ASTM_D_6413_-_D_6413M_-_15.pdf

Designation:D6413/D6413M15Standard Test Method forFlame Resistance of Textiles(Vertical Test)1This standard is issued under the fixed designation D6413/D6413M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method is used to measure the vertical flameresistance of textiles.1.1.1 As a part of the measure of flame resistance,after-flame and afterglow characteristics are evaluated.1.2 This standard shall be used to measure and describe theresponse of materials,products,or assemblies to heat and flameunder controlled laboratory conditions and shall not be used todescribe or appraise the fire hazard or fire risk of materials,products,or assemblies under actual fire conditions.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.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 establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD1776 Practice for Conditioning and Testing TextilesD3776/D3776M Test Methods for Mass Per Unit Area(Weight)of FabricD4391 Terminology Relating to The Burning Behavior ofTextiles3.Terminology3.1For terms relating to the burning behavior of textiles,see Terminology D4391.3.1.1 The following terms are relevant to this standard.3.1.1.1 afterflame,npersistent flaming of a material afterthe ignition source has been removed.3.1.1.2 after-flame time,nthe length of time for which amaterial continues to flame after the ignition source has beenremoved.3.1.1.3 afterglow time,nthe time afterglow continuesafter the removal of the ignition source and the cessation offlaming.3.1.1.4 char length,nin measuring flame resistance oftextiles,the distance from the fabric edge,which is directlyexposed to the flame to the furthest point of visible fabricdamage after a specified tearing force has been applied.3.1.1.5 flame application time,nthe time interval forwhich the ignition flame is applied to a material.3.1.1.6 melting,na liquification of material under theinfluence of heat.3.2 For all terminology related to textiles,refer to Termi-nology D123.4.Summary of Test Method4.1 A specimen is positioned vertically above a controlledflame and exposed for a specified period of time.The flamethen is removed,and afterflame time and afterglow time aremeasured.4.2 Char length is measured under a specified force.4.3 Any evidence of melting or dripping is noted.5.Significance and Use5.1 This test method determines the response of textiles to astandard ignition source,deriving measurement values forafterflame time,afterglow time,and char length.5.2 The vertical flame resistance,as determined by this testmethod,only relates to a specified flame exposure and appli-cation time.5.3 This test method maintains the specimen in a static,draft-free,vertical position and does not involve movementexcept that resulting from the exposure.5.4 Test Method D6413 has been adopted from Federal TestStandard No.191A method 5903.1,which has been used formany years in acceptance testing.The between-laboratory1This test method is under the jurisdiction ofASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.52 on Flammability.Current edition approved June 1,2015.Published July 2015.Originally approvedin 1999.Last previous edition approved in 2013 as D6413/D6413M 13b.DOI:10.1520/D6413_D6413M-15.2For 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 precision of this test method has not been established.Refer toSection 14 for single-laboratory precision.5.4.1 If there are differences or practical significance be-tween reported test results for two laboratories(or more),comparative tests should be performed to determine if there isa statistical bias between them,using competent statisticalassistance.As a minimum,the test samples used should be ashomogeneous as possible,that are drawn from the materialfrom which the disparate test results are obtained,and that areassigned randomly in equal numbers to each laboratory fortesting.Other materials with established test values