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Description of ASTM-A21 1999ASTM A21-94-Reapproved1999Withdrawn Standard: Standard Specification for Carbon Steel Axles, Non-Heat-Treated and Heat-Treated, for Railway Use (Withdrawn 2003)ASTM A21Scope 1.1 This specification covers nonheat-treated axles up to and including those 6 1/2 in. (165.1 mm) nominal diameter at the center and heat-treated axles of all sizes for freight cars, passenger cars, and locomotives. 1.2 This specification is for axles with machined bodies. For axles with as-forged bodies, see Specification A383. 1.3 The grades of carbon steel axles are as follows: 1.3.1 Grade U -Nonheat-treated. 1.3.2 Grade F -Double normalized and tempered. (All freight axles over 6 1/2 in. (165.1 mm) nominal diameter at the center shall be Grade F.) 1.3.3 Grade G -Quenched and tempered. 1.3.4 Grade H -Normalized, quenched, and tempered. 1.3.5 Grades F, G, and H axles are used in heavy-duty service on locomotives, cars, and other equipment. 1.4 Typical designs for plain and roller bearing axles are shown in the Manual of Standards and Recommended Practice of the Association of American Railroads. 1.5 Supplementary requirements are provided for use when additional testing or inspection is desired. These shall apply only when specified individually by the purchaser in the order. 1.6 The values stated in inch-pound units are to be regarded as the standard. Keywords Axles; Carbon steel railroad materials; Drop tests; Railroad steel materials-axles; Steel-axles; Tension (tensile) properties/tests-steel; Ultrasonic testing; axles-carbon steel, non-heat-/heat-treated for railway use ICS Code ICS Number Code 45.040 (Materials and components for railway engineering) DOI: 10.1520/A0021-94R99 This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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