ASTM_B_913_-_05_2015.pdf

Designation:B91305(Reapproved 2015)Standard Test Method forEvaluation of Crimped Electrical Connections to 16-Gaugeand Smaller Diameter Stranded and Solid Conductors1This standard is issued under the fixed designation B913;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the 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.Scope1.1 This test method establishes the requirements for astandardized method of evaluating the quality of crimped-typeelectrical connections to solid or stranded conductors.This testmethod applies to 16-gauge and smaller diameter copper wire,coated or uncoated.1.2 This test method is applicable to connection systemsintended for indoor use,or for use in environmentally protectedenclosures.Additional testing may be required to assuresatisfactory performance in applications where high humidityor corrosive environment,or both,may be present.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.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 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.Referenced Documents2.1 ASTM Standards:2B8 Specification for Concentric-Lay-Stranded CopperConductors,Hard,Medium-Hard,or SoftB258 Specification for Nominal Diameters and Cross-SectionalAreas ofAWG Sizes of Solid Round Wires Usedas Electrical ConductorsB542 Terminology Relating to Electrical Contacts and TheirUse3.Terminology3.1 DefinitionsMany terms related to electrical contactsused in this test method are defined in Terminology B542.3.2 Definitions of Terms Specific to This Standard:3.2.1 crimp,vto establish an electrical and mechanicalattachment between the two members by mechanically deform-ing one contact member around another.In most cases,onemember is a wire or group of wires,the other is a hollowcylinder or partial cylinder that is deformed around the wires.3.2.2 crimp barrel,crimp tab,nthe portion of the crimpterminal that is deformed in the crimping operation.3.2.3 crimped connection,na mechanical and electricalconnection between a conductor and a component.The con-nection is made by compressing(crimping)the component(crimp barrel)or tab(s)of the component about the conductorusing a tool specifically designed for the purpose3.2.4 crimp terminal,nan electrical component designedto be electrically and mechanically attached to a wire bydeforming a portion of the component in a crimping operationto form an attachment to the wire.The other end of the terminalusually has a ring,fork,spade,tab,or related configurationdesigned to attach to another connection such as a screw orterminal block.4.Summary of Test Method4.1 A test lot of test specimens of the crimp terminalcrimped to a short length of wire is prepared.The wire is pulledfrom a group of the specimens in a tensile pull and the forcecompared to set requirements based on wire diameter.Aseparate group of specimens is subjected to an electrical testwhere resistance stability of the specimen is evaluated duringdeflection of the wire at the exit of the crimped connection.Thegroup is then aged for 33 days at 118C and periodicallyretested in the electrical test.The electrical test results arecompared to a standard value based on wire diameter.Atest lotpasses the evaluation if it passes both the mechanical pull testand the electrical test.In Method B,additional pull tests areperformed on subgroups of parts during and after the aging testto provide information on progressive degradation in perfor-mance.1This test method is under the jurisdiction of ASTM Committee B02 onNonferrous Metals and Alloys and is the direct responsibility of SubcommitteeB02.11 on Electrical Contact Test Methods.Current edition approved Oct.1,2015.Published October 2015.Originallyapproved in 2000.Last previous edition approved in 2010 as B913 05(2010).DOI:10.1520/B0913-05R15.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Significance and Use5.1 This test method establishes the requirements for astandardized method of evaluating the performance ofcrimped-type electrical connections having solid or strandedconductors.5.2 In order to achieve a successful crimped connection,thecrimping tool must d