ASTM A2-02

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Designation: A 2 – 02
Standard Specification for
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Carbon Steel Girder Rails of Plain, Grooved, and Guard Types
This standard is issued under the fixed designationA2; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
TABLE 1 Chemical Requirements, %
1. Scope*
2
Class A Class B Class C
1.1 This specification covers carbon steel girder rails of
Carbon 0.60–0.75 0.70–0.85 0.75–0.90
three classes based on type or type and weight, and chemistry
Manganese 0.60–0.90 0.60–0.90 0.60–0.90
defined as follows and in Table 1:
Phosphorus, max 0.04 0.04 0.04
1.1.1 Unless otherwise specified by the purchaser, girder-
Silicon 0.10–0.40 0.10–0.40 0.10–0.40
guard 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
4.1.2 Quantity (tons or pieces as appropriate),
Class A or Class B.
4.1.3 Complete identification of section with dimensional
1.1.3 Plain and grooved-girder rails of 135 lb/yd in weight
drawing if required,
and heavier shall be Class C, unless otherwise specified.
4.1.4 Arrangement of bolt holes, bond holes, and tie rod
1.2 The values states in inch-pound units are to be regarded
holes with dimensional drawings, if required,
as the standard. The values given in parentheses are for
4.1.5 Class (in accordance with 1.1 and Table 1), and
information only.
4.1.6 Certification and Test Report (see 12.1).
2. Referenced Documents
5. Manufacture
2.1 ASTM Standards:
5.1 MeltingPractice—The steel shall be made by any of the
A 700 Practices for Packaging, Marking, and Loading
following processes: open-hearth, basic-oxygen, or electric-
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Methods for Steel Products for Domestic Shipments
furnace.
E 10 Test Method for Brinell hardness of Metallic Materi-
5.1.1 The steel may be cast by a continuous process, or in
4
als
ingots.
5.2 Discard—Sufficient discard shall be made to secure
3. Classification of Rails
freedom from injurious segregation and piping.
3.1 No. 1 Rails—Rails that are free of injurious imperfec-
tions and flaws of all kinds.
6. Chemical Composition
3.2 No. 2 Rails—Rails that contain surface imperfections in
6.1 Heat or Cast Analysis—An analysis for each heat or
suchnumberorofsuchcharacterthatshallnot,inthejudgment
castofsteelshallbemadebythemanufacturertodeterminethe
of the inspector, render them unfit for recognized uses.
percentage of the elements specified in Table 1. The analysis
shall be made from a test sample representing the heat or cast
4. Ordering Information
and shall conform to the requirements in Table 1.
4.1 Orders for girder rails under this specification shall
6.2 Upon request by the purchaser, similar samples shall be
include the following information as appropriate:
provided to verify the heat or cast analysis as determined in
4.1.1 ASTM designation and date of issue,
6.1.
6.3 Product Analysis—When ladle tests are not available,
finished material representing the heat may be product tested.
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
The product analysis allowance beyond the limits of the
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
specified ladle analysis shall be within the limits for product
A01.01 on Steel Rails and Accessories.
analyses specified in Table 2.
Current edition approved November 10, 2002. Published December 2002.
Originally approved in 1912. Last previous edition approved in 1990 as A 31 – 90
7. Hardness Properties
(1997).
2
Design details for carbon steel girder rails are indicated in the girder rail
7.1 Test Specimens:
catalogs of individual manufacturers.
3
7.1.1 Three representative sections of rail from each heat
Annual Book of ASTM Standards, Vol 01.05.
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Annual Book of ASTM Standards, Vol 03.01. shall be selected as test specimens.
*A Summary of Changes section appears at the end of this standard.
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A 2–02
TABLE 2 Product Analysis—Allowance Beyond Limits of
8.3.3 Standard 39-ft lengths with up to 11 % of the entire
Specified Chemical Analysis
order in lengths shorter than standard, varying by 1 ft (0.3 m)
Allowance Under Minumum Allowance Over Maximum
from 38 to 24 ft (11.6 to 7.3 m) may be specified; or
Limit, % Limit, %
8.3.4 Length variations other than those described in 8.3.3
Carbon 0.04 0.04
may be established by agreement between the purchaser and
Manganese 0.06 0.
...