ASTM_D_2000_-_18.pdf

Designation:D200018Approved bySociety of Automotive EngineersSAE Recommended Practice J200Standard Classification System forRubber Products in Automotive Applications1This standard is issued under the fixed designation D2000;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 This classification system covers the properties of vul-canized rubber materials(natural rubber,reclaimed rubber,synthetic rubbers,alone or in combination)that are intendedfor,but not limited to,use in rubber products for automotiveapplications.NOTE1This classification system may serve many of the needs ofother industries in much the same manner as SAE numbered steels.It mustbe remembered,however,that this system is subject to revision whenrequired by automotive needs.It is recommended that the latest revisionalways be used.1.2 This classification system is based on the premise thatthe properties of all rubber products can be arranged intocharacteristic material designations.These designations aredetermined by types,based on resistance to heat aging,andclasses,based on resistance to swelling in oil.Basic levels arethus established which,together with values describing addi-tional requirements,permit complete description of the qualityof all elastomeric materials.1.3 In all cases where the provisions of this classificationsystem would conflict with those of the detailed specificationsfor a particular product,the latter shall take precedence.NOTE2When the rubber product is to be used for purposes where therequirements are too specific to be completely prescribed by this classi-fication system,it is necessary for the purchaser to consult the supplier inadvance,to establish the appropriate properties,test methods,and speci-fication test limits.1.4 The values stated in SI units are to be regarded asstandard.1.5 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:2D395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD429 Test Methods for Rubber PropertyAdhesion toRigid SubstratesD430 Test Methods for Rubber DeteriorationDynamicFatigueD471 Test Method for Rubber PropertyEffect of LiquidsD573 Test Method for RubberDeterioration in an AirOvenD575 Test Methods for Rubber Properties in CompressionD624 Test Method for Tear Strength of Conventional Vul-canized Rubber and Thermoplastic ElastomersD865 Test Method for RubberDeterioration by Heating inAir(Test Tube Enclosure)D925 Test Methods for Rubber PropertyStaining of Sur-faces(Contact,Migration,and Diffusion)D945 Test Methods for Rubber Properties in Compression orShear(Mechanical Oscillograph)D1053 Test Methods for Rubber PropertyStiffening atLow Temperatures:Flexible Polymers and Coated FabricsD1149 Test Methods for Rubber DeteriorationCracking inan Ozone Controlled EnvironmentD1171 Test Method for Rubber DeteriorationSurfaceOzone Cracking Outdoors(Triangular Specimens)D1329 Test Method for Evaluating Rubber PropertyRetraction at Lower Temperatures(TR Test)D1349 Practice for RubberStandard Conditions for Test-ingD1418 PracticeforRubberandRubberLaticesNomenclature1This classification system is under the jurisdiction ofASTM Committee D11 onRubber and Rubber-like Materials and is the direct responsibility of SubcommitteeD11.30 on Classification of Rubber Compounds.Current edition approved June 1,2018.Published July 2018.Originally approvedin 1962.Last previous edition approved in 2017 as D2000 12(2017).DOI:10.1520/D2000-18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandardsvolume 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 D2137 Test Methods for Rubber PropertyBrittleness Pointof Flexible Polymers and Coated FabricsD2240 Test Method for Rubber PropertyDurometer Hard-nessD3183 Practice for RubberPreparation of Pieces for TestPurposes from ProductsD596