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  • ASTM
    A3-01(2012) Standard Specification for Steel Joint Bars, Low, Medium, and High Carbon (Non-Heat-Treated)
    Edition: 2012
    Unlimited Users - 1 Loc per year

Description of ASTM-A3 2012

ASTM A3 - 01(2012)

Standard Specification for Steel Joint Bars, Low, Medium, and High Carbon (Non-Heat-Treated)

Active Standard ASTM A3 | Developed by Subcommittee: A01.01

Book of Standards Volume: 01.04



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. Scope

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.

ASTM Standards

A370 Test Methods and Definitions for Mechanical Testing of Steel Products

A700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Shipment


rail; railway applications; steel joint bars; Carbon steel bars/shapes--specifications; Joint steel bars--specifications; Rail steel bars

ICS Code

ICS Number Code 77.140.70 (Steel profiles)

DOI: 10.1520/A0003-01R12

ASTM International is a member of CrossRef.


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