1、Designation:F192398(Reapproved 2014)Standard Test Method forTires,Pneumatic,Low Speed,Off Highway1This standard is issued under the fixed designation F1923;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A n
2、umber in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis ASTM Standard has been developed to replace ASTM Provisional Standard PS 86-97.TheProvisional Standard was approved so that the U.S.mi
3、litary and other government agencies couldcontinue to purchase tested and qualified tires,until F1923 had been approved.The provisionalstandard replaced the governments specification ZZ-T-1083,Federal Specification,Tires,Pneumatic,Low Speed,Off Highway,under the former Federal Tire Program.That prog
4、ram was discontinued andis replaced by the U.S.Army Tank Automotive Commands Cooperative Tire Qualification Program(CTQP).While fulfilling the militarys commercial and tactical needs,the CTQPwill continue to servefederal,state,and local agencies that want to purchase qualified tires using this test
5、method.This test method is designed to be used in conjunction with the Administrators Approval andRequirements Manual for Tires,Pneumatic,Low Speed,Off Highway(CTQP F1923)(1),2to qualifytires for purchase by the U.S.federal government,military,and other state and local entities.1.Scope1.1 This test
6、method covers measurements for comparativetire strength and dimensional characteristics.This test methodcovers new and retreaded pneumatic tires,both tube andtubeless types,and flaps when applicable,for mounting onconstruction,earthmoving,mining and logging equipment,graders,mobile cranes,and simila
7、r vehicles operated at lowspeeds off the road.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 concerns,if any,associated with its use.It is theresponsibility of
8、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:3D412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionF538 Terminology Relating to t
9、he Characteristics and Per-formance of Tires3.Terminology3.1 Definitions:3.1.1 bead,nof a tire,the part of a tire that comes incontact with the rim and is shaped to secure the tire to the rim.F5383.1.2 groove,na void that is relatively narrow comparedto its length.F5383.1.3 groove(void)depth,nmeasur
10、ement of the perpen-dicular distance from a real or calculated reference defined byedges of two adjacent ribs(lugs)to the lowest point of contactin the groove(void).F5383.1.4 load index,na numerical code associated with themaximum load a tire can carry at the speed indicated by itsspeed symbol under
11、 specified conditions.3.1.5 load symbol,na code associated with the maximumload a tire can carry at the speed indicated by its speed symbolunder specified conditions.3.1.6 nominal plunger energy,12ML2/T2,nin tiretesting,one half of the product of a peak force(required torupture the tire structure in
12、 the tread area)and maximumplunger travel into a tire at the time of rupture.F5383.1.7 outside diameter,nthe maximum diameter of a tirewhen it is mounted and inflated.F5381This test method is under the jurisdiction of ASTM Committee F09 on Tiresand is the direct responsibility of Subcommittee F09.20
13、 on Vehicular Testing.Current edition approved Jan.1,2014.Published February 2014.Originallyapproved in 1998.Last previous edition approved in 2005 as F1923 98(2005).DOI:10.1520/F1923-98R14.2The boldface numbers in parentheses refer to the list of references at the end ofthis standard.3For reference
14、d 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
15、,PA 19428-2959.United States1 3.1.8 overall width,nthe maximum cross-sectional widthof a tire,including protective or decorative ribs.F5383.1.9 ply,nin a tire,a layer of rubber-coated parallelcords.F5383.1.10 ply rating,nthe term is used to identify a given tirewith its maximum recommended load when
16、 used in a specifictype of service,giving an index of tire strength,not necessarilyrepresenting the number of cord plies in the tire.3.1.11 rib,na continuous circumferential projection.F5383.1.12 rim,nthe periphery of a wheel to which a tire or atube assembly may be affixed.F5383.1.13 sidewall,nof a tire,that portion of a tire betweenthe tread and the bead.F5383.1.14 tire,na load-bearing ground-contacting circumfer-ential attachment to a vehicle wheel.F5383.1.15 tread,nof a tire,the part of a ti