ASTM A2-02(2014)
(Specification)Standard Specification for Carbon Steel Girder Rails of Plain, Grooved, and Guard Types
Standard Specification for Carbon Steel Girder Rails of Plain, Grooved, and Guard Types
ABSTRACT
This specification deals with carbon steel girder rails of plain, grooved, and guard types. Materials considered in this specification are grouped into three classes (Class A, B, and C) based on type, weight and chemistry (carbon, manganese, phosphorus, and silicon compositions). Steel samples shall be melt processed by either open-hearth, basic-oxygen, or electric furnace, and may be cast by a continuous process or in ingots. Material specimens shall undergo product analysis and tests, and shall conform to required chemical and physical attributes such as chemical composition, Brinell hardness, weight, length, sectioning, end finishing, drilling and punching specifications. Rails shall be finished by cold straightening in a press or roller machine to remove twists, waves and kinks. Final products shall be marked either by brand and stamp, paint, or bar code.
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, girder-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 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 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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:A2 −02 (Reapproved 2014)
Standard Specification for
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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 4. Ordering Information
1.1 This specification covers carbon steel girder rails of 4.1 Orders for girder rails under this specification shall
three classes based on type or type and weight, and chemistry include the following information as appropriate:
defined as follows and in Table 1. 4.1.1 ASTM designation and date of issue;
1.1.1 Unless otherwise specified by the purchaser, girder- 4.1.2 Quantity (tons or pieces as appropriate);
guard rails shall be Class A. 4.1.3 Complete identification of section with dimensional
1.1.2 Plain and grooved-girder rails under 135 lb/yd (67.1 drawing if required;
kg/m) in weight shall be specified by the purchaser as either 4.1.4 Arrangement of bolt holes, bond holes, and tie rod
Class A or Class B. holes with dimensional drawings, if required;
1.1.3 Plain and grooved-girder rails of 135 lb/yd in weight 4.1.5 Class (in accordance with 1.1 and Table 1); and
and heavier shall be Class C, unless otherwise specified. 4.1.6 Certification and Test Report (see 12.1).
1.2 The values stated in inch-pound units are to be regarded
5. Manufacture
as standard. The values given in parentheses are mathematical
5.1 MeltingPractice—The steel shall be made by any of the
conversions to SI units that are provided for information only
following processes: open-hearth, basic-oxygen, or electric-
and are not considered standard.
furnace.
2. Referenced Documents 5.1.1 The steel may be cast by a continuous process or in
ingots.
2.1 ASTM Standards:
A700 Practices for Packaging, Marking, and Loading Meth- 5.2 Discard—Sufficient discard shall be made to secure
ods for Steel Products for Shipment (Withdrawn 2014)
freedom from injurious segregation and piping.
E10 Test Method for Brinell Hardness of Metallic Materials
6. Chemical Composition
3. Classification of Rails
6.1 HeatorCastAnalysis—Ananalysisforeachheatorcast
3.1 No. 1 Rails—Rails that are free of injurious imperfec-
of steel shall be made by the manufacturer to determine the
tions and flaws of all kinds.
percentage of the elements specified in Table 1. The analysis
shall be made from a test sample representing the heat or cast
3.2 No. 2 Rails—Rails that contain surface imperfections in
and shall conform to the requirements in Table 1.
suchnumberorofsuchcharacterthatshallnot,inthejudgment
of the inspector, render them unfit for recognized uses.
6.2 Upon request by the purchaser, similar samples shall be
provided to verify the heat or cast analysis as determined in
1 6.1.
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
6.3 Product Analysis—When ladle tests are not available,
A01.01 on Steel Rails and Accessories.
finished material representing the heat may be product tested.
Current edition approved March 1, 2014. Published March 2014. Originally
approved in 1912. Last previous edition approved in 2008 as A2 – 02 (2008). DOI: The product analysis allowance beyond the limits of the
10.1520/A0002-02R14.
specified ladle analysis shall be within the limits for product
Design details for carbon steel girder rails are indicated in the girder rail
analyses specified in Table 2.
catalogs of individual manufacturers.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
7. Hardness Properties
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
7.1 Test Specimens:
the ASTM website.
4 7.1.1 Three representative sections of rail from each heat
The last approved version of this historical standard is referenced on
www.astm.org. shall be selected as test specimens.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A2−02 (2014)
TABLE 1 Chemical Requirements, %
8.2 Weight—The weight of the rails per yard as calculated,
Class A Class B Class C shall be maintained as nearly as possible after conforming to
Carbon 0.60–0.75 0.70–0.85 0.75–0.90 the requirements specified in 8.1.
Manganese 0.60–0.90 0.60–0.90 0.60–0.90
8.3 Length:
Phosphorus, max 0.04 0.04 0.04
Silicon 0.10–0.40 0.10–0.40 0.10–0.40
8.3.1 Unless otherwise specified, the standard length of rail
shall be 39 ft (11.9 m) where measured at a temperature of
60°F (15°C).
TABLE 2 Product Analysis—Allowance Beyond Limits of
8.3.2 All standard 39-ft lengths may be specified; or
Specified Chemical Analysis
8.3.3 Standard 39-ft lengths with up to 11 % of the entire
Allowance Under Minumum Allowance Over Maximum
order in lengths shorter than standard, varying by 1 ft (0.3 m)
Limit, % Limit, %
from 38 to 24 ft (11.6 to 7.3 m) may be specified; or
Carbon 0.04 0.04
8.3.4 Length variations other than those described in 8.3.3
Manganese 0.06 0.06
Phosphorus . . . 0.008
may be established by agreement between the purchaser and
A
Silicon 0.02 0.02
manufacturer.
A
Continuously cast allowances shall be 0.05 % over maximum for silicon. 7
8.3.5 A variation of ⁄16 in. (11 mm) from the specified
length of individual rails will be permitted.
8.4 End Finish:
7.1.2 Excess scale and decarburization shall be removed
8.4.1 Rails shall be milled, abrasive wheel cut, or ground to
from the test area of the head or web of the selected specimens.
length, with a variation in end squareness of not more than ⁄32
7.2 Procedure:
in. (0.8 mm) allowed.
7.2.1 The test shall be conducted in accordance with Test
8.4.2 Harmful burrs on the ends shall be removed.
Method E10.
8.5 Drilling:
7.3 Requirements:
8.5.1 Circular holes for joint bar bolts, bonds, and tie rods
7.3.1 Class A rail shall have a Brinell hardness of 248 to
shall be drilled to conform to the drawings and dimensions
293, and Classes B and C shall have hardnesses of 269 to 321.
furnished by the purchaser and within the following permis-
7.4 Retests—If the average depth of the impressions ob-
sible variations:
tained on the head of the three specimens from any heat fails
8.5.2 Thediameterofboltholesshallnotvarymorethan ⁄16
to conform to the requirements specified in 7.3, the manufac-
in. (1.6 mm) over and 0 in. under that specified. The diameter
turer may at his option retest the specimens, or each rail from
of bond holes shall not be over the size specified, but may be
that heat. Rails represented by retests which conform to the
⁄32 in. (0.8 mm) under. The diameter of the tie rod holes shall
requirements of 7.3 shall be accepted.
not be less than that specified but may be ⁄16 in. (1.6 mm) over.
8.5.3 The location of bolt and bond holes shall
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.