ASTM_D_622_-_99_2012.pdf

Designation:D62299(Reapproved 2012)Standard Test Methods forRubber Hose for Automotive Air and Vacuum Brake System1This standard is issued under the fixed designation D622;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.These test methods were prepared jointlyby the Society of Automotive Engineers and the American Society for Testing and Materials.1.Scope1.1 These test methods are intended for use in testing theconventional types of hose employed for the operation of airbrake and vacuum brake systems,2either on a single motorvehicle or as connecting or transmission lines in a combinationof vehicles.The hose may be assembled with suitable metalcouplings or may be as fabricated for use with detachablefittings.The term“rubber”as used in these test methodsincludes synthetic compounds as well as compounds of naturalrubber.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.3 This standard does not purport to address all of thesafety problems,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:3D380 Test Methods for Rubber HoseD413 Test Methods for Rubber PropertyAdhesion to Flex-ible SubstrateD471 Test Method for Rubber PropertyEffect of LiquidsD573 Test Method for RubberDeterioration in an AirOvenD1149 Test Methods for Rubber DeteriorationCracking inan Ozone Controlled EnvironmentD2240 Test Method for Rubber PropertyDurometer Hard-nessE4 Practices for Force Verification of Testing Machines2.2 SAE Standards:2J1402 Automotive Air Brake Hose and Hose AssembliesJ1403 Vacuum Brake Hose3.Significance and Use3.1 The purpose of these test methods are to providenationally recognized test methods for air brake and vacuumbrake hose,in particular the hose specifications SAE J1402 andSAE J1403,and to provide producers,distributors,and userswith a basis for evaluating the characteristics of these hoseproducts.4.General Methods4.1 The special tests described in these test methods shall beapplied as required in order to comply with the detailedspecifications for these types of hose.Otherwise,the generalmethods in Test Methods D380 shall be used and are herebymade a part of these test methods.4.2 In case of a conflict between the provisions of thesegeneral test methods and those of detailed specifications or testmethods for a particular hose,the latter shall take precedence.5.Sampling5.1 One representative sample of each lot to be tested shallbe taken.The total length of hose required for all tests is asfollows:Air brake hoseapproximately 3 m(9 ft)Vacuum brake hoseapproximately 5 m(15 ft)5.2 Each test specimen shall be prepared from the originalsample without having been subjected to any previous test.5.3 In the interest of safety,any hose remaining intact afterthese tests shall be destroyed.1These test methods are under the jurisdiction of ASTM Committee D11 onRubber and are the direct responsibility of Subcommittee D11.31 on Rubber Hoseand Belting.Current edition approved May 1,2012.Published July 2012.Originally approvedin 1941.Last previous edition approved in 2005 as D622 99(2005).DOI:10.1520/D0622-99R12.2For specifications covering hose of these types,reference should be made to theAir Brake Hose(SAE J1402)and for Vacuum Brake Hose(SAE J1403)of theSociety of Automotive Engineers,SAE Handbook.Available from Society ofAutomotive Engineers(SAE),400 Commonwealth Dr.,Warrendale,PA 15096-0001.3For 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 6.Test Conditions6.1 The temperature of the testing room shall be maintainedat 23 6 5C(73 6 9F).The temperature of the test samplesshall be stabilized at the testing room temperature prior totesting.TESTS APPLICABLE TO BOTH AIR BRAKE ANDVACUUM BRAKE HOSE7.Hydrostatic Bursting Test7.1 Conduct the hydrostatic bursting test in accordance withTest Methods D380.8.Adhesion Test8.1 Fiber Reinforced HoseConduct the adhesion test be-tween component parts of fiber reinforced hose in accordancewith Test Methods D413,Machine Method.8.2 Wire Reinforced HoseConduct the adhesion test onspecimens with a minimum length of 380 mm(15 in.)preparedfrom the original sample without having been subject toprevious tests.8.2.1 Procedure