ASTM A49-95

Standard Specification for Heat-Treated Carbon Steel Joint Bars, Microalloyed Joint Bars, and Forged Carbon Steel Compromise Joint Bars

SCOPE
1.1 This specification covers heat-treated carbon steel joint bars, microalloyed joint bars, and forged compromise joint bars for general use in standard railroad track.  
1.2 The joint bars may be used for the production of insulated joints.  
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 09-Apr-2001
• ICS: 77.140.60 - Steel bars and rods
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.01 - Steel Rails and Accessories

Relations

• Replaced By: ASTM A49-01 - Standard Specification for Heat-Treated Carbon Steel Joint Bars, Microalloyed Joint Bars, and Forged Carbon Steel Compromise Joint Bars
• Effective Date: 10-Apr-2001

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A 49 – 95
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Heat-Treated Carbon Steel Joint Bars, Microalloyed Joint
1
Bars, and Forged Carbon Steel Compromise Joint Bars
This standard is issued under the fixed designation A 49; 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. A superscript
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. Consult the DoD Index of Specifications and
Standards for the specific year of issue which has been adopted by the Department of Defense.
1. Scope tion and weight of rails being joined,
3.1.3 Dimension—overall length,
1.1 This specification covers heat-treated carbon steel joint
3.1.4 Punching—type (elliptical, oval, round, or combina-
bars, microalloyed joint bars, and forged compromise joint bars
tions), size, number, location, spacing and elevation of
for general use in standard railroad track.
punched holes, with dimensional drawing if necessary,
1.2 The joint bars may be used for the production of
3.1.5 Head Easement—if required, and
insulated joints.
3.1.6 Certification (see 11.1).
1.3 The values stated in inch-pound units are to be regarded
as the standard. The values given in parentheses are for
4. Manufacture
information only.
4.1 The steel shall be made by one or more of the following
processes: open-hearth, basic-oxygen, or electric-furnace.
2. Referenced Documents
4.1.1 The steel may be cast by a continuous process, or in
2.1 ASTM Standards:
ingots.
A 29/A29M Specification for Steel Bars, Carbon and Alloy,
4.2 Heating and Quenching—Quenched carbon-steel joint
Hot-Wrought and Cold-Finished, General Requirements
2 bars and forged compromise joint bars shall be uniformly
for
heated for punching, slotting, shaping, and forging and subse-
A 370 Test Methods and Definitions for Mechanical Testing
quently quenched. Maximum depth of decarburized layer of
3
of Steel Products
4 forged bars shall not exceed 0.040 in.
2.2 American Railway Engineering Association Manual:
4.3 Microalloyed joint bars shall be produced from hot
Recommended Head Easement Joint Bars
rolled steel sections. Bars shall be sheared or sawed cold, and
2.3 Military Standards:
holes shall be drilled. No reheating and quenching is required.
5
MIL-STD-129 Marking for Shipment and Storage
MIL-STD-163 Steel Mill Products, Preparation for Ship-
5. Chemical Requirements
5
ment and Storage
5.1 The chemical composition of the quenched carbon-steel
2.4 Federal Standards:
joint bars and forged compromise joint bars determined as
Federal Standard No. 123
prescribed in 5.3 shall be within the limits shown in Table 1.
5
Marking for Shipments (Civil Agencies)
5.2 The chemical composition of the microalloyed joint bars
shall be agreed upon by the purchaser and the manufacturer.
3. Ordering Information
Microalloying shall be accomplished with columbium, vana-
3.1 Orders for joint bars under this specification shall
dium, and nitrogen, or combinations thereof.
include the following information as appropriate:
5.3 Heat or Cast Analysis—Separate analysis shall be made
3.1.1 Quantity—number of pairs of bars,
from test samples representing one of the first three and one of
3.1.2 Type—design or type bar along with section designa-
the last three ingots or continuously cast blooms preferably
taken during the pouring of the heat. Determinations may be
1
made chemically or spectrographically. Any portion of the heat
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
Stainless Steel and Related Alloys, and is the direct responsibility of Subcommittee
meeting the chemical analysis requirements of Table 1 may be
A01.01 on Steel Rails and Accessories.
applied. The first heat analysis shall be recorded as the official
Current edition approved July 15, 1995. Published September 1995. Originally
heat analysis, but the purchaser shall have access to all ladle
published as A 49 – 15. Last previous edition A 49 – 87.
2
analyses. Additionally, any material meeting the product analy-
Annual Book of ASTM Standards, Vol 01.05.
3
Annual Book of ASTM Standards, Vol 01.03.
sis limits shown in Table 2 may be applied after testing such
4
Available from American Railway Engineering Assn., 50 F St., NW, Washing-
material in accordance with Specification A 29/A 29M.
ton, DC 20036.
5 5.4 Product Analysis—When ladle tests are not available,
Available from Naval Publications and Forms Center, 5801 Tabor Ave.,
Philadelphia, PA 19120. finished material representing the
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