ASTM A729/A729M-05a - 1.11.2005
 
1. Scope

1.1 This specification covers quenched and tempered alloy steel axles for mass transit and commuter cars in electric railway service.

1.2 This specification is for solid design roller bearing axles with machined bodies.

1.3 Various axle designs are used for this service including motor and nonmotor with either inboard or outboard journals.

1.4 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.

1.5 The values stated in inch-pound units are to be regarded as the standard.

 
2. Referenced Documents

A275/A275M-23

Standard Practice for Magnetic Particle Examination of Steel Forgings

A29/A29M-23

Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought

A788/A788M-26a

Standard Specification for Steel Forgings, General Requirements (Includes all amendments and changes 8/6/2026).

E112-25

Standard Test Methods for Determining Average Grain Size

E1426-14(2024)

Standard Test Method for Determining the X-Ray Elastic Constants for Use in the Measurement of Residual Stress Using X-Ray Diffraction Techniques

A388/A388M-26

Standard Practice for Ultrasonic Examination of Steel Forgings

E381-22

Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings