ASTM_D_2671_-_13.pdf

Designation:D267113Standard Test Methods forHeat-Shrinkable Tubing for Electrical Use1This standard is issued under the fixed designation D2671;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 These test methods cover the testing of heat-shrinkabletubing used for electrical insulation.Materials used includepoly(vinyl chloride),polyolefins,fluorocarbon polymers,sili-cone rubber,and other plastic or elastomeric compounds.1.2 The procedures appear in the following sections:ProcedureSectionsASTM MethodReferenceAdhesive Peel Strength98 104Brittleness Temperature40D746Color55 and 56D1535Color Stability57 62D1535Conditioning7D618Copper Stability93Corrosion Testing89 95Dielectric Breakdown20 25D149Dimensions8 13D876Flammability68 72D876Fluid Resistance63 67Fungus Resistance104 108Heat Resistance49 54Heat Shock26 30Low-Temperature Properties36 43Restricted Shrinkage14 19Selection of Test Specimens6Secant Modulus81 84D882Storage Life31 35Specific Gravity73 and 74D792Stress Modulus85 88D412Tensile Strength and Ultimate Elongation44 48D412Thermal Endurance96 and 97Volume Resistivity75 78D257Water Absorption79 and 80D570Melting Point104 108D34181.3 This is a fire-test-response standard.1.4 The values stated in inch-pound units are to be regardedas standard,except for temperature,which shall be expressedin degrees Celsius.The values given in parentheses aremathematical conversions to SI units that are provided forinformation only and are not considered standard.1.5 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 establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.For specific hazardstatements,see Sections 5 and 68.2.NOTE1These test methods are similar,but not identical to,those inIEC 606842(see also Note 9).2.Referenced Documents2.1 ASTM Standards:2D149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD257 Test Methods for DC Resistance or Conductance ofInsulating MaterialsD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD570 Test Method for Water Absorption of PlasticsD618 Practice for Conditioning Plastics for TestingD746 Test Method for Brittleness Temperature of Plasticsand Elastomers by ImpactD792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD876 Test Methods for Nonrigid Vinyl Chloride PolymerTubing Used for Electrical InsulationD882 Test Method for Tensile Properties of Thin PlasticSheetingD1535 Practice for Specifying Color by the Munsell SystemD1711 Terminology Relating to Electrical InsulationD3418 Test Method for Transition Temperatures and En-thalpies of Fusion and Crystallization of Polymers byDifferential Scanning CalorimetryE176 Terminology of Fire Standards2.2 Other Documents:MIL-STD 104 Limits for Electrical Insulation Color31These test methods are under the jurisdiction of ASTM Committee D09 onElectrical and Electronic Insulating Materials and are the direct responsibility ofSubcommittee D09.07 on Flexible and Rigid Insulating Materials.Current edition approved Nov.1,2013.Published December 2013.Originallyapproved in 1967.Last previous edition approved in 2009 as D2671 09.DOI:10.1520/D2671-13.2For 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 Standardization Documents Order Desk,Bldg.4 Section D,700Robbins Ave.,Philadelphia,PA 19111-5094,Attn:NPODS.*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 IEC Publication 216 Guide for the Determination of Ther-mal Endurance Properties of Electrical Insulating Materi-als4IEC Publication 60684 Specification for Flexible InsulatingSleeving4ISO 846 PlasticsEvaluation of the Action of Microorgan-isms43.Terminology3.1 Definitions:3.1.1 For definitions pertaining to electrical insulation,referto Terminology D1711.3.1.2 For definitions pertaining to fire standards,refer toTerminology E176.3.1.3 heat-shrinkable tubing,ntubing that will reduce indiameter from an expanded size to a predetermined size by theapplication of heat.3.2 Definitions of Terms Specific to This Standard:3.2.1 brittleness temperature,nthe temperature at which50%of the specimens fail when the specified number arete