ASTM_D_751_-_19.pdf

Designation:D75119Standard Test Methods forCoated Fabrics1This standard is issued under the fixed designation D751;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.Scope1.1 These test methods cover,but are not limited to,rubber-coated fabrics,that is,tarpaulins,rainwear,and similarproducts.1.2 The scope of each of these test methods appears in thesection in which the test method is described.1.3 The test methods appear in the following sections:Test MethodSectionDimensions and Mass7 10Breaking Strength11Procedure AGrab Test Method12 15Procedure BCut Strip Test Method16Elongation17Bursting Strength18Procedure A Ball Burst Method19 22Procedure B Diaphragm Burst Method23 26Puncture Resistance27 30Tearing Strength31Procedure APendulum Method32Procedure BTongue Tear Method33 36Trapezoidal Tear37 40Hydrostatic Resistance41Procedure AMullen Type Tester42 45Procedure BRising Water Column Tester46 49Adhesion Coating(to Fabrics)50 53Strength of Coating54 58Tack-Tear Resistance59 63Low Temperature Bend Test64Low Temperature Impact Test65Low-Temperature Crack Resistance66 70Seam Strength71 76Accelerated Heat Aging(Oven Method)77 84Dead Load Seam Strength85 88Blocking Resistance at Elevated Temperatures89 93Crush Resistance94 98Wicking of Coated Cloth99 1021.4 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.6 This international standard 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 Documents2.1 ASTM Standards:2D573 Test Method for RubberDeterioration in an AirOvenD1349 Practice for RubberStandard Conditions for Test-ingD1424 Test Method for Tearing Strength of Fabrics byFalling-Pendulum(Elmendorf-Type)ApparatusD2136 Test Method for Coated FabricsLow-TemperatureBend TestD2137 Test Methods for Rubber PropertyBrittleness Pointof Flexible Polymers and Coated FabricsD4483 Practice for Evaluating Precision for Test MethodStandards in the Rubber and Carbon Black ManufacturingIndustries3.Significance and Use3.1 Coated fabrics and rubber products made from coatedfabrics are important items of commerce,and adequate testmethods must be available to ensure the quality of theseproducts.These test methods provide for this testing capability.4.Standard Conditions4.1 Test ConditionsCoated fabrics shall be tested in anenvironment satisfying the conditions as defined in 4.2 or 4.3unless otherwise specified,or as per agreement betweensupplier and purchaser.When it is known that the coated fabricis to be used in a tropical environment,the atmospheredescribed in 4.3 shall be specified.1These test methods are under the jurisdiction of ASTM Committee D11 onRubber and Rubber-like Materials and are the direct responsibility of SubcommitteeD11.37 on Coated Fabrics,Rubber Threads and Seals.Current edition approved May 1,2019.Published May 2019.Originallyapproved in 1943.Last previous edition approved in 2011 as D751 06(2011).DOI:10.1520/D0751-19.2For 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 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 4.2 Temperate AtmosphereThe standard condition for test-ing coated fabrics shall be that reached by the fabric when inmoisture equilibrium with a standard atmosphere having arelative humidity of 50 6 5%at 23 6 2C(73 6 4F).4.3 Tropical AtmosphereThe standard condition for test-ing coated fabrics shall be that reached by the fabric when inmoisture equilibrium with a standard atmosphere having arelative humidity of 65 6 5%at 27 6 2C(80 6 2F).4.4 Moisture EquilibriumIt shall be considered that mois-ture equilibrium is reached