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Designation: A2 – 02 (Reapproved 2008)

Standard Specification for

Carbon Steel Girder Rails of Plain, Grooved, and Guard Types1
This standard is issued under the fixed designation A2; 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. Asuperscript epsilon (´) indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense.

1. Scope* 1.1 This specification covers carbon steel girder rails2 of three classes based on type or type and weight, and chemistry defined as follows and in Table 1. 1.1.1 Unless otherwise specified by the purchaser,girderguard rails shall be Class A. 1.1.2 Plain and grooved-girder rails under 135 lb/yd (67.1 kg/m) in weight shall be specified by the purchaser as either Class A or Class B. 1.1.3 Plain and grooved-girder rails of 135 lb/yd in weight and heavier shall be Class C, unless otherwise specified. 1.2 The values states in inch-pound units are to be regarded as the standard. The values given in parentheses arefor information only. 2. Referenced Documents 2.1 ASTM Standards:3 A700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Shipment E10 Test Method for Brinell Hardness of Metallic Materials 3. Classification of Rails 3.1 No. 1 Rails—Rails that are free of injurious imperfections and flaws of all kinds. 3.2 No. 2 Rails—Rails that contain surface imperfections in such numberor of such character that shall not, in the judgment of the inspector, render them unfit for recognized uses. 4. Ordering Information 4.1 Orders for girder rails under this specification shall include the following information as appropriate:
1 This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility ofSubcommittee A01.01 on Steel Rails and Accessories. Current edition approved March 1, 2008. Published March 2008. Originally approved in 1912. Last previous edition approved in 2002 as A2 – 02. DOI: 10.1520/A0002-02R08. 2 Design details for carbon steel girder rails are indicated in the girder rail catalogs of individual manufacturers. 3 For referenced ASTM standards, visit the ASTM website, www.astm.org,or 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.

TABLE 1 Chemical Requirements, %
Class A Carbon Manganese Phosphorus, max Silicon 0.60–0.75 0.60–0.90 0.04 0.10–0.40 Class B 0.70–0.85 0.60–0.90 0.04 0.10–0.40 Class C 0.75–0.90 0.60–0.90 0.04 0.10–0.40

TABLE 2Product Analysis—Allowance Beyond Limits of Specified Chemical Analysis
Allowance Under Minumum Limit, % Carbon Manganese Phosphorus Silicon
A

Allowance Over Maximum Limit, % 0.04 0.06 0.008 0.02A

0.04 0.06 ... 0.02

Continuously cast allowances shall be 0.05 % over maximum for silicon.

4.1.1 ASTM designation and date of issue; 4.1.2 Quantity (tons or pieces as appropriate); 4.1.3 Completeidentification of section with dimensional drawing if required; 4.1.4 Arrangement of bolt holes, bond holes, and tie rod holes with dimensional drawings, if required; 4.1.5 Class (in accordance with 1.1 and Table 1); and 4.1.6 Certification and Test Report (see 12.1). 5. Manufacture 5.1 Melting Practice—The steel shall be made by any of the following processes: open-hearth, basic-oxygen, orelectricfurnace. 5.1.1 The steel may be cast by a continuous process or in ingots. 5.2 Discard—Sufficient discard shall be made to secure freedom from injurious segregation and piping. 6. Chemical Composition 6.1 Heat or Cast Analysis—An analysis for each heat or cast of steel shall be made by the manufacturer to determine the percentage of the elements specified in Table 1. The analysis shall be made...