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This specification covers steel joint bars of low-carbon, medium-carbon, and high-carbon grades (Grades 1, 2, and 3) for railway applications. Steel shall be made through basic-oxygen or electric-furnace processes and cast through continuous process or in ingots. An analysis of each heat or cast shall be made to determine the percentage compositions of carbon, manganese, phosphorus, and sulfur. Tension test shall also be made to conform to specified tensile strength and elongation values. Guidelines on the dimensions and physical variations of joint bars are given. Inspection, rejection, rehearing, certification, and product marking procedures are cited.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers steel joint bars for connecting steel rails in mine, industrial, and standard railroad track.
1.2 Three grades of joint bars are defined for applications where non-heat treated bars are suitable:
1.2.1 Grade 1, low-carbon, primarily for industrial and mine use.
1.2.2 Grade 2, medium-carbon, primarily for industrial and mine use.
1.2.3 Grade 3, high-carbon, for general use in standard railroad track. They may be used in the production of insulated track joints.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Shipment
ICS Number Code 77.140.70 (Steel profiles)
UNSPSC Code 25121700(Railroad support equipment and systems)