ASTM_A_504_-_A_504M_-_14.pdf

Designation:A504/A504M14Standard Specification forWrought Carbon Steel Wheels1This standard is issued under the fixed designation A504/A504M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers one-wear,two-wear,andmultiple-wear wrought carbon steel wheels for locomotivesand cars,designated Classes L,A,B,and C,heat-treated,wheels.1.2 The service for which the various classes are intended isas follows:1.2.1 Class B or C wheels shall be used for freight cars ininterchange service.1.2.2 Class B or C wheels are recommended for use onlocomotives.1.2.3 For passenger car service,the various classes areintended generally as follows:1.2.3.1 Class LHigh speed with more severe brakingconditions than other classes and light wheel loads.1.2.3.2 Class AHigh speed with more severe brakingconditions,but moderate wheel loads.1.2.3.3 Class BHigh speed service with severe brakingconditions and heavier wheel loads.1.2.3.4 Class C(1)Service with light braking conditionsand heavier wheel loads.1.2.3.5 Class C(2)Service with heavier braking condi-tions where off-tread brakes are employed.1.3 Supplemental requirements are provided for use whereadditional testing or additional restrictions are required by thepurchaser.Supplementary requirements included in Specifica-tion A788/A788M may also be specified by the purchaser forforgings ordered to this specification.Any supplemental re-quirements apply only when specified in the purchase order.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.Within the text andtables,the SI units are shown in brackets.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 nonconformancewith the standard.1.5 Unless the order specifies the applicable“M”specifica-tion designation,the material shall be furnished to the inch-pound units.1.6 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:2A275/A275M Practice for Magnetic Particle Examination ofSteel ForgingsA388/A388M Practice for Ultrasonic Examination of SteelForgingsE399 Test Method for Linear-Elastic Plane-Strain FractureToughness KIcof Metallic MaterialsA788/A788M Specification for Steel Forgings,General Re-quirements2.2 SAE Documents:3SAE J 442 Test Strip,Holder and Gage for Shot PeeningSAE J 443 Recommended Practice for Procedures for UsingStandard Shot Peening Test StripSAE J 827 Recommended Practice for Cast Steel ShotSAE J 2277 Shot Peening Coverage DeterminationAMS-2430 Shot Peening of Metal Parts2.3 AAR Standard:4AAR M-107/M-208 Wheels,Carbon Steel3.Terminology3.1 Definitions:(The following terminology is unique to theRail Road industry).3.1.1 multi-wear wheel,nwheel that has sufficient metalin the rim for more than two turnings before it must bereplaced.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.06 on Steel Forgings and Billets.Current edition approved May 1,2014.Published July 2014.Originally approvedin 1964 to replace A57 and A186.Last previous edition approved in 2013 asA504/A504M 08(2013).DOI:10.1520/A0504_A0504M-14.2For 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.3Available from SAE International(SAE),400 Commonwealth Dr.,Warrendale,PA 15096-0001,http:/www.sae.org.4Available from Association of American Railroads(AAR),425 Third Street,SW,Washington,DC 20024,http:/www.aar.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.2 one wear wheel,nwheel that has only sufficientmetal for the tread to be worn once to condemnable wornhollow condition.3.1.2.1 DiscussionThere is insufficient metal remaining inthe rim to allow turning or truing of the wheel by machining tothe standard tread contour and still have enough metal in therim to support service loads.Wear refers to the amount of metalon the wheel rim when new.3.1.3 tape size,nrail road method of expressing wheelcircumference based on measurement with a steel tape placedaround the tread at the taping line.3.1.3.1 DiscussionFor each wheel size there is a cali-