010.0020.0020.005BVAg-18P0760759.061.0.Remainder.9.510.5.0.0010.0010.0020.0020.005BVAg-29P0762760.562.5.Remainder.14.015.0 0.0010.0010.0020.0020.005BVAg-30P0768767.069.0.Remainder.4.55.5.0.0010.0010.0020.0020.005BVAg-31P0758757.059.0.31.033.0.Remainder.0.0010.0010.0020.0020.005BVAg-32P0754753.055.0.20.022.