ASTM A108-99

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: A 108 – 99
Standard Specification for
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Steel Bars, Carbon, Cold-Finished, Standard Quality
This standard is issued under the fixed designation A 108; 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.
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1. Scope E 527 Practice for Numbering Metals and Alloys (UNS)
2.2 Other Documents:
1.1 This specification covers standard quality cold-finished
SAE J1086 Recommended Practice for Numbering Metals
carbon steel bars produced to chemical compositions. Standard
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and Alloys (UNS)
quality cold-finished bars are suitable for heat treatment, for
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SAE Handbook
machining into components, or for use in the as-finished
Federal Standard 66 C Steel, Chemical Composition and
condition as shafting, or in constructional applications, or for
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Hardenability
other similar purposes (Note 1). Grades of steel are identified
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AISI Steel Product Manual for Cold Finished Bars
by grade numbers or by chemical composition.
NOTE 1—A guide for the selection of steel bars is contained in Practice 3. Terminology
A 400.
3.1 Definition:
1.2 Material furnished under this specification shall con-
3.1.1 standard quality—cold-finished carbon steel bars pro-
form to the applicable requirements of the current edition of
duced from special quality hot-wrought carbon steel bars or
Specification A 29/A 29M.
rods of equivalent quality.
1.3 Some end uses may require material superior to standard
3.1.1.1 Discussion—Bars of standard quality are commonly
quality involving one or more of the available designations
produced in standard chemical grade compositions or to
shown under Supplementary Requirements. Supplementary
mechanical property specifications and are subject to product
requirements shall apply only when specified individually by
analysis tolerances.
the purchaser.
3.1.1.2 Discussion—The available sections and sizes are
covered by Specification A 29/A 29M. The bars are normally
2. Referenced Documents
produced in cut lengths but some small sizes are supplied in
2.1 ASTM Standards:
coils. The producer should be consulted regarding sections and
A 29/A 29M Specification for Steel Bars, Carbon and
sizes available in coils.
Alloy, Hot-Wrought and Cold-Finished, General Require-
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4. Ordering Information
ments for
A 370 Test Methods and Definitions for Mechanical Testing
4.1 Orders for cold-finished bars to this specification should
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of Steel Products
include the following items to adequately describe the material:
A 400 Practice for Steel Bars, Selection Guide, Composi-
4.1.1 Name of material,
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tion, and Mechanical Properties
4.1.2 ASTM specification number and date of issue,
A 510 Specification for General Requirements for Wire
4.1.3 Chemical composition grade designation or limits,
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Rods and Coarse Round Wire, Carbon Steel
4.1.4 Silicon, if required,
A 576 Specification for Steel Bars, Carbon, Hot-Wrought,
4.1.5 Additional machinability-enhancing elements (see
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Special Quality
Footnote D to Table 1),
E 45 Test Methods for Determining the Inclusion Content
4.1.6 Condition,
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of Steel
4.1.7 Quality,
4.1.8 Shape (round, hex, square, etc.), size, and length,
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This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
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Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee Annual Book of ASTM Standards, Vol 01.01.
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A01.15 on Bars. Available from Society of Automotive Engineers, 400 Commonwealth Drive,
Current edition approved March 10, 1999. Published June 1999. Originally Warrendale, PA 15096.
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published as A 108–26 T. Last previous edition A 108–95. Available from the Standardization Documents Order Desk, Bldg. 4, Section D,
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Annual Book of ASTM Standards, Vol 01.05. 700 Robbins Ave., Philadelphia, PA 19111-5094 Attn: NPODS.
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Annual Book of ASTM Standards, Vol 01.03. Available from the American Iron and Steel Institute, 150 East 42nd St., New
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Annual Book of ASTM Standards, Vol 03.01. York, NY 10017.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
A 108–99
TABLE 1 Composition of Cold-Finished Carbon Steel Bars
NOTE 1—Grade designations and compositions correspond to the respective AISI designations and compositions.
A
UNS Designation Grade Designation Carbon, % Manganese, % Phosphorus, % Sulfur, %
B,C,D
Open-He
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