ASTM A504/A504M-07
(Specification)Standard Specification for Wrought Carbon Steel Wheels
Standard Specification for Wrought Carbon Steel Wheels
SCOPE
1.1 This specification covers one-wear, two-wear, and multiple-wear wrought carbon steel wheels for locomotives and cars, designated Classes L, A, B, and C, heat-treated, wheels.
1.2 The service for which the various classes are intended is as follows:
1.2.1 Class B or C wheels shall be used for freight cars in interchange service.
1.2.2 Class B or C wheels are recommended for use on locomotives.
1.2.3 For passenger car service, the various classes are intended generally as follows:
Class L-High speed with more severe braking conditions than other classes and light wheel loads.
Class A-High speed with more severe braking conditions, but moderate wheel loads.
Class B-High speed service with severe braking conditions and heavier wheel loads.
Class C-(1) Service with light braking conditions and heavier wheel loads.
Class C-(2) Service with heavier braking conditions where off-tread brakes are employed.
1.3 The use of two-wear wheels is recommended for freight car service.
1.4 Supplementary requirements included in Specification A 788/A 788M may be specified by the purchaser for forgings ordered to this specification.
1.5 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as the standard. Within the text and tables, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.6 Unless the order specifies the applicable "M" specification designation, the material shall be furnished to the inch-pound units
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: A 504/A 504M – 07
Standard Specification for
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Wrought Carbon Steel Wheels
This standard is issued under the fixed designationA504/A504M; the number immediately following the designation indicates the year
of 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* 1.7 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This specification covers one-wear, two-wear, and
responsibility of the user of this standard to establish appro-
multiple-wear wrought carbon steel wheels for locomotives
priate safety and health practices and determine the applica-
and cars, designated Classes L, A, B, and C, heat-treated,
bility of regulatory limitations prior to use.
wheels.
1.2 The service for which the various classes are intended is
2. Referenced Documents
as follows:
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2.1 ASTM Standards:
1.2.1 Class B or C wheels shall be used for freight cars in
A 275/A 275M Test Method for Magnetic Particle Exami-
interchange service.
nation of Steel Forgings
1.2.2 Class B or C wheels are recommended for use on
A 388/A 388M Practice for Ultrasonic Examination of
locomotives.
Heavy Steel Forgings
1.2.3 For passenger car service, the various classes are
A 788/A 788M Specification for Steel Forgings, General
intended generally as follows:
Requirements
1.2.3.1 Class L—High speed with more severe braking
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2.2 SAE Documents:
conditions than other classes and light wheel loads.
SAE J 442 Test Strip, Holder and Gage for Shot Peening
1.2.3.2 Class A—High speed with more severe braking
SAE J 443 Recommended Practice for Procedures for
conditions, but moderate wheel loads.
Using Standard Shot Peening Test Strip
1.2.3.3 Class B—High speed service with severe braking
SAE J 827 Recommended Practice for Cast Steel Shot
conditions and heavier wheel loads.
2.3 Military Standard:
1.2.3.4 Class C—(1) Service with light braking conditions
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MIL-S-13165B Shot Peening of Metal Parts
and heavier wheel loads.
2.4 AAR Standard:
1.2.3.5 Class C—(2) Service with heavier braking condi-
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AAR M-107/M-208 Wheels, Carbon Steel
tions where off-tread brakes are employed.
1.3 The use of two-wear wheels is recommended for freight
3. Terminology
car service.
3.1 Definitions: (The following terminology is unique to the
1.4 Supplementary requirements included in Specification
Rail Road industry)
A 788/A 788M may be specified by the purchaser for forgings
3.1.1 multi-wear wheel, n—wheel that has sufficient metal
ordered to this specification.
in the rim for more than two turnings before it must be
1.5 The values stated in either inch-pound units or SI
replaced.
(metric) units are to be regarded separately as the standard.
3.1.2 one wear wheel, n—wheel that has only sufficient
Within the text and tables, the SI units are shown in brackets.
metal for the tread to be worn once to condemnable worn
The values stated in each system are not exact equivalents;
hollow condition.
therefore,eachsystemmustbeusedindependentlyoftheother.
3.1.2.1 Discussion—Thereisinsufficientmetalremainingin
Combining values from the two systems may result in noncon-
the rim to allow turning or truing of the wheel by machining to
formance with the specification.
1.6 Unless the order specifies the applicable “M” specifica-
tion designation, the material shall be furnished to the inch-
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
pound units
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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This specification is under the jurisdiction of ASTM Committee A01 on Steel, Available from the Society ofAutomotive Engineers, Inc., 400 Commonwealth
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee Drive, Warrendale, PA 15096.
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A01.06 on Steel Forgings and Billets. Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
Current edition approved March 1, 2007. Published March 2007. Originally Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
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approvedin1964toreplaceA 57andA 186.Lastpreviouseditionapprovedin2004 Available fromAssociation ofAmerican Railroads, 50 “F” St.,Washington, DC
e1
as A 504/A 504M – 04 . 20001.
*ASummary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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A 504/A 504M – 07
the standard tread contour and still have enough metal in the 5.1.1 The steel shall conform to the requirements for chemi-
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