1、Designation:B56301(Reapproved 2017)Standard Specification forPalladium-Silver-Copper Electrical Contact Alloy1This standard is issued under the fixed designation B563;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last r
2、evision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This specification covers an alloy containin
3、g palladium,silver,copper,platinum,and nickel in the form of wire,rod,and strip for electrical contacts.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 co
4、nsidered standard.1.3 The following precautionary statement pertains to thetest method portion only,Section 7,of this specification:Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to become famili
5、ar with all hazards includingthose identified in the appropriate Safety Data Sheet(SDS)forthis product/material as provided by the manufacturer,toestablish appropriate safety and health practices,and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard
6、was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced
7、 Documents2.1 ASTM Standards:2B476 Specification for General Requirements for WroughtPrecious Metal Electrical Contact MaterialsE8 Test Methods for Tension Testing of Metallic MaterialsE384 Test Method for Microindentation Hardness of Mate-rials3.Materials and Manufacture3.1 Raw materials shall be o
8、f such quality and purity thatthe finished product will have the properties and characteristicsprescribed in this specification.3.2 The material shall be finished by such operations(coldworking,heat treating,annealing,turning,grinding,pickling)and are required to produce the prescribed properties.4.
9、Chemical Composition4.1 Material produced under this specification shall meet therequirements of chemical composition shown in Table 1.5.Mechanical Properties5.1 The contract or order may specify ultimate tensilestrength,elongation,microhardness(Knoop or Vickers),hard-ness(Rockwell or Rockwell Super
10、ficial),or a combination ofthese mechanical properties as temper criterion.If the contractor order does not specify a temper criterion,then the criterionfor temper designation will be ultimate tensile strength andelongation.5.2 The material shall conform to the mechanical propertiesshown in Table 2,
11、Table 3,or Table 4.6.General Requirements6.1 Specification B476 shall apply to all materials producedto this specification.7.Test Methods7.1 Test methods are in accordance with Specification B476.7.2 All tension tests are in accordance with Test Methods E8and tensile specimens are full cross-section
12、 size when practi-cal.Elongation measurements should be based on a 2 in.(50mm)gage length.7.3 Hardness is in accordance with Test Method E384.Testmaterial 0.005 in.(0.13 mm)in thickness(diameter)and largerusing a 100 g indenter load.Test material less than 0.005 in.inthickness(diameter)using a 50 g
13、indenter load.Make aminimum of five hardness indentations on each specimen.Make all indentations so that the long axis of the Knoopindenter is parallel to the rolling or drawing direction of thematerial.1This specification is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloy
14、s and is the direct responsibility of SubcommitteeB02.05 on Precious Metals and Electrical Contact Materials.Current edition approved April 1,2017.Published April 2017.Originallyapproved in 1972.Last previous edition approved in 2011 as B563 01(2011).DOI:10.1520/B0563-01R17.2For referenced ASTM stan
15、dards,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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2
16、959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 7.4 Perform chemical analysis by spectrochemical or wetanalysis methods.7.5 Conduct all tests at room temperature(65 to 85F),(18to 29C).8.Inspection and Testing8.1 Mat
